专题01 时间、条件、原因、让步状语从句（期末复习讲义）八年级英语上学期新教材沪教版五四制

该初中英语期末复习讲义通过表格系统构建时间、条件、原因、让步状语从句的知识体系，每个语法点均以“核心引导词-用法拆解-例句（基础+拓展）-易错点提醒”框架呈现，清晰梳理时态匹配、引导词辨析等重难点，揭示不同从句间的内在逻辑联系。 讲义亮点在于分层练习设计与核心素养导向，即时检测结合基础题、提升题、拓展题覆盖不同难度，情境化例句（如生活场景对话）强化语言运用能力，引导词辨析（如when/while/as区别）培养思维品质，助力教师实施分层教学，支持学生自主复习与能力提升。

专题01 时间、条件、原因、让步状语从句（期末复习讲义） 单元 语法点 常考题型 命题趋势 Units 1-2 Units 4-6 时间、条件、原因、让步状语从句 单项选择 语法选择 语法填空等 1.核心素养导向：聚焦英语核心素养考查，注重语言运用能力与思维能力的结合。 2.情境化凸显：依托生活、学校、社会等真实场景，实现语法考查与实际应用的深度融合。 3.文化价值渗透：选取富含文化内涵、传递正向思想价值的语篇素材，强化文化传承与价值引领。 4.实用性强化：语法考点紧密关联语言表达实际需求，侧重在语境中灵活运用语法知识解决问题。 知识点01 时间状语从句 核心引导词 用法拆解（含易混点） 例句（基础+拓展） 中考易错点提醒 when（当… 时） 1. 接延续性动词（be doing）或短暂性动词（do）；2. 主句过去进行时，从句一般过去时（表 “背景中突发动作”） 基础：When I arrived, they were talking.（我到的时候他们在聊天）拓展：I was about to leave when the phone rang.（我正要走，电话响了） 勿与 while 混淆：when 可接短暂性动词，while 不可 while（当… 时） 1. 接延续性动词（必须用进行时 be doing）；2. 表 “对比”（一边… 一边…） 基础：While she was cooking, I was cleaning.（她做饭时，我在打扫）Some people are working, while others are resting.（有人在工作，有人在休息） 从句不可用短暂性动词（如：While he came 错误） as（当… 时 / 随着） 1. 强调 “同时发生”，动作持续时间短；2. 表 “随着”，引导渐变过程 基础：As we walked, we sang.（我们边走边唱）：As time goes by, we grow up.（随着时间流逝，我们长大了） 与 when/while 区别：as 更侧重 “伴随”，动作同步性强 until（直到…） 1. 肯定句：主句用延续性动词（stay/wait 等）；2. 否定句（not…until）：主句用短暂性动词，表 “直到… 才” 基础：He waited until she came back.（他一直等到她回来）拓展：I didn’t go to bed until I finished my homework.（我直到做完作业才睡觉） 否定句中不可漏 not：until 单独用表 “一直到”，not…until 表 “才” as soon as（一… 就） 1. 时态遵循 “主将从现”；2. 从句不可用将来时（will/shall） 基础：As soon as he comes, I’ll call you.（他一来我就给你打电话）拓展：As soon as we got there, it started raining.（我们一到那儿就下雨了） 易错句型：As soon as will he come 错误（从句用一般现在时） 时间状语从句核心考点拆解 1.时态匹配：主句过去时→从句过去时（when/while/as）；主句将来时→从句一般现在时（as soon as/until）； 2.引导词辨析：3 个 “当… 时” 的核心区别 ——when “万能”（延续 / 短暂）、while“延续 + 对比”、as“同步 + 伴随”； 3.高频句型：not…until（直到… 才）、be about to do…when…（正要做… 突然…），中考作文常考。 【即时检测】 1．Sam will call me as soon as he ________ home. A．gets B．has got C．got D．will get 2．If you miss this chance, it must be years ________ you get another one. A．since B．after C．until D．before 知识点02 条件状语从句 核心引导词 用法拆解（含逻辑关系） 例句（基础+拓展） 中考易错点提醒 if（如果） 1. 时态：主将从现（主句 will/can/must，从句一般现在时）；2. 表 “真实条件”（可能发生） 基础：If it doesn’t rain, we’ll go hiking.（如果不下雨，我们就去远足）：If you try your best, you can succeed.（如果你尽全力，就能成功） 从句不可用将来时：If it will rain 错误 unless（除非） 1. 同义于 “if not”（=if…not）；2. 否定含义，主句常用否定式或肯定式表 “否则” 基础：Unless you work hard, you won’t pass.（除非你努力，否则过不了）拓展：I’ll go unless you ask me not to.（除非你不让我去，否则我会去） 易错转换：Unless he helps me = If he doesn’t help me as long as（只要） 1. 表 “充分条件”（=on condition that）；2. 语气比 if 更强，强调 “前提” 基础：As long as you keep practicing, your English will improve.（只要坚持练习，英语就会进步）拓展：You can borrow the book as long as you return it on time.（只要按时还，你可以借这本书） 与 if 区别：as long as 侧重 “条件的唯一性”，if 无此含义 条件状语从句核心考点拆解 1.时态铁律：“主将从现” 是中考必考点，无论主句是 will（将来）、can（能力）还是 must（必须），从句一律用一般现在时； 2.连词转换：unless 和 if not 的互换（注意否定词位置），如 “Unless it snows”=“If it doesn’t snow”； 3.语境应用：作文中用 as long as 替代 if，可提升句式丰富度（如结尾句：As long as we stick to it, we can make it.）。 【即时检测】 1．If it ________ tomorrow, we will go hiking. A．doesn’t rain B．didn’t rain C．won’t rain D．isn’t raining 2．We’ll have to stay at home if it ________ heavily. A．snowed B．snows C．is snowing D．will snow 知识点03 原因状语从句 核心引导词 用法拆解（语气+场景） 例句（基础+拓展） 中考易错点提醒 because（因为） 1. 语气最强，表 “直接原因”；2. 回答 why 提问（必须用 because 回答）；3. 可位于句首或句末 基础：He cried because he lost his dog.（他哭是因为丢了狗）拓展：Because he was ill, he didn’t attend the meeting.（因为生病，他没参加会议） 不可与 so 连用：Because he was tired, so he slept 错误（去掉 so） since（既然） 1. 语气较弱，表 “已知原因”（双方都清楚的理由）；2. 常位于句首，表 “既然… 就…” 基础：Since you’re free, help me with this.（既然你有空，帮我一下）拓展：Since everyone agrees, we can start now.（既然大家都同意，我们现在就开始） 与 because 区别：since 不回答 why，仅陈述 “显而易见的原因” as（由于） 1. 语气最弱，表 “附带原因”（原因不重要，重点在主句）；2. 常位于句首，句式简洁 基础：As it was late, we went home.（由于天晚了，我们就回家了）拓展：As he is busy, he can’t come.（由于他忙，来不了） 与 since 区别：as 的原因更次要，since 的原因更侧重 “前提” now that（既然） 1. 同义于 since，语气更口语化；2. 强调 “既然已经… 就…” 基础：Now that you know the truth, you can make a decision.（既然你知道真相了，就可以做决定了）拓展：Now that the rain has stopped, let’s go out.（既然雨停了，我们出去吧） 中考常考同义替换：now that = since 原因状语从句核心考点拆解 1.连词语气排序：because（最强，直接原因）> since（中等，已知原因）> as（最弱，附带原因）； 2.禁忌规则：中文 “因为… 所以…”，英文只能用一个连词（because/so 二选一）； 3.答题技巧：看到 why 提问，直接选 because；看到 “显而易见的原因”（如 “既然你知道”），选 since/now that。 【即时检测】 1．The two companies decided to work together ________ they had common interest. A．because B．because of C．so that D．even though 2．David has painted his room blue _______ the colour brings peace to his mind and body. A．although B．because C．before D．if 知识点04 让步状语从句 核心引导词 用法拆解（含转折逻辑） 例句（基础+拓展） 中考易错点提醒 although/though（虽然） 1. 表 “转折让步”（尽管… 但是…）；2. 可位于句首或句末；3. though 可用于句末（=however） 基础：Although it was cold, he went out without a coat.（尽管天冷，他还是没穿外套就出去了）拓展：He is young, though he is very experienced.（他很年轻，但经验丰富） 不可与 but 连用：Although he is rich, but he is not happy 错误（去掉 but） Even if/even though（即使） 1. 表 “假设让步”（退一步说，即使… 也…）；2. 从句可表虚拟（与事实相反） 基础：Even if it rains tomorrow, we’ll still have the picnic.（即使明天下雨，我们还是要去野餐）拓展：Even though he knew it, he didn’t tell me.（尽管他知道，却没告诉我） 与 although 区别：even if 侧重 “假设”（可能不发生），although 侧重 “事实”（已发生 / 确定） no matter what（无论什么） 1. 同义于 whatever；2. 表 “无条件让步”（无论… 都…）；3. 后接陈述语序 基础：No matter what you do, I’ll support you.（无论你做什么，我都支持你）拓展：Whatever happens, don’t give up.（无论发生什么，都不要放弃） 语序易错：No matter what will happen 错误（从句用一般现在时） no matter how（无论怎样） 1. 同义于 however；2. 后接形容词 / 副词 + 陈述语序（how+adj./adv.+ 主语 + 谓语） 基础：No matter how hard it is, I’ll try my best.（无论多难，我都会尽全力）拓展：However late he is, his mother always waits for him.（无论他多晚，妈妈都等他） 语序易错：No matter how hard is it 错误（正确：how hard it is） 让步状语从句核心考点拆解 1.连词禁忌：although/though 不能与 but 连用，可与 still/yet 连用（如：Although it’s hard, still we can try）； 2.引导词辨析：although（事实让步）vs even if（假设让步），如 “Although he is poor”（事实：他真的穷）vs “Even if he is poor”（假设：就算他穷）； 3.中考热点：no matter what/how 与 whatever/however 的互换（作文中用后者更简洁，如 “Whatever you choose, stick to it”）。 【即时检测】 1．— Did she come to school yesterday? —Yes, she did, ________ she was not feeling very well. A．if B．though C．because D．unless 2．—This restaurant is always crowded, _________the food is kind of expensive. —In that case, the food must be delicious. A．but B．because C．so D．though 基础题（测试时间：10分钟） 1．I waited for Alan in the hotel. However, he didn’t come ________ I left there. A．if B．of C．but D．until 2．If it __________ tomorrow, we __________ a picnic. A．doesn’t rain; will have B．won’t rain; have C．doesn’t rain; have D．won’t rain; will have 3．I like learning English a lot ________ it seems difficult sometimes. A．if B．though C．because D．so 4．Roman numerals are not as common as Arabic numerals, ________. A．so people use them for a long time B．so you can see them everywhere C．because they are so difficult to use D．because they are too easy to use 5．________ it rained hard, ________ I stayed at home. A．Because; / B．Because; so C．Though; but D．Though; / 6．I went to the science museum by myself _________ none of my friends were free last week. A．because B．so that C．even if D．though 7．Norman Bethune is still remembered in both China and Canada today ________ his inventions saved many lives during the war. A．though B．because C．and D．so 8．Many wild animals don’t have a safe place to live, ________ villages and farms are growing bigger and taking away their land. A．because B．until C．although 9．—Did your school team win the basketball game last week? —Not really. ________ we tried our best, we lost it in the end. A．Because B．If C．Unless D．Though 10．—The TV play Joy of Life 2 is wonderful. —Yes. I want to enjoy it again ________ I have watched it once. A．until B．because C．although D．and 11．________ Mark has to leave school to work in a factory for his family, he always wears a smile on his face. A．Although B．However C．Unless D．If 12．________ he was tired, he kept on training and never stopped. A．Because B．So C．Though D．But 13．________ you listen to the teachers carefully in class, you will pass (通过) the exam. A．If B．Unless C．Although 14．—Let’s go for a picnic in the forest park tomorrow. —OK, ________ it rains heavily. A．if B．unless C．until D．when 15．—It's hard for Tina to lose weight. —________ she eats less and exercises more every day. A．Unless B．If C．After D．Until 16．We ________ go hiking if it ________ rain tomorrow. A．don’t; won’t B．won’t; will C．will; doesn’t 17．—It’s too late. I have to go. —Oh, it’s raining outside. I’m afraid you can’t leave ________ it stops. A．until B．since C．while D．after 18．— Hurry up! The bus is coming. — Wait a minute. Don’t cross the street ________ the traffic lights are green. A．because B．until C．although D．as 19．I knew nothing about it ________ you told me. A．until B．after C．when 20．—Tom, did you stay up late watching the basketball game? —Yeah. I didn’t go to sleep ____________ my father came back home at midnight. A．since B．until C．unless D．after 提升题（测试时间：10分钟） 1．DeepSeek-R1 is good at finishing difficult tasks because it has strong skills. The underlined word “because” is used to ________. A．show cause and effect B．give an example C．show time D．add more information 2．—Why was he late? —He was late ________ he was ill, not ________ the bad weather. A．because; because of B．because of; because C．because; so 3．I will warn my brother ________ the hot stove ________ he could get burned. A．to not touch; because B．touching; because of C．not to touch; because D．not touching; because of 4．Jenny didn’t go to school today ________ she broke her left leg in the P.E. class. A．because B．although C．if D．but 5．He had trouble ________ after the accident ________ he was very afraid. A．to think clearly; because B．thinking clear; because of C．thinking clearly; because 6．—Do you know the player? He did a good job in 2024 Paris Olympic Games. —Yes, he is Pan Zhanle. ________ he is a talented swimmer, he still practices hard every day. A．Although B．Because C．However D．As long as 7．—Will you still play football tomorrow? —Yes, we will keep it ________ it’s cloudy and windy. A．as long as B．even if C．as soon as D．so that 8．—________ we are busy, ________ we can’t forget to show love to our parents. —That’s right. Parents are the most important people in our life. A．Although, but B．Because, although C．So, although D．Although, / 9．—Will you stick to playing football tomorrow? —Yes, we will keep it ________ it’s cloudy and windy. A．as long as B．even if C．as soon as D．so that 10．E-payment makes our lives ________. We can buy things ________ we don’t take any cash. A．easily; even if B．easily; so that C．easy; in order to D．easy; even if 11．We don’t know if it ________ tomorrow. If it ________, we will go climbing. A．will rain; rains B．doesn’t rain; rains C．will rain; doesn’t rain 12．Getting enough sleep is a must for us teenagers. ________ you make it a habit, you will feel more energetic. A．Because B．Once C．Though D．While 13．“You’ll like her once you get to know her.” Which “once” below has the same meaning as the “once” here? A．I visit my grandparents in the country once a week. B．She once watched Nantong Team play in the JSCL. C．It isn’t too difficult once you find the correct method. D．Once he lived in America, but now he lives in China. 14．Your parents will be upset ________ you take the work seriously. A．but B．because C．unless D．until 15．If you ________ about your problems with someone, you ________ halfway to solving them. A．don’t talk; are B．won’t talk; are C．talk; will be 16．We need to take action to save every drop of water ________ it is too late. A．before B．as C．after D．until 17．—________ you told me, I had no idea about the fact. —Well, the earlier you know the truth, the better it will be for you. A．Whatever B．If C．Until D．After 18．Many students didn’t realize the importance of study _________ they left school. A．if B．until C．though D．because 19．While he ________ the piano, his mother came back. A．plays B．played C．is playing D．was playing 20．—Jack, remember ________ off the lights when ________ home. —OK. I won’t forget. A．turning; leaving B．to turn; leaving C．to turn; leave D．turning; left 拓展题（测试时间：15分钟） 1．—When shall we go back to Wuhan? I’m really not used to the food here. —Oh, we will not leave until we ________ the problems here. A．will solve B．solve C．are solving D．solved 2．He must do his homework ________ he wakes up. He feels very tired. A．before B．as soon as C．even though 3．Which “while” of the following shares similar (相似的) usage to the one in the sentence “Many birds live in Zhalong all year round, while some go there only for a short stay.”? A．Tom is very confident while Katy’s shy and quiet. B．We chatted with each other in the park for quite a while. C．Can you help me look after my pet dog while I’m away? D．While I was waiting for the bus, a stranger came towards me. 4．—Time wait for no man. —But people won’t realize the importance of time ________ it’s gone. A．until B．although C．so that 5．Michael will play computer games ________ his mom goes out for work. A．unless B．as soon as C．because 6．—How long did your English teacher teach at this school? —Ah, she ________ at this school since she ________ Wuhan. A．has taught; has come to B．taught; came to C．has been teaching; came to D．has taught; has been to 7．________ the signal (信号) gets stronger, the multimedia device ________ the Wi-Fi smoothly. A．With; will be connected to B．As; will be connected to C．When; was connected to D．As; is connected to 8．There ________ a sports meet next week if it ________. A．is going to have; doesn’t rain B．is going to be; doesn’t rain C．is going to be; won’t rain D．is going to have; won’t rain 9．—Do you know if he ________ the job offer? —Unless he ________ a higher salary, I am sure he won’t. A．will receive; accepts B．will accept; receives C．receives; will accept D．accepts; receives 10．—If Kate _________ back, tell her to come to my office, please. —OK, I ________. A．comes; will B．comes; do C．will come; will D．will come; do 11．—Can I borrow your dictionary? —Sure, but only ________ you promise to return it tomorrow. A．though B．unless C．because D．if 12．—What’s your plan for tomorrow? —I don’t know if it ________ tomorrow. If it ________, I’ll stay at home. A．will rain; rains B．will rain; will rain C．rains; will rain D．rains; rains 13．________ many people like to eat junk food, they should really eat more fruit and vegetables ________ they can be healthy. A．Until; because B．Although; / C．Although; so that D．So that; although 14．When doing some reading, many students find it hard to understand some sentences ________ there are few new words in them. A．because B．if C．but D．though 15．No matter you give up, never give up hope. A．what B．where C．who D．when 16．You should try to keep calm __________ happens to you. A．wherever B．no matter which C．however D．no matter what 17．________ the News is boring, I still watch it every day because I hope to find out what’s going on around the word. A．However B．Although C．Because 18．________ we have a few minutes to wait for the train, let’s have a cup of coffee. A．Although B．Until C．Since D．Unless 19．—The local food looks a bit strange. —Well, ________ we are here, why not give it a try? A．though B．unless C．since D．because 20．I wanted to buy that kind of dress, because I ________ the cloth ________ well. A．was told; washed B．have told; washes C．had been told; washes D．was told; is washed 21．________ you know it is raining outside, you should take an umbrella with you if you go out. A．Until B．Though C．Since D．Before 22．Although many people view conflict as bad, conflict is sometimes useful ________ it forces people to test the relative merits of their attitudes and behavior. A．by which B．to which C．in that D．so that 3 / 3 学科网（北京）股份有限公司 $ 专题01 时间、条件、原因、让步状语从句（期末复习讲义） 单元 语法点 常考题型 命题趋势 Units 1-2 Units 4-6 时间、条件、原因、让步状语从句 单项选择 语法选择 语法填空等 1.核心素养导向：聚焦英语核心素养考查，注重语言运用能力与思维能力的结合。 2.情境化凸显：依托生活、学校、社会等真实场景，实现语法考查与实际应用的深度融合。 3.文化价值渗透：选取富含文化内涵、传递正向思想价值的语篇素材，强化文化传承与价值引领。 4.实用性强化：语法考点紧密关联语言表达实际需求，侧重在语境中灵活运用语法知识解决问题。 知识点01 时间状语从句 核心引导词 用法拆解（含易混点） 例句（基础+拓展） 中考易错点提醒 when（当… 时） 1. 接延续性动词（be doing）或短暂性动词（do）；2. 主句过去进行时，从句一般过去时（表 “背景中突发动作”） 基础：When I arrived, they were talking.（我到的时候他们在聊天）拓展：I was about to leave when the phone rang.（我正要走，电话响了） 勿与 while 混淆：when 可接短暂性动词，while 不可 while（当… 时） 1. 接延续性动词（必须用进行时 be doing）；2. 表 “对比”（一边… 一边…） 基础：While she was cooking, I was cleaning.（她做饭时，我在打扫）Some people are working, while others are resting.（有人在工作，有人在休息） 从句不可用短暂性动词（如：While he came 错误） as（当… 时 / 随着） 1. 强调 “同时发生”，动作持续时间短；2. 表 “随着”，引导渐变过程 基础：As we walked, we sang.（我们边走边唱）：As time goes by, we grow up.（随着时间流逝，我们长大了） 与 when/while 区别：as 更侧重 “伴随”，动作同步性强 until（直到…） 1. 肯定句：主句用延续性动词（stay/wait 等）；2. 否定句（not…until）：主句用短暂性动词，表 “直到… 才” 基础：He waited until she came back.（他一直等到她回来）拓展：I didn’t go to bed until I finished my homework.（我直到做完作业才睡觉） 否定句中不可漏 not：until 单独用表 “一直到”，not…until 表 “才” as soon as（一… 就） 1. 时态遵循 “主将从现”；2. 从句不可用将来时（will/shall） 基础：As soon as he comes, I’ll call you.（他一来我就给你打电话）拓展：As soon as we got there, it started raining.（我们一到那儿就下雨了） 易错句型：As soon as will he come 错误（从句用一般现在时） 时间状语从句核心考点拆解 1.时态匹配：主句过去时→从句过去时（when/while/as）；主句将来时→从句一般现在时（as soon as/until）； 2.引导词辨析：3 个 “当… 时” 的核心区别 ——when “万能”（延续 / 短暂）、while“延续 + 对比”、as“同步 + 伴随”； 3.高频句型：not…until（直到… 才）、be about to do…when…（正要做… 突然…），中考作文常考。 【即时检测】 1．Sam will call me as soon as he ________ home. A．gets B．has got C．got D．will get 【答案】A 【详解】句意：当Sam一回到家，他就会给我打电话。 考查时间状语从句的时态。as soon as“一……就……”引导时间状语从句时，遵循“主将从现”原则（主句用一般将来时，从句用一般现在时）。此句主句“Sam will call me”是一般将来时，所以从句要用一般现在时；主语“he”是第三人称单数，谓语动词用第三人称单数形式“gets”。故选A。 2．If you miss this chance, it must be years ________ you get another one. A．since B．after C．until D．before 【答案】D 【详解】句意：如果错过了这次机会，一定要过好几年才能再得到一次。 考查连词辨析。since自从；after在……之后；until直到；before在……之前。根据“it must be years ... you get another one.”可知，此处表示再得到这样的机会之前需要好几年时间，句型为it be+时间段+before引导的时间状语从句。故选D。 知识点02 条件状语从句 核心引导词 用法拆解（含逻辑关系） 例句（基础+拓展） 中考易错点提醒 if（如果） 1. 时态：主将从现（主句 will/can/must，从句一般现在时）；2. 表 “真实条件”（可能发生） 基础：If it doesn’t rain, we’ll go hiking.（如果不下雨，我们就去远足）：If you try your best, you can succeed.（如果你尽全力，就能成功） 从句不可用将来时：If it will rain 错误 unless（除非） 1. 同义于 “if not”（=if…not）；2. 否定含义，主句常用否定式或肯定式表 “否则” 基础：Unless you work hard, you won’t pass.（除非你努力，否则过不了）拓展：I’ll go unless you ask me not to.（除非你不让我去，否则我会去） 易错转换：Unless he helps me = If he doesn’t help me as long as（只要） 1. 表 “充分条件”（=on condition that）；2. 语气比 if 更强，强调 “前提” 基础：As long as you keep practicing, your English will improve.（只要坚持练习，英语就会进步）拓展：You can borrow the book as long as you return it on time.（只要按时还，你可以借这本书） 与 if 区别：as long as 侧重 “条件的唯一性”，if 无此含义 条件状语从句核心考点拆解 1.时态铁律：“主将从现” 是中考必考点，无论主句是 will（将来）、can（能力）还是 must（必须），从句一律用一般现在时； 2.连词转换：unless 和 if not 的互换（注意否定词位置），如 “Unless it snows”=“If it doesn’t snow”； 3.语境应用：作文中用 as long as 替代 if，可提升句式丰富度（如结尾句：As long as we stick to it, we can make it.）。 【即时检测】 1．If it ________ tomorrow, we will go hiking. A．doesn’t rain B．didn’t rain C．won’t rain D．isn’t raining 【答案】A 【详解】句意：如果明天不下雨，我们就去徒步旅行。 考查动词时态。分析句子结构可知，该句为if引导的条件状语从句，遵循“主将从现”原则，即主句用一般将来时，从句用一般现在时表将来。从句主语it为第三人称单数，rain为实义动词，变否定句需借助助动词does，后接动词原形rain，即doesn’t rain。故选A。 2．We’ll have to stay at home if it ________ heavily. A．snowed B．snows C．is snowing D．will snow 【答案】B 【详解】句意：如果下大雪，我们将不得不待在家里。 考查if条件句的时态。在含有if引导的条件状语从句的主从复合句中，如果主句用一般将来时，从句应用一般现在时来表示将来的动作。本句主句“We’ll have to stay at home”为一般将来时，因此if从句应用一般现在时。所以用snows。故选B。 知识点03 原因状语从句 核心引导词 用法拆解（语气+场景） 例句（基础+拓展） 中考易错点提醒 because（因为） 1. 语气最强，表 “直接原因”；2. 回答 why 提问（必须用 because 回答）；3. 可位于句首或句末 基础：He cried because he lost his dog.（他哭是因为丢了狗）拓展：Because he was ill, he didn’t attend the meeting.（因为生病，他没参加会议） 不可与 so 连用：Because he was tired, so he slept 错误（去掉 so） since（既然） 1. 语气较弱，表 “已知原因”（双方都清楚的理由）；2. 常位于句首，表 “既然… 就…” 基础：Since you’re free, help me with this.（既然你有空，帮我一下）拓展：Since everyone agrees, we can start now.（既然大家都同意，我们现在就开始） 与 because 区别：since 不回答 why，仅陈述 “显而易见的原因” as（由于） 1. 语气最弱，表 “附带原因”（原因不重要，重点在主句）；2. 常位于句首，句式简洁 基础：As it was late, we went home.（由于天晚了，我们就回家了）拓展：As he is busy, he can’t come.（由于他忙，来不了） 与 since 区别：as 的原因更次要，since 的原因更侧重 “前提” now that（既然） 1. 同义于 since，语气更口语化；2. 强调 “既然已经… 就…” 基础：Now that you know the truth, you can make a decision.（既然你知道真相了，就可以做决定了）拓展：Now that the rain has stopped, let’s go out.（既然雨停了，我们出去吧） 中考常考同义替换：now that = since 原因状语从句核心考点拆解 1.连词语气排序：because（最强，直接原因）> since（中等，已知原因）> as（最弱，附带原因）； 2.禁忌规则：中文 “因为… 所以…”，英文只能用一个连词（because/so 二选一）； 3.答题技巧：看到 why 提问，直接选 because；看到 “显而易见的原因”（如 “既然你知道”），选 since/now that。 【即时检测】 1．The two companies decided to work together ________ they had common interest. A．because B．because of C．so that D．even though 【答案】A 【详解】句意：这两家公司决定合作，因为他们有共同的利益。 考查连词辨析。because因为；because of因为；so that以便；even though即使。根据“The two companies decided to work together ... they had common interest.”可知，两家公司因为共同利益合作；且空格后“they had common interest”是一个完整的句子，表示原因，需用连词because引导原因状语从句；because of不能接句子。故选A。 2．David has painted his room blue _______ the colour brings peace to his mind and body. A．although B．because C．before D．if 【答案】B 【详解】句意：大卫已经把他的房间刷成蓝色的了，因为那个颜色给他的身心带来了平静。 考查从属连词辨析。although尽管，虽然；because因为；before在……之前；if如果。根据“the colour brings peace to his mind and body”可知，那个颜色让他的身心平静下来是他把房间刷成蓝色的原因，应用because来引导原因状语从句。故选B。 知识点04 让步状语从句 核心引导词 用法拆解（含转折逻辑） 例句（基础+拓展） 中考易错点提醒 although/though（虽然） 1. 表 “转折让步”（尽管… 但是…）；2. 可位于句首或句末；3. though 可用于句末（=however） 基础：Although it was cold, he went out without a coat.（尽管天冷，他还是没穿外套就出去了）拓展：He is young, though he is very experienced.（他很年轻，但经验丰富） 不可与 but 连用：Although he is rich, but he is not happy 错误（去掉 but） Even if/even though（即使） 1. 表 “假设让步”（退一步说，即使… 也…）；2. 从句可表虚拟（与事实相反） 基础：Even if it rains tomorrow, we’ll still have the picnic.（即使明天下雨，我们还是要去野餐）拓展：Even though he knew it, he didn’t tell me.（尽管他知道，却没告诉我） 与 although 区别：even if 侧重 “假设”（可能不发生），although 侧重 “事实”（已发生 / 确定） no matter what（无论什么） 1. 同义于 whatever；2. 表 “无条件让步”（无论… 都…）；3. 后接陈述语序 基础：No matter what you do, I’ll support you.（无论你做什么，我都支持你）拓展：Whatever happens, don’t give up.（无论发生什么，都不要放弃） 语序易错：No matter what will happen 错误（从句用一般现在时） no matter how（无论怎样） 1. 同义于 however；2. 后接形容词 / 副词 + 陈述语序（how+adj./adv.+ 主语 + 谓语） 基础：No matter how hard it is, I’ll try my best.（无论多难，我都会尽全力）拓展：However late he is, his mother always waits for him.（无论他多晚，妈妈都等他） 语序易错：No matter how hard is it 错误（正确：how hard it is） 让步状语从句核心考点拆解 1.连词禁忌：although/though 不能与 but 连用，可与 still/yet 连用（如：Although it’s hard, still we can try）； 2.引导词辨析：although（事实让步）vs even if（假设让步），如 “Although he is poor”（事实：他真的穷）vs “Even if he is poor”（假设：就算他穷）； 3.中考热点：no matter what/how 与 whatever/however 的互换（作文中用后者更简洁，如 “Whatever you choose, stick to it”）。 【即时检测】 1．— Did she come to school yesterday? —Yes, she did, ________ she was not feeling very well. A．if B．though C．because D．unless 【答案】B 【详解】句意：——她昨天来学校了吗？——是的，她来了，尽管她感觉不太舒服。 考查连词辨析。if如果；though尽管；because因为；unless除非。根据“Yes, she did”和“she was not feeling very well”可知，她来了，尽管她感觉不舒服，两者构成让步关系，因此用though引导让步状语从句。故选B。 2．—This restaurant is always crowded, _________the food is kind of expensive. —In that case, the food must be delicious. A．but B．because C．so D．though 【答案】D 【详解】句意：——这家餐厅总是很拥挤，虽然这里的食物有点贵。 ——那样的话，这里的食物肯定很美味。 考查连词辨析。but但是；because因为；so所以；though虽然。根据“This restaurant is always crowded, ... the food is kind of expensive.”可知，“餐厅拥挤”和“食物贵”是让步关系。故选D。 基础题（测试时间：10分钟） 1．I waited for Alan in the hotel. However, he didn’t come ________ I left there. A．if B．of C．but D．until 【答案】D 【详解】句意：我在酒店等Alan。然而直到我离开，他才来。 考查连词辨析。if如果、是否；of……的；but但是；until直到。根据“he didn’t come ... I left there.”可知，直到我离开，他才来。not...until表示“直到……才”，强调时间上的延续。故选D。 2．If it __________ tomorrow, we __________ a picnic. A．doesn’t rain; will have B．won’t rain; have C．doesn’t rain; have D．won’t rain; will have 【答案】A 【详解】句意：如果明天不下雨，我们将去野餐。 考查条件状语从句的时态。根据“If it ... tomorrow, we ... a picnic.”可知，句子为if 引导的条件状语从句，时态遵循“主将从现”原则：从句 (if 引导的部分) 用一般现在时，表示未来可能发生的条件，主语“it”为单数，应用助动词doesn’t+动词原形；主句用一般将来时 (will +动词原形)，表示条件满足后会发生的结果。故选A。 3．I like learning English a lot ________ it seems difficult sometimes. A．if B．though C．because D．so 【答案】B 【详解】句意：我非常喜欢学习英语，虽然它有时似乎很难。 考查连词辨析。if如果；though虽然；because因为；so所以。根据“I like learning English a lot…it seems difficult sometimes.”可知，前半句“喜欢学习英语”与后半句“似乎很难”存在转折关系。故选B。 4．Roman numerals are not as common as Arabic numerals, ________. A．so people use them for a long time B．so you can see them everywhere C．because they are so difficult to use D．because they are too easy to use 【答案】C 【详解】句意：罗马数字不像阿拉伯数字那样常见，因为它们很难使用。 考查原因状语从句。so people use them for a long time所以人们使用它们很长时间；so you can see them everywhere所以你到处都能看到它们；because they are so difficult to use因为它们很难使用；because they are too easy to use因为它们太容易使用。根据“Roman numerals are not as common as Arabic numerals”可知，主句指出罗马数字不常见，空处需解释原因，选项C表示“因为它们很难使用”符合常识和逻辑，故选C。 5．________ it rained hard, ________ I stayed at home. A．Because; / B．Because; so C．Though; but D．Though; / 【答案】A 【详解】句意：因为雨下得很大，所以我待在家里。 考查连词用法。because因为，表示原因；so所以，表示结果；though虽然，表示让步关系；but但是，表示转折关系。在英语中，because和so不能同时使用，though和but也不能同时使用，故排除选项B和C；分析题干可知，前后两个分句是因果关系，前一个分句说明了待在家里的原因，所以第一空应用Because，第二空不填。故选A。 6．I went to the science museum by myself _________ none of my friends were free last week. A．because B．so that C．even if D．though 【答案】A 【详解】句意：我上周独自去了科学博物馆，因为我的朋友们都没空。 考查连词辨析。because因为；so that以便；even if即使；though虽然。根据“none of my friends were free last week”可知，横线后的句子表示原因，解释为什么独自去科学博物馆，因此填表示原因的连词because。故选A。 7．Norman Bethune is still remembered in both China and Canada today ________ his inventions saved many lives during the war. A．though B．because C．and D．so 【答案】B 【详解】句意：诺尔曼·白求恩今天在中国和加拿大仍然被铭记，因为他的发明在战争期间拯救了许多生命。 考查连词辨析。though虽然；because因为；and和；so所以。分析题干可知，空格前后是因果关系，后句说明了白求恩被铭记的原因，因此空格处需用表示原因的连词。故选B。 8．Many wild animals don’t have a safe place to live, ________ villages and farms are growing bigger and taking away their land. A．because B．until C．although 【答案】A 【详解】句意：许多野生动物没有一个安全的地方居住，因为村庄和农场正在变得更大，并夺走它们的土地。 考查连词辨析。because因为； until直到；although 虽然。根据句意，前半句“Many wild animals don’t have a safe place to live”野生动物没有安全栖息地是结果，后半句“villages and farms are growing bigger and taking away their land.”村庄和农场扩张夺走土地是原因，需用表示因果关系的连词连接两句。故选A。 9．—Did your school team win the basketball game last week? —Not really. ________ we tried our best, we lost it in the end. A．Because B．If C．Unless D．Though 【答案】D 【详解】句意：——你们校队上周的篮球比赛赢了吗？——没有。尽管我们尽了最大努力，但最后还是输了。 考查连词辨析。Because因为；If如果；Unless除非；Though尽管。根据“we tried our best”和“we lost it in the end”可知，前后句之间存在让步关系，即尽管尽了最大努力，但还是输了，所以应该用Though来引导让步状语从句。故选D。 10．—The TV play Joy of Life 2 is wonderful. —Yes. I want to enjoy it again ________ I have watched it once. A．until B．because C．although D．and 【答案】C 【详解】句意：——电视剧《庆余年第二季》很精彩。——是的。虽然我已经看过一次，但我想再欣赏一遍。 考查连词辨析。until直到；because因为；although虽然；and和。根据“I want to enjoy it again…I have watched it once.”可知，此处表示让步关系，需用although引导让步状语从句。故选C。 11．________ Mark has to leave school to work in a factory for his family, he always wears a smile on his face. A．Although B．However C．Unless D．If 【答案】A 【详解】句意：尽管Mark不得不离开学校去工厂工作来养家糊口，但他总是面带微笑。 考查连词辨析。Although虽然；However然而；Unless除非；If如果。根据前句“Mark has to leave school to work in a factory for his family”表示负面情况，后句“he always wears a smile on his face”表示积极结果，需用Although引导让步状语从句，表示“尽管”。故选A。 12．________ he was tired, he kept on training and never stopped. A．Because B．So C．Though D．But 【答案】C 【详解】句意：虽然他很累，但他继续训练，从未停止。 考查连词辨析。Because因为；So所以；Though虽然；But但是。根据句意，前半句“he was tired”与后半句“he kept on training”之间存在让步关系，即“尽管累，还是坚持”，因此需用though引导让步状语从句。故选C。 13．________ you listen to the teachers carefully in class, you will pass (通过) the exam. A．If B．Unless C．Although 【答案】A 【详解】句意：如果你在课堂上认真听老师讲课，你就会通过考试。 考查连词辨析。If如果，引导条件状语从句；Unless除非，引导条件状语从句；Although虽然，引导让步状语从句。根据“you listen to the teachers carefully in class”和“you will pass the exam”的逻辑关系可知，前者是后者的肯定条件，应用If引导条件状语从句。故选A。 14．—Let’s go for a picnic in the forest park tomorrow. —OK, ________ it rains heavily. A．if B．unless C．until D．when 【答案】B 【详解】句意：——我们明天去森林公园野餐吧。——好的，除非下大雨。 考查连词辨析。if如果；unless除非；until直到；when当……时。根据对话，第一人提议野餐，第二人同意但附加条件，表示只有当“it rains heavily”时才不去，因此需用unless表达“除非”的转折含义。故选B。 15．—It's hard for Tina to lose weight. —________ she eats less and exercises more every day. A．Unless B．If C．After D．Until 【答案】A 【详解】句意：——蒂娜减肥很难。——除非她每天少吃多运动。 考查连词辨析。Unless除非；If如果；After在……之后；Until直到。根据“It’s hard for Tina to lose weight.”以及“she eats less and exercises more every day”可知，蒂娜减肥确实很难，后半句是条件状语从句，表示“除非”，所以用unless。故选A。 16．We ________ go hiking if it ________ rain tomorrow. A．don’t; won’t B．won’t; will C．will; doesn’t 【答案】C 【详解】句意：如果明天不下雨，我们将去远足。 考查条件句的时态搭配。根据“We ... go hiking if it ... rain tomorrow.”可知，在if引导的条件状语从句中，主句用一般将来时（will/won’t）表示动作结果，从句用一般现在时表示将来条件，it为第三人称单数，需用doesn’t。故选C。 17．—It’s too late. I have to go. —Oh, it’s raining outside. I’m afraid you can’t leave ________ it stops. A．until B．since C．while D．after 【答案】A 【详解】句意：——太晚了，我得走了。——哦，外面正在下雨。恐怕你要等到雨停了才能离开。 考查连词词义辨析。until直到……为止；since自从；while当……时；after在……之后。根据“it’s raining outside. I’m afraid you can’t leave...it stops.”可知，此处表达的是恐怕要等到雨停了才能离开，“直到……为止”对应的英文是until，“not...until...”表示“直到……才……”。故选A。 18．— Hurry up! The bus is coming. — Wait a minute. Don’t cross the street ________ the traffic lights are green. A．because B．until C．although D．as 【答案】B 【详解】句意：——快点！公交车来了。——等一下。交通灯变绿之前不要过马路。 考查连词词义辨析。because因为；until直到……为止；although尽管；as当……时。根据“Don’t cross the street... the traffic lights are green”可知，此处表达的是“直到交通灯变绿才能过马路”，“not...until...”表示“直到……才……”，符合语境。故选B。 19．I knew nothing about it ________ you told me. A．until B．after C．when 【答案】A 【详解】句意：我对此一无所知，直到你告诉我。 考查连词辨析。until直到；after在……之后；when当……时。根据“I knew nothing about it”可知，句子强调在“你告诉我”之前不知道，之后才知道，所以用until引导时间状语从句。故选A。 20．—Tom, did you stay up late watching the basketball game? —Yeah. I didn’t go to sleep ____________ my father came back home at midnight. A．since B．until C．unless D．after 【答案】B 【详解】句意：——汤姆，你熬夜看篮球赛了吗？——是的。直到半夜我父亲回家，我才睡觉。 考查连词辨析。since自从；until直到；unless除非；after在……以后。根据“I didn’t go to sleep…my father came back home at midnight.”可知，此处表示“直到某个时间点才发生某事”，需要填入一个表示“直到……才”的连词，“until”符合语境。故选B。 提升题（测试时间：10分钟） 1．DeepSeek-R1 is good at finishing difficult tasks because it has strong skills. The underlined word “because” is used to ________. A．show cause and effect B．give an example C．show time D．add more information 【答案】A 【详解】句意：DeepSeek-R1擅长完成困难任务，因为它有强大的技能。划线单词“because”是用来______。 考查连词功能。“because”是引导原因状语从句的连词，作用是表明因果关系；“give an example”是“举例”，常用“for example, such as”等 ；“show time”是“展示时间”，常用时间连词；“add more information”是“补充更多信息”，常用“and, moreover”等 。“because”体现“有强大技能（因）”导致“擅长完成困难任务（果）”，所以是展示因果，故选A。 2．—Why was he late? —He was late ________ he was ill, not ________ the bad weather. A．because; because of B．because of; because C．because; so 【答案】A 【详解】句意：——他为什么迟到？——他迟到是因为他病了，而不是因为天气不好。 考查连词和介词短语。because因为，后接句子；because of因为，介词短语，后跟名词或名词短语；so所以。结合语境可知，第一空后为句子，故应用because；第二空后是名词短语，应用because of表原因。故选A。 3．I will warn my brother ________ the hot stove ________ he could get burned. A．to not touch; because B．touching; because of C．not to touch; because D．not touching; because of 【答案】C 【详解】句意：我会警告我弟弟不要碰那个热炉子，因为他可能会被烫伤。 考查非谓语动词和连词辨析。第一空，warn sb (not) to do sth为固定结构，意为“警告某人（不要）做某事”，此处应用动词不定式，理解语境可知，此处表示“”警告我弟弟不要碰那个热炉子”，用否定形式。第二空，because引导原因状语从句；because of后接名词或名词短语，不能接句子。空格后“he could get burned”是一个完整的句子，应用because。故选C。 4．Jenny didn’t go to school today ________ she broke her left leg in the P.E. class. A．because B．although C．if D．but 【答案】A 【详解】句意：珍妮今天没去上学，因为她在体育课上摔断了左腿。 考查连词辨析。because因为；although虽然，尽管；if如果；but但是。根据“she broke her left leg in the P.E. class”可知，这是珍妮没去上学的原因，前后是因果关系，所以用because引导原因状语从句，故选A。 5．He had trouble ________ after the accident ________ he was very afraid. A．to think clearly; because B．thinking clear; because of C．thinking clearly; because 【答案】C 【详解】句意：事故后，他很难清晰地思考，因为他非常害怕。 考查非谓语动词、副词的用法和原因状语从句。because因为，后加句子；because of因为，后加名词、代词和动名词。have trouble doing sth.“做某事有困难”，修饰动词用副词clearly，第二个空后是句子，用because引导原因状语从句。故选C。 6．—Do you know the player? He did a good job in 2024 Paris Olympic Games. —Yes, he is Pan Zhanle. ________ he is a talented swimmer, he still practices hard every day. A．Although B．Because C．However D．As long as 【答案】A 【详解】句意：——你知道那个运动员吗？他在2024年巴黎奥运会上表现很好。——是的，他是潘展乐。尽管他是一个有天赋的游泳运动员，他仍然每天努力练习。 考查连词辨析。Although虽然；Because因为；However然而；As long as只要。根据“...he is a talented swimmer, he still practices hard every day.”可知，前后句表示让步关系。故选A。 7．—Will you still play football tomorrow? —Yes, we will keep it ________ it’s cloudy and windy. A．as long as B．even if C．as soon as D．so that 【答案】B 【详解】句意：——你们明天还会踢足球吗？——是的，即使多云又刮风，我们也会坚持踢。 考查连词短语。as long as只要，表条件；even if即使，表让步；as soon as一……就……，表时间；so that以便，表目的。根据“Yes, we will keep it”和“it’s cloudy and windy”可知，后者为不利条件，但动作仍持续，此处是让步关系，应用even if引导让步状语从句。故选B。 8．—________ we are busy, ________ we can’t forget to show love to our parents. —That’s right. Parents are the most important people in our life. A．Although, but B．Because, although C．So, although D．Although, / 【答案】D 【详解】句意：尽管我们很忙，我们不能忘记向父母表达爱意。 考查连词的用法。Although…but尽管……但是；Because…although因为……尽管；So…although所以……尽管；Although尽管。根据“...we are busy,...we can’t forget to show love to our parents.”可知，此处是让步状语从句，although/though引导让步状语从句时，主句前不能加but等连词，选项D“Although, /”符合语法规则和语义逻辑。故选D。 9．—Will you stick to playing football tomorrow? —Yes, we will keep it ________ it’s cloudy and windy. A．as long as B．even if C．as soon as D．so that 【答案】B 【详解】句意：——你们明天会坚持踢足球吗？——是的，即使天气多云且有风，我们也会继续踢。 考查连词辨析。as long as只要；even if即使；as soon as一……就……；so that以便，为了。根据语境可知，此处是在表达即使天气不好也会坚持踢足球，所以应该用even if。故选B。 10．E-payment makes our lives ________. We can buy things ________ we don’t take any cash. A．easily; even if B．easily; so that C．easy; in order to D．easy; even if 【答案】D 【详解】句意：电子支付使我们的生活轻松。我们可以在即使不携带任何现金的情况下买东西。 考查形容词用法和连词辨析。easily轻松地，副词；easy轻松的，形容词；even if即使；so that以便；in order to以便，后接动词原形；“make+宾语+形容词”结构中，形容词用作宾补说明宾语的状态，因此第一空选填“easy”；根据“We can buy things...we don’t take any cash.”可知，本句前后表达让步转折关系，“even if”引导让步状语从句，符合逻辑。故选D。 11．We don’t know if it ________ tomorrow. If it ________, we will go climbing. A．will rain; rains B．doesn’t rain; rains C．will rain; doesn’t rain 【答案】C 【详解】句意：我们不知道明天是否会下雨。如果不下雨，我们就去爬山。 考查宾语从句以及条件状语从句。前一句是if引导的是宾语从句，根据“tomorrow”可知，从句应用一般将来时“will do”；后一句是if引导的是条件状语从句，遵循“主将从现”原则，主句为一般将来时，从句应用一般现在时，结合语境，这里指不下雨就去爬山，所以从句用否定形式，主语为it，否定句借助助动词doesn’t，后跟动词原形，故选C。 12．Getting enough sleep is a must for us teenagers. ________ you make it a habit, you will feel more energetic. A．Because B．Once C．Though D．While 【答案】B 【详解】句意：获取足够的睡眠对我们青少年来说是必须的。一旦你让它成为习惯，你会感到更有活力。 考查连词辨析。Because因为，表示原因；Once一旦，表示条件；Though虽然，表示让步；While当……时或虽然，表示时间或对比。根据“Getting enough sleep is a must for us teenagers…you make it a habit, you will feel more energetic.”可知，获取足够的睡眠对我们青少年来说是必须的。一旦你让它成为习惯，你会感到更有活力。前后句是条件关系，表示“如果……就……”或“一旦……就……”，故选B。 13．“You’ll like her once you get to know her.” Which “once” below has the same meaning as the “once” here? A．I visit my grandparents in the country once a week. B．She once watched Nantong Team play in the JSCL. C．It isn’t too difficult once you find the correct method. D．Once he lived in America, but now he lives in China. 【答案】C 【详解】句意：“一旦你了解她，你就会喜欢她。”下列哪个“once”与此处的“once”意思相同？ 考查“once”的词义辨析。I visit my grandparents in the country once a week我每周去乡下看望祖父母一次；She once watched Nantong Team play in the JSCL她曾经看过南通队参加江苏省城市足球联赛；It isn’t too difficult once you find the correct method一旦你找到正确的方法，就不难了；Once he lived in America, but now he lives in China他曾经住在美国，但现在住在中国。题干中的“once”意为“一旦”，作连词，引导条件状语从句。C选项中的“once”也意为“一旦”，也是引导条件状语从句，与题干相同。故选C。 14．Your parents will be upset ________ you take the work seriously. A．but B．because C．unless D．until 【答案】C 【详解】句意：你的父母会不安，除非你认真对待工作。 考查连词辨析。but但是；because因为；unless除非；until直到。根据“Your parents will be upset”和“you take the work seriously”可知，后半句是前半句的否定条件，表示父母不安的条件是“你不认真对待工作”，所以用unless表示“除非”，引导条件状语从句。故选C。 15．If you ________ about your problems with someone, you ________ halfway to solving them. A．don’t talk; are B．won’t talk; are C．talk; will be 【答案】C 【详解】句意：如果你和某人谈论你的问题，你就解决了一半的问题。 考查条件句的时态。根据条件句的规则，if引导的条件状语从句中，要遵循主将从现的原则，从句应使用一般现在时，主句使用一般将来时（will + 动词原形）表示结果。根据语境可知，此处指谈论问题有助于解决，第一空应为肯定句，第二空用一般将来时。故选C。 16．We need to take action to save every drop of water ________ it is too late. A．before B．as C．after D．until 【答案】A 【详解】句意：我们需要在为时已晚之前采取行动节省每一滴水。 考查连词词义辨析。before在……之前，强调时间先后；as当……时，因为，引导时间状语从句或原因状语从句；after在……之后，强调时间先后；until直到，引导时间状语从句。按常理，我们应该在为时已晚之前采取行动节省每一滴水。故选A。 17．—________ you told me, I had no idea about the fact. —Well, the earlier you know the truth, the better it will be for you. A．Whatever B．If C．Until D．After 【答案】C 【详解】句意：——直到你告诉我，我才知道这个事实。——嗯，你越早知道真相，对你越好。 考查连词辨析。Whatever无论什么；If如果；Until直到；After在……之后。根据“…you told me, I had no idea about the fact.”以及选项可，此处指“直到你告诉我”，应用Until引导时间状语从句。故选C。 18．Many students didn’t realize the importance of study _________ they left school. A．if B．until C．though D．because 【答案】B 【详解】句意：许多学生直到离开学校才意识到学习的重要性。 考查连词辨析。if如果；until直到；though虽然；because因为。根据“Many students didn’t realize the importance of study... they left school”可知，此处指直到离开学校才意识到，句中didn’t realize为否定结构，与until构成not...until...固定搭配，表示“直到……才……”。故选B。 19．While he ________ the piano, his mother came back. A．plays B．played C．is playing D．was playing 【答案】D 【详解】句意：他正在弹钢琴时，他的妈妈回来了。 考查谓语动词时态。句子是while引导的时间状语从句，主句时态为一般过去时，从句时态需用过去进行时，结构为was+现在分词。故选D。 20．—Jack, remember ________ off the lights when ________ home. —OK. I won’t forget. A．turning; leaving B．to turn; leaving C．to turn; leave D．turning; left 【答案】B 【详解】句意：——杰克，记得离开家时关灯。——好的，我不会忘记的。 考查非谓语动词及状语从句的省略。remember to do sth.记得要做某事（未做）；remember doing sth.记得做过某事（已做）。根据句意，是提醒关灯，动作尚未发生，应用to turn。when引导时间状语从句，当从句主语与主句主语一致且谓语包含be动词时，可省略主语和be动词，此处完整形式为when you are leaving home，省略后为when leaving home。故选B。 拓展题（测试时间：15分钟） 1．—When shall we go back to Wuhan? I’m really not used to the food here. —Oh, we will not leave until we ________ the problems here. A．will solve B．solve C．are solving D．solved 【答案】B 【详解】句意：——我们什么时候回武汉？我真的不习惯这里的食物。——直到我们解决问题我们才离开。 考查动词形式。until引导的是时间状语从句，主句用一般将来时，从句用一般现在时表将来。故选B。 2．He must do his homework ________ he wakes up. He feels very tired. A．before B．as soon as C．even though 【答案】B 【详解】句意：他必须一醒来就做作业。他感到很累。 考查连词。before在……前；as soon as一……就；even though虽然。根据“He must do his homework…he wakes up.”可知，此处应是一醒来就必须写作业，应用as soon as引导时间状语从句。故选B。 3．Which “while” of the following shares similar (相似的) usage to the one in the sentence “Many birds live in Zhalong all year round, while some go there only for a short stay.”? A．Tom is very confident while Katy’s shy and quiet. B．We chatted with each other in the park for quite a while. C．Can you help me look after my pet dog while I’m away? D．While I was waiting for the bus, a stranger came towards me. 【答案】A 【详解】句意：下列哪个“while”与句子“许多鸟一年到头都住在扎龙，而有些只在那里短暂停留。”中的while有相似的用法？ 考查连词词义。Tom is very confident while Katy’s shy and quiet.汤姆非常自信，而凯蒂则害羞而且安静。句中的while表转折；We chatted with each other in the park for quite a while.我们在公园里互相聊了好一会儿。句中的while表示一段时间；Can you help me look after my pet dog while I’m away?我不在的时候，你能帮我照看一下我的宠物狗吗？句中的while表示“当……时”；While I was waiting for the bus, a stranger came towards me.当我在等公共汽车时，一个陌生人向我走来。句中的while表示“当……时”。Many birds live in Zhalong all year round, while some go there only for a short stay.许多鸟一年到头都住在扎龙，而有些只在那里短暂停留。本句中的while表示转折。可见，只有A选项中的while和题目中的while意思相似。故选A。 4．—Time wait for no man. —But people won’t realize the importance of time ________ it’s gone. A．until B．although C．so that 【答案】A 【详解】句意：——时间不等人。——但人们只有在失去时间后才会意识到时间的重要性。 考查从属连词辨析。until直到；although虽然；so that以便。根据“But people won’t realize the importance of time ... it’s gone.”可知，人们只有在失去时间后才会意识到时间的重要性，此处是not...until“直到……才”，引导时间状语从句，故选A。 5．Michael will play computer games ________ his mom goes out for work. A．unless B．as soon as C．because 【答案】B 【详解】句意：迈克尔妈妈一出去上班，他就会玩电脑游戏。 考查连词词义辨析。unless除非，引导条件状语从句，表否定条件；as soon as一……就……，引导时间状语从句，强调两个动作的先后紧密衔接；because因为，引导原因状语从句，表因果关系 。此句中“goes out for work”和“play computer games”是先后紧密衔接的动作，所以用as soon as符合语境。故选B。 6．—How long did your English teacher teach at this school? —Ah, she ________ at this school since she ________ Wuhan. A．has taught; has come to B．taught; came to C．has been teaching; came to D．has taught; has been to 【答案】C 【详解】句意：——你的英语老师在这所学校教了多久？——啊，自从她来到武汉后，她就一直在这所学校教书。 考查时态搭配。“since”引导的时间状语从句，主句需用现在完成时或现在完成进行时（强调持续动作），从句用一般过去时。“has been teaching”强调从过去持续到现在的动作，“came to”表示过去一次性动作。故选C。 7．________ the signal (信号) gets stronger, the multimedia device ________ the Wi-Fi smoothly. A．With; will be connected to B．As; will be connected to C．When; was connected to D．As; is connected to 【答案】B 【详解】句意：随着信号变强，多媒体设备将顺利连接到Wi-Fi。 考查连词和时态。With用，介词，后接名词、代词或动名词等，不能接句子；As在（某事发生的）同时，连词，可引导时间状语从句；When当……时候，连词，可引导时间状语从句。第一空后是完整的句子，所以排除A；第二空，设备是“被连接”到Wi-Fi，用被动语态，且根据“信号变强”的逻辑，连接动作是将来的，用一般将来时的被动语态“will be connected to”。故选B。 8．There ________ a sports meet next week if it ________. A．is going to have; doesn’t rain B．is going to be; doesn’t rain C．is going to be; won’t rain D．is going to have; won’t rain 【答案】B 【详解】句意：如果不下雨，下周我们将有运动会。 考查there be句型及时态。there be句型的将来时是“There is going to be”，可排除AD项；本句包括if引导的条件状语从句，主句是一般将来时，从句要用一般现在时，即“主将从现”。故选B。 9．—Do you know if he ________ the job offer? —Unless he ________ a higher salary, I am sure he won’t. A．will receive; accepts B．will accept; receives C．receives; will accept D．accepts; receives 【答案】B 【详解】句意：——你知道他是否会接受这个工作吗？——除非他得到更高的薪水，我确定他不会。 考查时态和动词辨析。receive收到；accept接受。根据“Do you know if he … the job offer?”可知，此句是if引导的宾语从句，此处说的是不知道是否会接受，用一般将来时，因此第一个空填will accept；再由“Unless he…a higher salary,”可知，此句是Unless条件状语从句，该从句描述的是除非他得到更高的薪水，这是一个条件，通常使用一般现在时来表示将来。所以，这里应该使用一般现在时“receives”。故选B。 10．—If Kate _________ back, tell her to come to my office, please. —OK, I ________. A．comes; will B．comes; do C．will come; will D．will come; do 【答案】A 【详解】句意：——如果凯特回来，请告诉她来我的办公室。——好的，我会的。 考查时态用法。根据“If Kate”可知，第一空所在句子为条件状语从句；在条件状语从句中，从句用一般现在时表示将来，主语为“Kate”，故动词应用单三形式，即“comes”。根据“OK, I…”可知，是答应之后就告诉她，时态应为一般将来时，结构为will+动词原形，此处省略动词。故选A。 11．—Can I borrow your dictionary? —Sure, but only ________ you promise to return it tomorrow. A．though B．unless C．because D．if 【答案】D 【详解】句意：——我能借你的字典吗？——当然可以，但前提是你保证明天还回来。 考查连词辨析。though虽然，尽管；unless除非，如果不；because因为；if如果，假如。根据“Sure, but only ... you promise to return it tomorrow.”可知，“保证明天归还”是“借字典”的肯定条件，故用if引导条件状语从句。故选D。 12．—What’s your plan for tomorrow? —I don’t know if it ________ tomorrow. If it ________, I’ll stay at home. A．will rain; rains B．will rain; will rain C．rains; will rain D．rains; rains 【答案】A 【详解】句意：——你明天的计划是什么？——我不知道明天是否会下雨。如果下雨，我将待在家里。 考查宾语从句和条件状语从句的时态。will rain一般将来时态；rains第三人称单数。根据“I don’t know if it...tomorrow. If it...I’ll stay at home.”可知，第一空，此处为if引导的宾语从句，主句为一般现在时，从句时间状语为“tomorrow”，故用一般将来时will rain；第二空，此处为if引导的条件状语从句，遵循“主将从现”原则，主句为一般将来时，从句应用一般现在时表将来，主语为“it”，谓语动词应用三单形式rains。故选A。 13．________ many people like to eat junk food, they should really eat more fruit and vegetables ________ they can be healthy. A．Until; because B．Although; / C．Although; so that D．So that; although 【答案】C 【详解】句意：尽管许多人喜欢吃垃圾食物，但是他们真地应该吃更多的水果和蔬菜以便于他们能健康。 考查让步状语从句和目的状语从句。although尽管，不与but连用；until直到；because因为；so that以便。第一个空，根据“many people like to eat junk food”许多人喜欢吃垃圾食品，及“they should really eat more fruit and vegetables”他们真的应该多吃水果和蔬菜，可知应该是“虽然”，用Although引导让步状语从句；第二个空，根据“they should really eat more fruit and vegetables”他们真的应该多吃水果和蔬菜，及“they can be healthy”他们才能健康，可知应该是“以便”，用so that引导目的状语从句。故选C。 14．When doing some reading, many students find it hard to understand some sentences ________ there are few new words in them. A．because B．if C．but D．though 【答案】D 【详解】句意：在阅读时，许多学生发现有些句子很难理解，尽管其中几乎没有新词。 考查连词辨析。because因为；if如果；but但是；though尽管，根据“there are few new words in them”，可知其中很少有新词，“few”表示“几乎没有”的意思，但是前文却表示“many students find it hard to understand”，所以不可能是“因果关系”，而是“though”引导的让步状语从句。故选D。 【点睛】考生容易错选A，误将“few”看成“a few”，把前后文理解成“因果关系”。 15．No matter you give up, never give up hope. A．what B．where C．who D．when 【答案】A 【详解】句意：无论你放弃什么，都不要放弃希望。 考查让步状语从句。what什么；where在哪儿；who谁；when什么时候。根据“never give up hope”可知，是指你无论放弃什么都不要放弃希望，故选A。 16．You should try to keep calm __________ happens to you. A．wherever B．no matter which C．however D．no matter what 【答案】D 【详解】句意：无论发生什么，你应该尽力保持冷静。 考查连词词义辨析。wherever无论在哪里；no matter which无论哪一个；however无论怎样；no matter what无论什么。根据句意这里需要填的是“无论什么”，D项“no matter what”的用法符合题意，故选D。 17．________ the News is boring, I still watch it every day because I hope to find out what’s going on around the word. A．However B．Although C．Because 【答案】B 【详解】句意：虽然新闻很无聊，但我仍然每天都看，因为我希望了解世界上正在发生的事情。 考查Although引导的让步状语从句。However然而，副词；Although虽然，连词；Because因为，连词。根据“...the News is boring, I still watch it every day”可知，前后句意构成让步关系，用Although引导让步状语从句。故选B。 18．________ we have a few minutes to wait for the train, let’s have a cup of coffee. A．Although B．Until C．Since D．Unless 【答案】C 【详解】句意：由于我们还有几分钟等火车，让我们喝杯咖啡吧。 考查连词辨析。Although尽管，引导让步状语从句；Until直到，引导时间状语从句；Since既然，由于，引导原因状语从句；Unless除非，引导条件状语从句。分析语境可知，前半句是一个原因状语从句，空处表示“由于”。故选C。 19．—The local food looks a bit strange. —Well, ________ we are here, why not give it a try? A．though B．unless C．since D．because 【答案】C 【详解】句意：——当地的食物看起来有点奇怪。——既然我们在这里，为什么不试一试呢？ 考查连词辨析。though尽管；unless除非；since既然；because因为。根据“Well, ... we are here, why not give it a try?”可知前因后果，此处表示既然在这里，建议试一试，用since引导原因状语从句，表示已知的、显然的理由。故选C。 20．I wanted to buy that kind of dress, because I ________ the cloth ________ well. A．was told; washed B．have told; washes C．had been told; washes D．was told; is washed 【答案】C 【详解】句意：我想要买那种裙子，因为我已经被告知那种布料好洗。 考查过去完成时和被动语态。根据语境可知，想买那种裙子，可推测此处是已经被告知那种布料好洗，句子为because引导的原因状语从句，主句为一般过去时，从句应用相应的过去时态，因动作对现在造成影响，故时态为过去完成时，又因“我”和“告诉”之间为被动关系，语态应为被动，谓语用“had been+过去分词”的结构；而动词wash表示主语the cloth现在的特征，用主动形式表被动意义，时态用一般现在时，动词用“三单”形式，washes为动词“三单”形式。故选C。 21．________ you know it is raining outside, you should take an umbrella with you if you go out. A．Until B．Though C．Since D．Before 【答案】C 【详解】句意：既然你知道外面正在下雨，如果出门就应该带上雨伞。 考查连词辨析。Until到……时；Though尽管；Since既然；Before在……之前。根据句意可知“you know it is raining outside”是后面句子“you should take an umbrella with you if you go out”的原因，那么需要用“since”来引导原因状语从句。故选C。 22．Although many people view conflict as bad, conflict is sometimes useful ________ it forces people to test the relative merits of their attitudes and behavior. A．by which B．to which C．in that D．so that 【答案】C 【详解】句意：尽管许多人认为冲突是不好的，但冲突有时是有用的，因为它迫使人们检验自己态度和行为的相对优点。 考查原因状语从句。by which通过……；to which对于……；in that因为、在于；so that以便、为了。根据“Although many people view conflict as bad, conflict is sometimes useful...it forces people to test the relative merits of their attitudes and behavior.”可知，句中表述冲突有用是“因为”它能迫使人们做某事。此处使用“in that”意为“因为”，符合语境。故选C。 3 / 3 学科网（北京）股份有限公司 $