Unit 1 Water 重点语法：时间状语从句（七大题型，80题）精讲练-2025-2026学年八年级英语上册重难点讲练全攻略（沪教版五四制2024）

2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 学校:___________姓名：___________班级：___________考号：___________ Unit1 Water 重点语法：时间状语从句（七大题型，80题）精讲练 目录 语法知识精讲 1 语法知识精练 3 题型一：when引导时间状语从句 3 题型二：while引导时间状语从句 5 题型三：as/since引导时间状语从句 7 题型四：before/after引导时间状语从句 9 题型五：till/until引导时间状语从句 12 题型六：一......就......表达法 14 题型七：综合提升巩固练 17 语法知识精讲 引导词 / 用法分类 连接词 / 短语示例 作用说明 例句示例 基本构成 when, as, before, until, as soon as 等 引导时间状语从句，与主句构成复合句，说明动作或状态的时间关系 When water becomes ice, it takes up more space.（When 引导，“水结冰时，体积变大” ）；Water takes up more space when it becomes ice.（when 引导，位置变化 ） 表示在某个时间点 / 之前 / 之后发生动作或状态 when, before, after 描述动作或状态在特定时间节点的情况 The sky was grey when I woke up.（when ，“我醒来时，天空是灰色的” ）；We must take action to protect water before it’s too late.（before ，“在为时已晚前，我们要行动保护水资源” ）；After I cleared out some apps, my phone started working better.（after ，“我清理一些应用后，手机运行更好了” ） 表示情形 / 动作持续或伴随 when, as, until, since 说明动作持续时长或与其他动作伴随发生 Mum used to bathe my sister and me with only one cup of water when we were small.（when ，“我们小时候，妈妈用一杯水给我和妹妹洗澡” ）；As the water quietly disappeared with the hot desert wind, we also prepared to leave the toba and move on.（as ，“水随热风悄悄消失时，我们准备离开洼地继续前行” ）；I will use this computer until it becomes too old.（until ，“我会用这台电脑直到它变旧” ）；Since social media was introduced, people have been sharing their lives online like never before.（since ，“社交媒体出现后，人们在线分享生活更频繁了” ） 表示一件事发生于另一件事进程中或某时间段 when, while, as 强调动作发生在另一动作过程里 I broke a cup when I washed/was washing the dishes.（when ，“我洗碗时打碎了杯子” ）；I ran into my science teacher when/while/as I was visiting the Water Science Museum.（when/while/as ，“我参观水科学博物馆时碰到科学老师” ）；I found an interesting article about AI technology while I was browsing the internet.（while ，“我浏览网络时发现一篇有趣的人工智能文章” ） 表示两件事一起或同时发生 as, while 体现动作同步性 As I stepped into the water, the mud covered my feet.（as ，“我踏入水中时，泥没过脚” ）；My mother got breakfast ready while the robot cleaner cleaned the floor.（while ，“扫地机器人打扫时，妈妈准备好早餐” ）；While the robot cleaner is cleaning the floor, my mother is preparing the breakfast.（while ，“扫地机器人打扫期间，妈妈在准备早餐” ） 表示一件事紧接着另一件事 as soon as 说明动作紧密衔接 I’ll call you as soon as I arrive.（as soon as ，“我一到就给你打电话” ）；As soon as he receives a new message, he will reach for his phone to check it.（as soon as ，“他一收到新消息，就拿手机查看” ） 将来事件的时间状语从句规则 / 谈论未来事件时，时间状语从句用一般现在时表将来 （如：I’ll go to the park when I finish my homework. finish 用一般现在时表将来动作 ） 语法知识精练 题型一：when引导时间状语从句 1．The host was waiting at the gate________ his guests arrived. A．after B．when C．unless D．if 2．The man was looking at a postcard sadly ________ his friend came in. A．while B．when C．after D．before 3．James always shares some housework ________ his parents work hard. A．but B．or C．when D．before 4．We can learn to take turns, share and solve problems ________ we join teams working together. A．or B．but C．when D．whether 5．It is quite natural to feel nervous ______ you speak in public. A．though B．when C．after D．than 6．________ Jim opened the door, the phone rang. A．When B．Since C．While D．Until 7．—Jack, remember ______ off the lights when ______ your bedroom. —OK, I won’t forget, Mom. A．turning; leaving B．to turn; leaving C．to turn; leave D．turning; left 8．Danny could read and write when he was five years old. A．five years later B．at the age of five C．five years ago D．for five years 9．________ I fall ill, my mother always makes warm chicken soup. A．And B．When C．But D．So 10．I was playing the piano ________ it began to rain heavily. A．until B．when C．while D．although 题型二：while引导时间状语从句 11．—Do you often use emojis (表情符号) ______ sending messages to your friends? —Yes. They are very funny and can help me express myself very well. A．until B．while C．before D．after 12．Look! Harry is doing his homework ________ his sister is drawing. A．if B．while C．before D．till 13．—Passengers had better not use their smart phone ________ they are crossing the street. —Sorry, I won’t do it any more. A．unless B．before C．while D．after 14．Love your parents ________ they are alive. Don’t wait until it is too late. A．unless B．although C．until D．while 15．To reduce waste, we should turn off the tap ________ brushing teeth. A．before B．without C．while D．for 16．To avoid making mistakes in the exam, we should be more careful ________ we are answering the questions. A．while B．unless C．as soon as D．after 17．________ the light were changing to red, a kid suddenly ran into the street. A．Unless B．While C．Since D．Before 18．I was reading the book Marie Curie ________ my sister was doing her homework. A．while B．although C．if D．until 19．Peter suddenly saw an old friend ________ he was walking down the street. A．because B．if C．while D．or 20．My father was watering the flowers ________ my mother was cleaning the window. A．unless B．while C．if D．until 题型三：as/since引导时间状语从句 21．How time flies! It has been ten years since I ________ him in Xuzhou. A．meet B．met C．have met D．will meet 22．________ the three-year program began, more and more people have learned about weight management. A．When B．Since C．Before D．Until 23．—We have been friends since we ________ in the same neighborhood. —How time flies! A．have lived B．lived C．live D．will live 24．—How long is it since he ________ his hometown? —He ________ for nearly 10 years. A．left; left B．has left; has left C．has left; has been away D．left; has been away 25．Wuxi has been popular ________ the Spring Festival Gala showed its beauty to the world. A．until B．if C．before D．since 26．He sat watching her gently ________ she got the luggage (行李) ready for her business trip. A．as B．if C．for D．since 27．Benny saw the client sitting at the desk ________ she walked into the bank. A．because B．although C．as D．until 28．Our life will get more modern ________ science and technology develop. A．as B．before C．if D．though 29．The wind power of our country develops more quickly ________ we push for green energy. A．though B．before C．as D．until 30．________ the bad man was leaving, the police came and caught him. A．So B．If C．But D．As 题型四：before/after引导时间状语从句 31．—I missed the live-broadcast of the Shenzhou-20 launch. —What a pity! It may be a long time ________ you get another exciting moment. A．since B．after C．until D．before 32．—Daniel made a serious mistake, but he took action to change that ________ it got worse. —Luckily, he didn’t cause any loss. A．when B．after C．until D．before 33．I’m going to do some research into traditional music for my report ________ I write on it. A．though B．before C．as if D．unless 34．She felt more confident _______ she won the speaking competition. A．until B．while C．before D．after 35．They will not finish the work on time ________they work together. A．while B．unless C．after D．because 36．“After our ship crashed against the rocks, I swam as far as I could.” The underlined word “After” is used to_________. A．connect ideas B．give examples C．show time D．add more information 37．—Because of the Double Reduction Policy (双减政策), students go home ________ they finish their homework at school. —Sure. As a parent of a Grade 9 student, I don’t feel so tired as before. A．before B．while C．since D．after 38．—What do you usually do ________ you finish your homework? —I usually go out for a walk with my parents or read the books that I like. A．since B．after C．until D．while 39．Read the instructions carefully before you ________ the machine. A．use B．are using C．used D．have used 40．We’d better take action to solve a problem ______ it gets worse. A．before B．after C．until D．since 题型五：till/until引导时间状语从句 41．We don’t know the love of our parents _________ we become parents ourselves one day. A．after B．when C．since D．until 42．—You look so tired. What’s wrong? —I didn’t go to bed ________ I finish watching the football match. A．until B．if C．though D．because 43．Tom kept working on the math problem ________ he found the answer. A．when B．after C．unless D．until 44．—When should I return the book? —Just take your time. You can keep it ________ you finish reading it. A．since B．if C．while D．till 45．—Mum, when can you take me out for the shopping? —Not ________ your father arrives home. A．before B．since C．after D．until 46．The baby ________ stop crying ________ its mother came back. A．doesn’t; until B．didn’t; because C．didn’t; until D．doesn’t; because 47．—Excuse me, is it my turn to enter the doctor’s office now? —Not yet. Please wait here until your name ________. A．calls B．will call C．is called D．is calling 48．In Chinese culture, the young won’t start dinner _______ the elders (长辈) take their seats. A．when B．until C．if D．so 49．People did not worry about AI safety ________ Deepseek became popular. A．when B．while C．since D．until 50．I didn’t go to bed ________ I finished reading this novel. A．until B．if C．because D．when 题型六：一......就......表达法 51．Tony will begin to do his homework as soon as he ________ home. A．got B．gets C．is getting D．has got 52．I will return it to the library ________ I finish reading Little Women. A．so that B．although C．as soon as D．unless 53．I called my parents ________ I got to my grandparents’ home. That was because I didn’t want them to worry about me. A．as soon as B．though C．so that D．unless 54．—When will you go to see your grandpa? —I’ll see him ________ I get off the plane. He is waiting for me at the airport. A．as soon as B．as long as C．as far as D．as easily as 55．— Jack, have you done the survey? — Not yet. I am in New York now. I’ll start it ________ I come back. A．whenever B．as soon as C．before D．after 56．As soon as he ________ back, I’ll tell him when ________ and see him. A．comes, will you come B．will come, do you come C．comes, you will come D．will come, you come 57．—Could you please help me give the book back to Susan? —Sure. I will do that ________ I see her this afternoon. A．as soon as B．as many as C．as much as D．as good as 58．—Tom, give the report to Linda, please. —OK, I’ll give it to her ________ she arrives here. A．until B．since C．though D．as soon as 59．________ the kids walked into Jilin Science and Technology Museum, they headed straight for the robot area. A．Unless B．Although C．As soon as D．Until 60．Nancy called her parents ________ she knew the good results of her final tests. A．as soon as B．so that C．as long as D．because 题型七：综合提升巩固练 61．For your safety, you mustn’t get close to the train ________ it stops. A．while B．when C．since D．until 62．________ astronauts go on spacewalks, they wear spacesuits to keep themselves safe. A．Though B．Till C．When D．Unless 63．Let’s wait ________ the rain stops. A．so B．while C．since D．until 64．You will never truly understand your parents’ great love ______ you grow up. A．until B．if C．since D．as 65．—Mom, shall we have supper now? —Oh, we won’t have supper ________ your dad comes back. A．until B．since C．while D．after 66．Jack has learned more about teamwork (团队合作) _______ he joined the soccer team. A．until B．since C．while D．though 67．—I’m afraid the meeting has begun. —Don’t worry. It ________ until the bell ________. A．will begin; rings B．doesn’t begin; will ring C．won’t begin; will ring D．won’t begin; rings 68．—Did you catch the early bus this morning? —Yes. The bus started to move ________ I got on it. A．as soon as B．as if C．though D．before 69．Many students didn’t realize (意识到) the importance of study _______ they left school. A．when B．after C．as D．until 70．—Can you tell me when you are going to arrive there? —I’m not sure. But I’ll ring you up as soon as I ________ there tomorrow. A．arrive B．arrived C．will arrive D．am going to arrive 71．They have been friends ________ they first met. A．since B．while C．before D．after 72．—Peter, how long have you been in the ice skating club? —Not long. I didn’t join the club ________ I enjoyed the 2022 Beijing Winter Olympics. A．when B．until C．unless D．after 73．Before you get off the bus, you should wait ________ it has stopped. A．until B．but C．because D．so 74．To avoid the virus (病毒), we should wash hands more carefully ________ we have meals. A．so B．before C．because D．although 75．Teenagers should do some housework ________ they finish their homework. A．until B．but C．after D．unless 76．— Would you please give this newly-published novel to Jack?   — Certainly, ________ he comes back. A．before B．unless C．until D．as soon as 77．I didn’t understand my mom’s love ________ we had a long talk. A．until B．if C．since D．because 78．Jenny didn’t go to bed _______ her mother came home last night. A．as soon as B．if C．while D．until 79．Tom didn’t go to bed ________ his mother came back last night. A．until B．if C．because D．unless 80．They were playing soccer on the playground ________ the storm came. A．as soon as B．as long as C．when D．while 8 同步新教材，周周有练习，月月有重点！ 9 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $$ 2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 2025-2026学年一线教师制作新教材英语同步精品系列资料，名师遴选！ 学校:___________姓名：___________班级：___________考号：___________ Unit1 Water 重点语法：时间状语从句（七大题型，80题）精讲练 目录 语法知识精讲 1 语法知识精练 3 题型一：when引导时间状语从句 3 题型二：while引导时间状语从句 5 题型三：as/since引导时间状语从句 7 题型四：before/after引导时间状语从句 9 题型五：till/until引导时间状语从句 12 题型六：一......就......表达法 14 题型七：综合提升巩固练 17 语法知识精讲 引导词 / 用法分类 连接词 / 短语示例 作用说明 例句示例 基本构成 when, as, before, until, as soon as 等 引导时间状语从句，与主句构成复合句，说明动作或状态的时间关系 When water becomes ice, it takes up more space.（When 引导，“水结冰时，体积变大” ）；Water takes up more space when it becomes ice.（when 引导，位置变化 ） 表示在某个时间点 / 之前 / 之后发生动作或状态 when, before, after 描述动作或状态在特定时间节点的情况 The sky was grey when I woke up.（when ，“我醒来时，天空是灰色的” ）；We must take action to protect water before it’s too late.（before ，“在为时已晚前，我们要行动保护水资源” ）；After I cleared out some apps, my phone started working better.（after ，“我清理一些应用后，手机运行更好了” ） 表示情形 / 动作持续或伴随 when, as, until, since 说明动作持续时长或与其他动作伴随发生 Mum used to bathe my sister and me with only one cup of water when we were small.（when ，“我们小时候，妈妈用一杯水给我和妹妹洗澡” ）；As the water quietly disappeared with the hot desert wind, we also prepared to leave the toba and move on.（as ，“水随热风悄悄消失时，我们准备离开洼地继续前行” ）；I will use this computer until it becomes too old.（until ，“我会用这台电脑直到它变旧” ）；Since social media was introduced, people have been sharing their lives online like never before.（since ，“社交媒体出现后，人们在线分享生活更频繁了” ） 表示一件事发生于另一件事进程中或某时间段 when, while, as 强调动作发生在另一动作过程里 I broke a cup when I washed/was washing the dishes.（when ，“我洗碗时打碎了杯子” ）；I ran into my science teacher when/while/as I was visiting the Water Science Museum.（when/while/as ，“我参观水科学博物馆时碰到科学老师” ）；I found an interesting article about AI technology while I was browsing the internet.（while ，“我浏览网络时发现一篇有趣的人工智能文章” ） 表示两件事一起或同时发生 as, while 体现动作同步性 As I stepped into the water, the mud covered my feet.（as ，“我踏入水中时，泥没过脚” ）；My mother got breakfast ready while the robot cleaner cleaned the floor.（while ，“扫地机器人打扫时，妈妈准备好早餐” ）；While the robot cleaner is cleaning the floor, my mother is preparing the breakfast.（while ，“扫地机器人打扫期间，妈妈在准备早餐” ） 表示一件事紧接着另一件事 as soon as 说明动作紧密衔接 I’ll call you as soon as I arrive.（as soon as ，“我一到就给你打电话” ）；As soon as he receives a new message, he will reach for his phone to check it.（as soon as ，“他一收到新消息，就拿手机查看” ） 将来事件的时间状语从句规则 / 谈论未来事件时，时间状语从句用一般现在时表将来 （如：I’ll go to the park when I finish my homework. finish 用一般现在时表将来动作 ） 语法知识精练 题型一：when引导时间状语从句 1．The host was waiting at the gate________ his guests arrived. A．after B．when C．unless D．if 【答案】B 【详解】句意：客人到达时，主人正在门口等候。 考查连词辨析题。 after在……之后；when当……时；unless除非；if如果。根据“The host was waiting at the gate... his guests arrived.”可知，此处表示当客人到达时，主人正在门口等待，when符合主人等待的动作在客人到达的时刻正在发生的语境。故选B。 2．The man was looking at a postcard sadly ________ his friend came in. A．while B．when C．after D．before 【答案】B 【详解】句意：那个男人正悲伤地看着一张明信片，这时他的朋友走了进来。 考查连词辨析。while当……时候，搭配延续性动词，接持续性的动作；when当……时候；after在……之后；before在……之前。当一个动作发生，另一个动作正在进行时，用when/while引导时间状语从句，且从句中的谓语动词came in“进来”为瞬间动词可知，应用when引导时间状语从句。故选B。 3．James always shares some housework ________ his parents work hard. A．but B．or C．when D．before 【答案】C 【详解】句意：当父母努力工作时，詹姆斯总是分担一些家务。 考查连词词义辨析。but但是；or或者；when当……时候；before在……之前。根据“James always shares some housework…his parents work hard.”的语境可知，此处主从句动作同时发生，应用when引导时间状语从句。故选C。 4．We can learn to take turns, share and solve problems ________ we join teams working together. A．or B．but C．when D．whether 【答案】C 【详解】句意：当我们加入团队合作时，我们可以学会轮流、分享和解决问题。 考查连词辨析。or或者；but但是；when在……时候；whether是否。根据“we join teams working together”可知，此处是指在加入团队合作的过程中能学会各项技能，应用when引导时间状语从句。故选C。 5．It is quite natural to feel nervous ______ you speak in public. A．though B．when C．after D．than 【答案】B 【详解】句意：当你在公众面前讲话时感到紧张是很自然的。 考查时间状语从句。though尽管；when当……时；after在……之后；than比。句子描述的是在公共场合说话的时候会引发紧张感，用when引导时间状语从句。故选B。 6．________ Jim opened the door, the phone rang. A．When B．Since C．While D．Until 【答案】A 【详解】句意：当Jim打开门的时候，电话铃响了。 考查连词辨析。When当……时；Since自从；While当……时候；Until直到。根据“Jim opened the door, the phone rang.”可知，此处描述的是两个动作几乎同时发生，即“打开门”和“电话铃响”，“opened”为短暂性动词，因此应用“When”引导时间状语从句。故选A。 7．—Jack, remember ______ off the lights when ______ your bedroom. —OK, I won’t forget, Mom. A．turning; leaving B．to turn; leaving C．to turn; leave D．turning; left 【答案】B 【详解】句意：——杰克，记得离开卧室时把灯关掉。——好吧，我不会忘记的，妈妈。 考查非谓语动词。remember to do sth.记得去做某事（未做）；remember doing sth.记得做过某事（已做）。第一个空，此处妈妈提醒Jack关灯，还未发生，故用不定式 to turn。第二个空，是省略结构，当主句和从句主语一致时，可省略主语并用现在分词，此处用leaving表示“离开卧室时”。故选B。 8．Danny could read and write when he was five years old. A．five years later B．at the age of five C．five years ago D．for five years 【答案】B 【详解】句意：丹尼五岁时就会读书写字了。 考查同义短语。five years later五年后；at the age of five在五岁时；five years ago五年前；for five years长达五年。根据“Danny could read and write when he was five years old.”可知，原句中“when he was five years old”表示“当他五岁时”，“at the age of five”直接对应“when he was five years old”，均表示“在五岁时”，符合句子的时间逻辑。故选B。 9．________ I fall ill, my mother always makes warm chicken soup. A．And B．When C．But D．So 【答案】B 【详解】句意：当我生病时，我妈妈总是做温暖的鸡汤。 考查连词辨析。And和，表并列；When当……时候，引导时间状语从句；But但是，表转折；So所以，表结果。根据语境可知，此处是在描述“当我生病时”这个时间点，妈妈会做鸡汤，所以应该用When引导时间状语从句。故选B。 10．I was playing the piano ________ it began to rain heavily. A．until B．when C．while D．although 【答案】B 【详解】句意：我正在弹钢琴，这时突然下起了大雨。 考查连词辨析。until直到；when当……时；while当……时，常强调两个同时进行的持续动作；although虽然。根据“began”和“was playing”可知，从句了一般过去时，主句用了过去进行时，空处需when引导时间状语从句，故选B。 题型二：while引导时间状语从句 11．—Do you often use emojis (表情符号) ______ sending messages to your friends? —Yes. They are very funny and can help me express myself very well. A．until B．while C．before D．after 【答案】B 【详解】句意：——你在给朋友发消息时经常使用表情符号吗？——是的。它们很有趣，能帮助我很好地表达自己。     考查连词辨析。until直到；while当……时候；before在……之前；after在……之后。根据“Do you often use emojis ... sending messages to your friends?”可知，此处表示“在发消息的时候使用表情符号”，强调动作同时发生，故选B。 12．Look! Harry is doing his homework ________ his sister is drawing. A．if B．while C．before D．till 【答案】B 【详解】句意：看！哈里正在做作业，而他妹妹正在画画。 考查连词辨析。if如果；while当……时候；before在……之前；till直到。根据“Look! Harry is doing his homework”和“his sister is drawing”可知，此处表示两个动作同时进行，while引导的时间状语从句，符合语境，故选B。 13．—Passengers had better not use their smart phone ________ they are crossing the street. —Sorry, I won’t do it any more. A．unless B．before C．while D．after 【答案】C 【详解】句意：——乘客过马路时最好不要使用智能手机。——抱歉，我再也不会这样做了。 考查连词辨析。unless除非；before在……之前；while当……时；after在……之后。根据“…they are crossing the street.”可知，此处指正在过马路的过程中，强调动作同时进行，应用while引导时间状语从句。故选C。 14．Love your parents ________ they are alive. Don’t wait until it is too late. A．unless B．although C．until D．while 【答案】D 【详解】句意：父母在世时要爱他们。不要等到为时已晚。 考查连词的辨析。unless除非；although尽管；until直到……为止；while当……时。根据“Love your parents…they are alive.”可知，本句为时间状语从句，表示“当父母还活着的时候”，需用连词while。故选D。 15．To reduce waste, we should turn off the tap ________ brushing teeth. A．before B．without C．while D．for 【答案】C 【详解】句意：为了减少浪费，我们应该在刷牙的时候关掉水龙头。 考查while引导的时间状语从句。before在……之前；without没有；while当……时候，强调主从句动作同时进行；for为了，持续。根据语境可知，这里是说在刷牙这个动作进行的同时关掉水龙头，强调两个动作同时发生，while符合语境。故选C。 16．To avoid making mistakes in the exam, we should be more careful ________ we are answering the questions. A．while B．unless C．as soon as D．after 【答案】A 【详解】句意：为了避免考试中出错，我们在回答问题时应该更加认真。 考查连词辨析。while当；unless除非；as soon as一……就；after在……之后。根据“we are answering the questions.”可知是回答问题的时候要认真，用while引导时间状语从句。故选A。 17．________ the light were changing to red, a kid suddenly ran into the street. A．Unless B．While C．Since D．Before 【答案】B 【详解】句意：当交通灯正要变成红灯时，一个小孩突然跑到了街上。 考查连词辨析。Unless除非，如果不，引导条件状语从句；While当……时候，强调主从句动作同时发生；Since自从，既然，引导时间状语从句或原因状语从句；Before在……之前，引导时间状语从句。根据“...the light were changing to red, a kid suddenly ran into the street.”可知，此处表达的是“当交通灯变化时，小孩跑上街”，强调两个动作同时进行，所以应用While引导时间状语从句，故选B。 18．I was reading the book Marie Curie ________ my sister was doing her homework. A．while B．although C．if D．until 【答案】A 【详解】句意：当我妹妹在做作业的时候，我正在读《居里夫人》这本书。 考查从属连词辨析。while当……时候；although尽管；if如果；until直到。根据“I was reading the book Marie Curie...my sister was doing her homework.”可知，“我读书”和“妹妹做作业”这两个动作是同时进行的，此处用“while”连接。故选A。 19．Peter suddenly saw an old friend ________ he was walking down the street. A．because B．if C．while D．or 【答案】C 【详解】句意：彼得在街上散步时，突然看见了一位老朋友。 考查连词辨析。because因为，表原因；if如果，表条件；while当……时，表时间；or或者，表选择。根据“Peter suddenly saw an old friend ... he was walking down the street.”可知，此处描述的是两个动作同时发生，即“看见老朋友”和“散步”同时进行，需要用表时间的连词while。故选C。 20．My father was watering the flowers ________ my mother was cleaning the window. A．unless B．while C．if D．until 【答案】B 【详解】句意：我爸爸在浇花，妈妈在擦窗户。 考查连词辨析。unless除非；while当……时，强调两个同时进行的持续性动作；if如果；until直到。根据“was watering the flowers”和“was cleaning the window”可知，“浇花”和“擦窗户”两个持续性动作同时进行，应用while连接。故选B。 题型三：as/since引导时间状语从句 21．How time flies! It has been ten years since I ________ him in Xuzhou. A．meet B．met C．have met D．will meet 【答案】B 【详解】句意：时间过得真快！我在徐州见到他已经十年了。 考查一般过去时。meet遇见，一般现在时；met遇见，一般过去时；have met已经遇见，现在完成时；will meet将会遇见，一般将来时。since引导的时间状语从句用一般过去时，主句用现在完成时。故选B。 22．________ the three-year program began, more and more people have learned about weight management. A．When B．Since C．Before D．Until 【答案】B 【详解】句意：自从这个三年计划开始以来，越来越多的人了解了体重管理。 考查连词辨析。When当……时；Since自从；Before在……之前；Until直到。根据“the three-year program began, more and more people have learned about...”可知，表示“从过去某一时间点持续到现在”应用since。故选B。 23．—We have been friends since we ________ in the same neighborhood. —How time flies! A．have lived B．lived C．live D．will live 【答案】B 【详解】句意：——自从我们住在同一个街区以来，我们一直是朋友。 ——时间过得真快！ 考查动词时态。根据“We have been friends since we ... in the same neighborhood.”可知，“since”引导的时间状语从句，主句使用现在完成时，从句应使用一般过去时。故选B。 24．—How long is it since he ________ his hometown? —He ________ for nearly 10 years. A．left; left B．has left; has left C．has left; has been away D．left; has been away 【答案】D 【详解】句意：——他离开家乡多久了？——他离开近10年了。 考查动词时态。第一空：“since”引导时间状语从句时，主句用现在完成时，从句用一般过去时，故填left；第二空：“for nearly 10 years”表示持续的时间段，需用现在完成时的延续性动词结构，has been away符合语境，而“has left”是瞬间动词不能接时间段。故选D。 25．Wuxi has been popular ________ the Spring Festival Gala showed its beauty to the world. A．until B．if C．before D．since 【答案】D 【详解】句意：无锡在春节联欢晚会向世界展示其美丽后一直很受欢迎。 考查连词辨析。until直到；if如果；before在……之前；since自从。根据句意，主句用现在完成时（has been popular），表示“自春晚展示后持续受欢迎”，需用“since”引导时间状语从句，强调从过去某一时间点持续至今的状态。故选D。 26．He sat watching her gently ________ she got the luggage (行李) ready for her business trip. A．as B．if C．for D．since 【答案】A 【详解】句意：当她准备出差的行李时，他坐下来温柔地着看着她。 考查as引导的时间状语从句。as当……时；if如果；for因为；since既然，自从。空处前后所描述的事情同时发生，因此空处表示“当……时候”，用as引导时间状语从句。故选A。 27．Benny saw the client sitting at the desk ________ she walked into the bank. A．because B．although C．as D．until 【答案】C 【详解】句意：当Benny走进银行时，她看见客户坐在办公桌前。 考查连词的词义辨析。because因为；although尽管；as当……时；until直到。分析句意，此处表示“当她走进银行时”看到，用as引导时间状语从句。故选C。 28．Our life will get more modern ________ science and technology develop. A．as B．before C．if D．though 【答案】A 【详解】句意：随着科学技术的发展，我们的生活将变得更加现代化。 考查连词辨析。as随着；before在……之前；if如果；though虽然。根据“Our life will get more modern…science and technology develop.”可知，此处指随着科学技术的发展，我们的生活将变得更加现代化，应用as引导时间状语从句。故选A。 29．The wind power of our country develops more quickly ________ we push for green energy. A．though B．before C．as D．until 【答案】C 【详解】句意：随着我们推动绿色能源发展，我国的风力发电发展得更快了。 考查连词辨析。though虽然；before在……之前；as随着；until直到……为止。根据“The wind power of our country develops more quickly...we push for green energy.”可知，as符合语境，引导时间状语从句，表示“随着我们推动绿色能源发展，我国的风力发电发展得更快了”。故选C。 30．________ the bad man was leaving, the police came and caught him. A．So B．If C．But D．As 【答案】D 【详解】句意：当这个坏人正要离开时，警察来了并抓住了他。 考查连词辨析。So因此；If如果；But但是；As当……时。根据“the bad man was leaving, the police came and caught him.”可知，此处描述这个坏人要离开时被警察抓住了，用as引导时间状语从句。故选D。 题型四：before/after引导时间状语从句 31．—I missed the live-broadcast of the Shenzhou-20 launch. —What a pity! It may be a long time ________ you get another exciting moment. A．since B．after C．until D．before 【答案】D 【详解】句意：——我错过了神舟二十号发射的直播。——太可惜了！可能要过很长时间，你才能再遇到这样令人激动的时刻。 考查连词辨析。since自从；after之后；until直到；before之前。“It be+时间段+before...”是固定句型，意为“要过……时间才……”，放入句中表示“要过很长时间，你才会再遇到另一个激动时刻”符合题意。故选D。 32．—Daniel made a serious mistake, but he took action to change that ________ it got worse. —Luckily, he didn’t cause any loss. A．when B．after C．until D．before 【答案】D 【详解】句意：——丹尼尔犯了一个严重的错误，但他在事情变得更糟之前采取了行动。——幸运的是，他没有造成任何损失。 考查连词辨析。when当……时候；after在……之后；until直到；before在……之前。根据“Luckily, he didn‘t cause any loss.”可知，丹尼尔没有造成损失，所以是在事情更糟糕之前采取了行动，故选D。 33．I’m going to do some research into traditional music for my report ________ I write on it. A．though B．before C．as if D．unless 【答案】B 【详解】句意：在撰写报告之前，我将进行一些关于传统音乐的研究。    考查连词辨析。though尽管；before在……之前；as if好像；unless除非。根据语境可知，“做研究”应发生在“撰写报告”之前，强调时间上的先后关系。before符合句意。故选B。 34．She felt more confident _______ she won the speaking competition. A．until B．while C．before D．after 【答案】D 【详解】句意：她在演讲比赛中获胜后更加自信了。考查连词。A. until直到；B. while当…时候；C. before在…之前；D. after在…之后。根据She felt more confident ___ she won the speaking competition.可知，应该是她在演讲比赛中获胜后更加自信了，故答案选D。 35．They will not finish the work on time ________they work together. A．while B．unless C．after D．because 【答案】B 【详解】句意：除非他们一起工作，不然他们不会准时完成工作。 考查从属连词辨析。while当……时候；unless除非；after在……之后；because因为。根据“They will not finish the work on time”及“they work together.”可知，他们不会准时完成工作和他们一起工作，表条件，用unless除非；除非他们一起工作，不然他们不会准时完成工作，故选B。 36．“After our ship crashed against the rocks, I swam as far as I could.” The underlined word “After” is used to_________. A．connect ideas B．give examples C．show time D．add more information 【答案】C 【详解】句意：我们的船撞上礁石后，我游得尽可能远。 考查连词的用法。connect ideas有关联想法；give examples举例；show time出示时间；add more information添加更多信息；after 表示时间连词，在……之后。故选C。 37．—Because of the Double Reduction Policy (双减政策), students go home ________ they finish their homework at school. —Sure. As a parent of a Grade 9 student, I don’t feel so tired as before. A．before B．while C．since D．after 【答案】D 【详解】句意：——由于双减政策，学生在学校完成作业后回家。——当然。作为一名九年级学生的家长，我不再像以前那么累了。 考查连词辨析。before在……之前；while当……时候；since自从，既然；after在……之后。根据常识以及“students go home...they finish their homework at school”可知，学生在学校写完作业之后回家。故选D。 38．—What do you usually do ________ you finish your homework? —I usually go out for a walk with my parents or read the books that I like. A．since B．after C．until D．while 【答案】B 【详解】句意：——你做完作业后通常做什么？——我通常和我的父母出去散步或读我喜欢的书。 考查连词辨析。since自从；after在……之后；until直到；while在……期间。根据“What do you usually do…you finish your homework?”可知，此处表示“做完家庭作业之后”，故选B。 39．Read the instructions carefully before you ________ the machine. A．use B．are using C．used D．have used 【答案】A 【详解】句意：使用机器前请仔细阅读使用说明。 考查时态。根据“Read the instructions carefully before you”可知，主句是祈使句，空处位于before引导的时间状语从句中，应用一般现在时，主语是you，use符合句意，故选A。 40．We’d better take action to solve a problem ______ it gets worse. A．before B．after C．until D．since 【答案】A 【详解】句意：我们最好在问题变得更糟之前采取行动解决它。 考查连词辨析。before在……之前；after在……之后；until直到；since自从。根据句意可知，采取行动要在变得糟糕之前，before符合题意。故选A。 题型五：till/until引导时间状语从句 41．We don’t know the love of our parents _________ we become parents ourselves one day. A．after B．when C．since D．until 【答案】D 【详解】句意：直到有一天我们自己成为父母，我们才知道父母的爱。 考查连词辨析。after在……之后；when当……时；since自从；until直到。根据“We don’t know the love of our parents...we become parents ourselves one day.”可知，此处考查固定搭配：not...until“直到……才”。故选D。 42．—You look so tired. What’s wrong? —I didn’t go to bed ________ I finish watching the football match. A．until B．if C．though D．because 【答案】A 【详解】句意：——你看起来很累。怎么了？——直到看完这场足球比赛我才上床睡觉。 考查连词辨析。until直到；if如果；though尽管；because因为。根据“I didn’t go to bed…I finish watching the football match.”可知，此处表示“直到看完这场足球比赛才上床睡觉”，until符合题意。故选A。 43．Tom kept working on the math problem ________ he found the answer. A．when B．after C．unless D．until 【答案】D 【详解】句意：汤姆一直努力做这道数学题，直到他找到答案。 考查连词辨析。when当……时候；after在……之后；unless除非；until直到……为止。根据“Tom kept working on the math problem”以及“he found the answer.”可知，此处表达“一直做题，直到找到答案”，应用until引导时间状语从句。故选D。 44．—When should I return the book? —Just take your time. You can keep it ________ you finish reading it. A．since B．if C．while D．till 【答案】D 【详解】句意：——我什么时候还书？——慢慢来。你可以一直读到读完。 考查连词辨析。since自从；if如果；while当；till直到。根据“keep it...you finish reading it”可知一直保留这本书，直到读完。故选D。 45．—Mum, when can you take me out for the shopping? —Not ________ your father arrives home. A．before B．since C．after D．until 【答案】D 【详解】句意：——妈妈，你什么时候能带我去购物呢？——直到你父亲回家为止。 考查连词辨析。before在……之前；since自从；after在……之后；until直到。根据“Not ... your father arrives home.”可知，是not until“直到……才”的结构，表示直到爸爸回家才能去购物。故选D。 46．The baby ________ stop crying ________ its mother came back. A．doesn’t; until B．didn’t; because C．didn’t; until D．doesn’t; because 【答案】C 【详解】句意：直到妈妈回来，婴儿才停止哭泣。 考查时态与连词辨析。doesn’t用于一般现在时实义动词前；didn’t用于一般过去时实义动词前；until直到；because因为。根据“came back”可知，此处应用一般过去时，因此排除A、D；结合语境可知，此处表示直到妈妈回来才停止哭泣，not … until“直到……才”。故选C。 47．—Excuse me, is it my turn to enter the doctor’s office now? —Not yet. Please wait here until your name ________. A．calls B．will call C．is called D．is calling 【答案】C 【详解】句意：——对不起，现在轮到我进医生的办公室了吗？——还没有。请在这里等候，直到有人叫你的名字。 考查时态语态。句子主语“your name”与动词call之间是动宾关系，应用被动语态，此处是until引导的时间状语从句，时态遵循“主将从现”的原则，空处所在的从句应用一般现在时的被动语态，故选C。 48．In Chinese culture, the young won’t start dinner _______ the elders (长辈) take their seats. A．when B．until C．if D．so 【答案】B 【详解】句意：在中国文化中，年轻人直到长辈入座后才会开始用餐。    考查连词辨析。when当……时；until直到……才；if如果；so因此。根据“the young won’t start dinner…the elders take their seats”可知，此处强调直到长辈入座后年轻人才开始用餐，not...until...表示“直到……才……”，符合语境。故选B。 49．People did not worry about AI safety ________ Deepseek became popular. A．when B．while C．since D．until 【答案】D 【详解】句意：人们直到Deepseek流行起来，才担心人工智能安全问题。 考查连词的用法。when当……时；while当……时（强调前后动作同时进行）；since自从，因为；until直到。根据句子逻辑，“not...until...”是固定搭配，意为“直到……才……”，此句表达人们在Deepseek流行前不担心AI安全，流行后才担心，符合“not...until...”结构。故选D。 50．I didn’t go to bed ________ I finished reading this novel. A．until B．if C．because D．when 【答案】A 【详解】句意：直到读完这本小说，我才上床睡觉。 考查连词辨析。until直到；if如果；because因为；when当……时。根据“I didn’t go to bed…I finished reading this novel.”可知，此处指直到读完小说，我才上床睡觉。not…until…“直到……才……”。故选A。 题型六：一......就......表达法 51．Tony will begin to do his homework as soon as he ________ home. A．got B．gets C．is getting D．has got 【答案】B 【详解】句意：托尼一到家就会开始做家庭作业。 考查时间状语从句的时态。got一般过去时在；gets一般现在时第三人称单数形式；is getting现在进行时；has got现在完成时。根据“Tony will begin to do his homework as soon as he ... home.”，“as soon as” 引导的时间状语从句中，若主句为一般将来时，从句需用一般现在时表示将来动作。故选B。 52．I will return it to the library ________ I finish reading Little Women. A．so that B．although C．as soon as D．unless 【答案】C 【详解】句意：我一读完《小妇人》就会把它还给图书馆。 考查连词辨析。so that以便；although虽然；as soon as一……就；unless除非。根据“I finish reading Little Women”可知，此处强调读完书后立即归还，用as soon as引导时间状语从句。故选C。 53．I called my parents ________ I got to my grandparents’ home. That was because I didn’t want them to worry about me. A．as soon as B．though C．so that D．unless 【答案】A 【详解】句意：我一到我祖父母家就给我父母打了电话。那是因为我不想让他们为我担心。 考查连词辨析。as soon as一……就……；though虽然；so that以便；unless除非。根据“I got to my grandparents’ home.”可知，打电话的动作与到达祖父母家的时间紧密衔接，强调到达后立即打电话，用as soon as引导时间状语从句。故选A。 54．—When will you go to see your grandpa? —I’ll see him ________ I get off the plane. He is waiting for me at the airport. A．as soon as B．as long as C．as far as D．as easily as 【答案】A 【详解】句意：——你将什么时间见到你的祖父？——我一下飞机就将见到他。他在机场等着我。 考查连词辨析。as soon as一……就，引导时间状语从句；as long as只要，引导条件状语从句；as far as就……而言，引导强调程度或范围的从句；as easily as像……一样简单，强调程度上的相同。根据“When will you go to see your grandpa?”可知，此处表示时间见到祖父的时间，所以用as soon as引导时间状语从句，故选A。 55．— Jack, have you done the survey? — Not yet. I am in New York now. I’ll start it ________ I come back. A．whenever B．as soon as C．before D．after 【答案】B 【详解】句意：——杰克，你做过调查了吗？——还没有。我现在在纽约。我一回来，就开始。 考查从属连词辨析。whenever无论何时；as soon as一……就……；before在……之前；after在……之后。根据“I’ll start it as soon as I come back”可知，此处表示一回来就会开始做调查，故用as soon as。故选B。 56．As soon as he ________ back, I’ll tell him when ________ and see him. A．comes, will you come B．will come, do you come C．comes, you will come D．will come, you come 【答案】C 【详解】句意：他一回来，我就会告诉他你什么时候会来见他。 考查时间状语从句和宾语从句。根据“As soon as he...back, I’ll tell him when...and see him.”可知，句中“As soon as he...back”是时间状语从句，遵循“主将从现”原则，需用一般现在时表将来，主语是“he”，是第三人称单数，因此第一空使用“comes”；主句含有“when”引导的宾语从句，“你什么时候会来”是将来的动作，应该使用一般将来时态，并且使用陈述语序（主语+谓语），因此第二空使用“you will come”。故选C。 57．—Could you please help me give the book back to Susan? —Sure. I will do that ________ I see her this afternoon. A．as soon as B．as many as C．as much as D．as good as 【答案】A 【详解】句意：——你能帮我把这本书还给苏珊吗？——当然。今天下午我一见到她就会那么做。 考查短语辨析。as soon as一……就……；as many as和……一样多（修饰可数名词复数）；as much as和……一样多（修饰不可数名词）；as good as和……一样好。根据“Could you please help me give the book back to Susan?”以及“I will do that…I see her this afternoon.”可知，此处指“我”一见到她，就会把书还给她。故选A。 58．—Tom, give the report to Linda, please. —OK, I’ll give it to her ________ she arrives here. A．until B．since C．though D．as soon as 【答案】D 【详解】句意：——汤姆，请把报告给琳达。——好的，她一到这里我就给她。 考查连词辨析。until直到；since自从；though虽然；as soon as一……就……。根据“I’ll give it to her ... she arrives here”可推出是一到这儿就给她，用as soon as引导时间状语从句。故选D。 59．________ the kids walked into Jilin Science and Technology Museum, they headed straight for the robot area. A．Unless B．Although C．As soon as D．Until 【答案】C 【详解】句意：孩子们一走进吉林科技馆，就直奔机器人展区。 考查连词。Unless除非；Although尽管；As soon as一……就……；Until直到。根据“the kids walked into Jilin Science and Technology Museum, they headed straight for the robot area.”可知孩子们一走进科技馆，就去机器人展区，用as soon as引导时间状语从句。故选C。 60．Nancy called her parents ________ she knew the good results of her final tests. A．as soon as B．so that C．as long as D．because 【答案】A 【详解】句意：南希一知道期末考试的好成绩就给父母打了电话。 考查连词辨析。as soon as一……就；so that以便；as long as只要；because因为。根据“called her parents … of her final tests.”可知，一知道期末考试的好成绩就给父母打了电话，用as soon as引导时间状语从句。故选A。 题型七：综合提升巩固练 61．For your safety, you mustn’t get close to the train ________ it stops. A．while B．when C．since D．until 【答案】D 【详解】句意：为了您的安全，在火车停下来之前，您千万不要靠近它。 考查连词辨析。while当……时；when当……时；since自从；until直到。根据“you mustn’t get close to the train … it stops”可知，此处用not…until表示“直到……才”，故选D。 62．________ astronauts go on spacewalks, they wear spacesuits to keep themselves safe. A．Though B．Till C．When D．Unless 【答案】C 【详解】句意：当宇航员进行太空行走时，他们会穿着宇航服来保护自己的安全。 考查连词辨析。Though虽然；Till直到；When当……时候；Unless除非。根据“astronauts go on spacewalks, they wear spacesuits to keep themselves safe”可知当宇航员太空行走时，他们会穿宇航服，用when引导时间状语从句。故选C。 63．Let’s wait ________ the rain stops. A．so B．while C．since D．until 【答案】D 【详解】句意：让我们等雨停。 考查连词辨析。so因此；while然而；since自从；until直到……。根据“Let’s wait … the rain stops.”可知，此处指等着直到雨停，用until引导时间状语从句。故选D。 64．You will never truly understand your parents’ great love ______ you grow up. A．until B．if C．since D．as 【答案】A 【详解】句意：直到你长大，你才会真正理解父母之爱有多伟大。 考查连词辨析。until直到；if如果；since既然；as随着。根据“You will never truly understand your parents’ great love…you grow up”可知，直到长大才会理解父母的爱，故选A。 65．—Mom, shall we have supper now? —Oh, we won’t have supper ________ your dad comes back. A．until B．since C．while D．after 【答案】A 【详解】句意：——妈妈，我们现在吃晚饭好吗？——哦，直到你爸爸回来才能吃。 考查连词辨析。until直到；since自从；while在……期间；after在……之后。根据“Oh, we won’t have it...your dad comes back.”可知，此处表示直到爸爸回来才吃饭，not...until表示“直到……才”，until引导时间状语从句。故选A。 66．Jack has learned more about teamwork (团队合作) _______ he joined the soccer team. A．until B．since C．while D．though 【答案】B 【详解】句意：自从杰克加入足球队以来，他对团队合作有了更多的了解。 考查从属连词辨析。until直到；since自从；while当……时候；though尽管，根据主句时态是现在完成时，从句时态是一般过去时，以及语境可知，应该是since引导的时间状语从句，故选B。 67．—I’m afraid the meeting has begun. —Don’t worry. It ________ until the bell ________. A．will begin; rings B．doesn’t begin; will ring C．won’t begin; will ring D．won’t begin; rings 【答案】D 【详解】句意：——恐怕会议已经开始了。——别担心，直到铃声响了，会议才开始。 考查时间状语从句的用法。not...until...意为“直到……才……”，until引导的时间状语从句，遵循“主将从现”的原则,即主句用一般将来时，从句用一般现在时。故选D。 68．—Did you catch the early bus this morning? —Yes. The bus started to move ________ I got on it. A．as soon as B．as if C．though D．before 【答案】A 【详解】句意：——今天早上你赶上早班车了吗？——是的。我一上车，公交车就开动了。 考查连词辨析。as soon as一……就；as if似乎；though尽管；before在……之前；根据答语“Yes. The bus started to move…I got on it.”及选项可知，是的。我一上车，公交车就开动了。此处使用as soon as，表示“一……就”符合语境。故选A。 69．Many students didn’t realize (意识到) the importance of study _______ they left school. A．when B．after C．as D．until 【答案】D 【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。when当……时候；after在……之后；as当……时候；until直到。根据“Many students didn’t realize (意识到) the importance of study…they left school.”可知，许多学生没有意识到学习的重要性，直到他们离开学校；not…until…表示“直到……才”。故选D 70．—Can you tell me when you are going to arrive there? —I’m not sure. But I’ll ring you up as soon as I ________ there tomorrow. A．arrive B．arrived C．will arrive D．am going to arrive 【答案】A 【详解】句意：——你能告诉我你什么时候到那里吗？——我不确定。但我明天一到那儿就给你打电话。 考查动词时态。as soon as引导的时间状语从句表将来的事时，这时主句用一般将来时，从句用一般现在，即：主将从现。本句主句是一般将来时，从句用一般现在时，主语是I，动词用原形。故选A。 71．They have been friends ________ they first met. A．since B．while C．before D．after 【答案】A 【详解】句意：他们自从第一次见面就一直是朋友。 考查连词辨析。since自从；while当……时；before在……之前；after在……之后。根据“They have been friends … they first met”可知，从句用一般过去时，主句用现在完成时，用since引导时间状语从句，故选A。 72．—Peter, how long have you been in the ice skating club? —Not long. I didn’t join the club ________ I enjoyed the 2022 Beijing Winter Olympics. A．when B．until C．unless D．after 【答案】B 【详解】句意：——彼得，你在滑冰俱乐部多久了？——时间不长。直到我欣赏了2022年北京冬奥会，我才加入俱乐部。 考查连词辨析。when当；until直到；unless除非；after在……之后。根据“Not long. I didn’t join the club...I enjoyed the 2022 Beijing Winter Olympics”可知加入俱乐部的时间不长，直到欣赏了冬奥会才加入，此处是结构“not...until”，意为“直到……才”。故选B。 73．Before you get off the bus, you should wait ________ it has stopped. A．until B．but C．because D．so 【答案】A 【详解】句意：你应该等到车停了再下车。 考查连词辨析。until直到；but但是；because因为；so因此，所以。根据“Before you get off the bus, you should wait...it has stopped.”可知，应该等到车停了再下车，用until引导时间状语从句，故选A。 74．To avoid the virus (病毒), we should wash hands more carefully ________ we have meals. A．so B．before C．because D．although 【答案】B 【详解】句意：为了避免病毒，我们应该在吃饭前更仔细地洗手。 考查连词辨析。so因此；before在……之前；because因为；although虽然。根据“we should wash hands more carefully...we have meals”可知，饭前要洗手，故选B。 75．Teenagers should do some housework ________ they finish their homework. A．until B．but C．after D．unless 【答案】C 【详解】句意：青少年应该在完成家庭作业之后做一些家务活。 考查连词。until直到；but但是；after在……之后；unless除非。根据“do some housework”及“they finish their homework”可知表达做完家庭作业之后做家务活，用连词“after”引导时间状语从句。故选C。 76．— Would you please give this newly-published novel to Jack?   — Certainly, ________ he comes back. A．before B．unless C．until D．as soon as 【答案】D 【详解】句意：——请你把这本新出版的小说给杰克好吗？——当然，他一回来就给他。 考查连词辨析。before在……之前；unless除非；until直到；as soon as—……就……。根据题干中Certainly可知，说话人同意对方的请求，杰克一回来，他就会把这本新出版的小说给他，所以此处应用as soon as，引导时间状语从句。故选D。 77．I didn’t understand my mom’s love ________ we had a long talk. A．until B．if C．since D．because 【答案】A 【详解】句意：直到我们进行了一次长谈，我才明白了妈妈的爱。 考查连词辨析。until直到；if如果；since自从；because因为。根据“I didn’t understand my mom’s love … we had a long talk”可知，此处用not…until表示“直到……才”，故选A。 78．Jenny didn’t go to bed _______ her mother came home last night. A．as soon as B．if C．while D．until 【答案】D 【详解】句意：昨天晚上珍妮直到妈妈回家才睡觉。 考查连词辨析。as soon as一……就；if如果；while当；until直到。根据“Jenny didn’t go to bed...her mother came home”可知是直到妈妈回来才睡觉，not...until“直到……才”。故选D。 79．Tom didn’t go to bed ________ his mother came back last night. A．until B．if C．because D．unless 【答案】A 【详解】句意：汤姆直到他妈妈昨晚回来才上床睡觉。 考查连词辨析。until直到；if如果；because因为；unless除非。分析句子可知，此处指汤姆直到妈妈回来才上床睡觉。not…until…“直到……才……”。故选A。 80．They were playing soccer on the playground ________ the storm came. A．as soon as B．as long as C．when D．while 【答案】C 【详解】句意：暴风雨来临时，他们正在操场上踢足球。 考查时间状语从句。as soon as一……就……；as long as只要；when当……时，表示主句的动作和从句的动作同时或先后发生，when引导的从句谓语动词是短暂性或延续性动词；while与……同时，表示两个动作同时进行，while引导的从句，谓语动词是延续性动词。根据题干从句 “ the storm came.”可知谓语动词是短暂性动词，结合句意，所以用when。故选C。 2 同步新教材，周周有练习，月月有重点！ 1 同步新教材，周周有练习，月月有重点！ 学科网（北京）股份有限公司 $$