内容正文:
高中英语状语从句考点解读和专练精讲(原卷版)
状语从句考点解读
一、基本概念
状语从句:在复合句中充当状语的从句,依附于主句,用来修饰主句中的谓语动词、形容词、副词或整个主句,说明动作发生的时间、地点、原因、条件、目的、结果、让步、方式、比较等情况。
核心特点:
1. 从句不能单独成句,必须依附主句存在,自身不能表达完整语义;
2. 由从属连词引导,从属连词既起连接主句和从句的作用,又能体现从句与主句的逻辑关系(如时间、原因、条件等);
3. 状语从句可位于主句前、主句后或主句中间,位于主句前时,常用逗号与主句隔开;
4. 主句与状语从句时态需呼应(如时间、条件状语从句中,主句用将来时,从句用一般现在时表将来)。
核心组成:从属连词 + 状语从句 + 主句(或 主句 + 从属连词 + 状语从句)
九大类型(高考核心,按逻辑关系分9类):
根据从句表达的逻辑关系,状语从句主要分为以下9类,其中时间、条件、原因、让步、结果、目的状语从句为高考高频考点,需重点掌握:
1. 时间状语从句:表动作发生的时间,引导词如when, while, as, before, after, until, since, as soon as等;
2. 地点状语从句:表动作发生的地点,引导词如where, wherever等;
3. 原因状语从句:表动作发生的原因,引导词如because, since, as, now that等;
4. 条件状语从句:表动作发生的条件,引导词如if, unless, as long as, on condition that等;
5. 目的状语从句:表动作的目的,引导词如so that, in order that, in case等;
6. 结果状语从句:表动作产生的结果,引导词如so...that..., such...that...等;
7. 让步状语从句:表与主句相反的让步(“虽然、尽管”),引导词如though, although, even if, even though, whatever等;
8. 方式状语从句:表动作的方式,引导词如as, as if, as though等;
9. 比较状语从句:表两者之间的比较,引导词如than, as...as..., not so/as...as...等。
二、核心考点:各类状语从句的用法(高考重中之重)
(一)时间状语从句(高频考点)
核心功能:说明主句动作发生的时间,从句时态需与主句呼应,重点区分引导词的用法差异。
1. 常用引导词及用法辨析
when:含义“当……的时候”,既可引导短暂性动作(瞬间动作),也可引导持续性动作;从句谓语动词可与主句谓语动词同时发生,也可先后发生。
例句:When I got home, my mother was cooking.(短暂性动作,先后发生);I was reading when he came in.(同时发生)
while:含义“当……的时候”,只能引导持续性动作(从句谓语动词为延续性动词或进行时);强调主句与从句动作同时发生
例句:While we were talking, the teacher came into the classroom.(同时发生,从句为进行时)
易错点:while不能引导短暂性动作,如“While he arrived”为错误表达,需改为“When he arrived”。
as:含义“当……的时候”“一边……一边……”,强调主句与从句动作同步进行(伴随发生),语气比while更强调“同时性”。
例句:She sang as she walked.(一边走路一边唱歌,同步进行)
before/after:含义“在……之前/之后”,明确表示动作的先后顺序,时态需体现先后关系。
例句:I will finish my homework before I watch TV.(先完成作业,再看电视);After he finished his work, he went home.(先完成工作,再回家)
until/till:含义“直到……为止”,两者用法基本一致(till更口语化,until可用于句首,till不可);分两种情况:
① 主句为肯定句,主句谓语动词为持续性动词,表“动作持续到从句动作发生”;
例句:He waited until his mother came back.(他一直等,直到妈妈回来)
② 主句为否定句(not...until...),主句谓语动词为短暂性动词,表“直到从句动作发生,主句动作才发生”(高频易错点);
例句:I didn’t go to bed until I finished my homework.(直到完成作业,我才去睡觉)
since:含义“自从……以来”,从句常用一般过去时,主句常用现在完成时;since引导的从句可位于句首或句末。
例句:Since he came to this school, he has made many friends.(自从他来到这所学校,已经交了很多朋友)
as soon as:含义“一……就……”,表两个动作先后发生,强调“动作的即时性”;主句用将来时,从句用一般现在时表将来(主将从现)。
例句:As soon as I get the news, I will tell you.(我一得到消息,就告诉你)
2. 关键注意点(易错点)
- 时间状语从句中,“主将从现”原则:主句用一般将来时、情态动词或祈使句,从句用一般现在时表将来(适用于when, while, as, before, after, until, as soon as等引导的从句);
- while引导的从句,谓语动词必须是延续性的(如work, study, wait等),短暂性动词(如arrive, leave, die等)需用when引导;
- not...until...的同义改写:可改为It is not until...that...(强调句型),如I didn’t go to bed until 10 o’clock. → It is not until 10 o’clock that I went to bed.
(二)条件状语从句(高频考点)
核心功能:说明主句动作发生的条件,分为真实条件句和虚拟条件句(高中重点为真实条件句,虚拟条件句为拓展考点)。
1. 常用引导词及用法
if:含义“如果”,引导真实条件句,表“可能发生的条件”;遵循“主将从现”原则。
例句:If it rains tomorrow, we will cancel the picnic.(如果明天下雨,我们就取消野餐)
unless:含义“除非”“如果不”,相当于if not,语气比if更强,否定条件;注意unless本身含否定意义,不可再与not连用(易错点)。
例句:Unless you work hard, you will not pass the exam.(除非你努力学习,否则你不会通过考试)→ 同义句:If you don’t work hard, you will not pass the exam.
as long as/so long as:含义“只要”,表“充分条件”,语气比if更强调“条件的唯一性”。
例句:As long as you keep practicing, you will improve your English.(只要你坚持练习,你的英语就会进步)
on condition that:含义“在……条件下”,表“有条件的承诺”,语气更正式,多用于书面语。
例句:I will help you on condition that you finish your homework first.(我会帮你,条件是你先完成作业)
2. 关键注意点(易错点)
真实条件句遵循“主将从现”原则:主句用将来时、情态动词或祈使句,从句用一般现在时表将来;
unless本身含否定意义,不可与not连用,如“Unless you don’t work hard”为错误表达;
if引导的条件状语从句,可位于主句前(用逗号隔开)或主句后,位于句首时,逗号不可省略。
(三)原因状语从句(高频考点)
核心功能:说明主句动作发生的原因或理由,引导词的语气强弱不同,用法有明显区别。
1. 常用引导词及用法辨析(语气从强到弱)
- because:含义“因为”,语气最强,表“直接原因”,回答why的提问;可位于主句前或后,位于句前时用逗号隔开。
例句:He didn’t go to school because he was ill.(他没去上学,因为他生病了);Why didn’t he go to school? Because he was ill.
since:含义“既然”“由于”,语气比because弱,表“已知的、显而易见的原因”,引导的从句通常位于句首
例句:Since you are tired, you can have a rest.(既然你累了,就可以休息一下)
as:含义“因为”“由于”,语气最弱,表“附带的、次要的原因”,引导的从句通常位于句首,且句子较短。
例句:As it was late, we went home.(因为天晚了,我们就回家了)
now that:含义“既然”,与since用法相近,表“已知事实”,语气比since更口语化,可替换since。
例句:Now that you know the truth, I don’t need to explain again.(既然你知道真相了,我就不用再解释了)
2. 关键注意点(易错点)
because不可与so连用(中文“因为……所以……”,英文中只能用一个连词),如“Because he was ill, so he didn’t go to school”为错误表达;
because引导的从句可用于强调句型(It is because...that...),而since, as不可,如It is because he was ill that he didn’t go to school.(正确);
回答why提问时,只能用because,不能用since, as。
(四)让步状语从句(高频考点)
核心功能:表“虽然、尽管”,引导与主句语义相反的情况,即“让步”,主句与从句语义形成对比。
1. 常用引导词及用法辨析
- though/although:含义“虽然、尽管”,两者用法基本一致,可互换;though更口语化,although更正式;引导的从句可位于句首或句末,位于句首时用逗号隔开。
易错点:though/although不可与but连用(中文“虽然……但是……”,英文中只能用一个连词);
例句:Though he is young, he knows a lot.(虽然他年纪小,但他懂得很多)→ 不可说“Though he is young, but he knows a lot.”
even if/even though:含义“即使、尽管”,语气比though/although更强,表“假设性的让步”(即使某种情况发生,主句动作依然成立)。
例句:Even if it rains heavily, we will go to school on time.(即使下大雨,我们也会按时上学)
whatever/whichever/whoever/whenever/wherever/however:含义“无论……”,表“无条件让步”,引导的从句可位于句首或句末,语气强烈。
例句:Whatever you do, I will support you.(无论你做什么,我都会支持你);However hard he tries, he can’t finish the work on time.(无论他多么努力,都不能按时完成工作)
2. 关键注意点(易错点)
though/although与but不可连用,但可与yet, still连用(表“仍然”),如Though he is ill, yet he goes to school.(正确);
however的用法:后接形容词/副词,不可直接接句子,如However hard it is(正确),However it is hard(错误);
whatever等复合连词,可引导让步状语从句,也可引导名词性从句,需根据句子结构判断(状语从句修饰主句谓语,名词性从句充当句子成分)。
(五)结果状语从句(高频考点)
核心功能:表主句动作产生的结果,分为“如此……以至于……”两种结构,重点区分so和such的用法。
1. 常用引导词及用法(核心:so...that... vs such...that...)
so...that...:so后接形容词/副词,表“如此……以至于……”;
结构:so + 形容词/副词 + that从句;
例句:He is so tall that he can reach the top of the shelf.(他个子这么高,能碰到架子顶部);She runs so fast that no one can catch up with her.(她跑得这么快,没人能追上她)
such...that...:such后接名词短语(形容词+名词),表“如此……以至于……”;
结构:① such + a/an + 形容词 + 可数名词单数 + that从句;② such + 形容词 + 可数名词复数/不可数名词 + that从句;
例句:It is such a beautiful flower that everyone likes it.(这朵花如此漂亮,每个人都喜欢它);They are such kind people that they often help others.(他们是如此善良的人,经常帮助别人)
2. 关键注意点(易错点)
- so与such的辨析:so修饰形容词/副词,such修饰名词短语;易错搭配:so + a/an + 形容词 + 名词 = such + a/an + 形容词 + 名词,如so beautiful a flower = such a beautiful flower;
- 结果状语从句中,that引导的从句为结果,主句与从句之间有明显的“因果关系”;
- 当so/such位于句首时,主句需用部分倒装,如So tall is he that he can reach the top.(正确)。
(六)目的状语从句(高频考点)
核心功能:表主句动作的目的(“为了……”“以便……”),从句中常含有can, could, may, might等情态动词。
1. 常用引导词及用法
so that:含义“为了、以便”,引导目的状语从句,可位于主句后,从句中常含情态动词;
例句:He studies hard so that he can pass the exam.(他努力学习,为了能通过考试)
in order that:含义“为了、以便”,与so that用法一致,语气更正式,可位于主句前或后(位于句前时用逗号隔开);
例句:In order that we can arrive on time, we set off early.(为了能按时到达,我们早早出发了) in case:含义“以防、万一”,表“预防某种情况发生”,引导目的状语从句,从句常用一般现在时表将来;
例句:Take an umbrella in case it rains.(带把伞,以防下雨)
2. 关键注意点(易错点)
so that既可以引导目的状语从句,也可以引导结果状语从句,区分方法:目的从句含情态动词,表“目的”;结果从句无情态动词,表“实际结果”;
例句:He studied hard so that he passed the exam.(结果状语从句,表“实际结果”);He studied hard so that he could pass the exam.(目的状语从句,表“目的”)
in order that可位于句首,so that不可位于句首;
目的状语从句的时态:主句用一般现在时,从句用can/could;主句用一般过去时,从句用could/might。
(七)地点状语从句
核心功能:表主句动作发生的地点,引导词主要为where和wherever,用法较简单。
where:含义“在……的地方”,引导地点状语从句,表“具体的地点”;
例句:Plant trees where there is plenty of sunlight.(在阳光充足的地方种树)
wherever:含义“无论在……地方”,表“任何地点”,语气比where强;
例句:Wherever you go, you should keep our environment clean.(无论你去哪里,都应该保持环境整洁)
易错点:where引导的地点状语从句 vs 定语从句:地点状语从句修饰主句谓语,无先行词;定语从句修饰名词(先行词),有明确的先行词。
例句对比:Where he worked is a small town.(地点状语从句,修饰无,作主句主语);This is the place where he worked.(定语从句,修饰先行词the place)
(八)方式状语从句
核心功能:表主句动作的方式(“像……一样”“仿佛……”),常用引导词为as, as if, as though。
as:含义“像……一样”,表“实际的方式”;
例句:Do as I told you.(按照我告诉你的去做)
as if/as though:含义“仿佛、好像”,表“虚拟的方式”(从句内容与事实不符)或“真实的方式”;
例句:She looks as if she is ill.(真实,她看起来好像生病了);He talks as if he knew everything.(虚拟,他说话的样子好像他什么都知道似的)
(九)比较状语从句
核心功能:表两者之间的比较,常用引导词为than, as...as..., not so/as...as...,重点掌握比较级的用法。
as...as...:含义“和……一样……”,用于同级比较,中间接形容词/副词原级;
例句:He runs as fast as his brother.(他跑得和他哥哥一样快)
not so/as...as...:含义“不如……”,用于同级比较的否定形式,中间接形容词/副词原级;
例句:She is not so tall as her sister.(她不如她姐姐高)
than:含义“比……”,用于比较级,从句中常省略与主句重复的成分;
例句:He is taller than I (am).(他比我高);She studies harder than her classmates (do).(她比她的同学学习更努力)
易错点:比较状语从句中,than后的主语需用主格(如I, he, she),口语中可省略be动词/助动词;比较的对象需一致(如人与人比较、物与物比较)。
三、必考点:状语从句引导词的辨析与选择(高考核心,规避易错点)
(一)时间状语从句引导词辨析(when vs while vs as)
动作类型:when可接短暂性/持续性动作;while只接持续性动作;as接持续性动作,强调“同步进行”;
时间关系:when表“先后或同时”;while表“同时”;as表“一边……一边……”(同步);
例句对比:
When he arrived, we were having dinner.(短暂性动作,先后);
While we were having dinner, he arrived.(持续性动作,同时);
As we were having dinner, he arrived.(同步进行,一边吃饭一边有人来)
(二)原因状语从句引导词辨析(because vs since vs as)
语气强度:because(最强,直接原因)> since(较强,已知原因)> as(最弱,附带原因);
用法场景:because回答why提问,可用于强调句型;since/as引导的从句多位于句首,表“显而易见的原因”;
例句对比:
— Why are you late? — Because I missed the bus.(回答why,直接原因);
Since you are free, let’s go for a walk.(已知原因,你有空);
As it is raining, we can’t go out.(附带原因,天在下雨)
(三)so...that... vs such...that...(结果状语从句)
核心辨析:修饰对象不同,牢记结构差异:
so + 形容词/副词 + that
She is so happy that she cried.
such + 名词短语 + that
It is such a happy day that she cried.
易错警示:so + a/an + 形容词 + 名词 = such + a/an + 形容词 + 名词,不可混淆搭配,如so a happy day(错误),such happy a day(错误)。
(四)让步状语从句引导词辨析(though/although vs even if/even though)
- though/although:表“事实让步”(让步的情况是真实存在的);
- even if/even though:表“假设让步”(让步的情况是假设的,不一定存在);
例句对比:
Though he is ill, he goes to school.(事实让步,他确实生病了);
Even if he is ill, he will go to school.(假设让步,即使他生病,也会去上学,不一定真的生病)
(五)目的状语从句 vs 结果状语从句(so that的辨析)
目的状语从句:表“目的”,从句含can, could, may, might等情态动词,主句动作是为了实现从句的目的;
结果状语从句:表“实际结果”,从句无情态动词,主句动作自然产生的结果;
例句对比:
He studied hard so that he could pass the exam.(目的,为了通过考试);
He studied hard so that he passed the exam.(结果,努力学习后,真的通过了考试)
四、高考高频固定搭配与易错点
(一)高频固定搭配(高考必背)
1. 时间状语从句:
as soon as... 一……就……(主将从现);
not...until... 直到……才……;
since... 自从……以来(主句现在完成时,从句一般过去时)。
2. 条件状语从句:
if... 如果……(主将从现);
unless... 除非……(= if not);
as long as... 只要……。
3. 结果状语从句:
so + 形容词/副词 + that... 如此……以至于……;
such + a/an + 形容词 + 可数名词单数 + that...;
such + 形容词 + 可数名词复数/不可数名词 + that...。
4. 目的状语从句
so that... 为了……(从句含情态动词);
in order that... 为了……(可位于句首);
in case... 以防……(从句用一般现在时表将来)。
5. 让步状语从句:
though/although... 虽然……(不可与but连用);
even if/even though... 即使……;
whatever/however... 无论……。
(二)易错点总结(必考规避,高频丢分点)
1. 时态呼应:时间、条件、让步状语从句中,“主将从现”原则(主句将来时/情态动词/祈使句,从句一般现在时表将来),不可用将来时;
2. 连词连用禁忌:because与so不可连用、though/although与but不可连用,可与yet/still连用;
3. unless的用法:本身含否定意义,不可与not连用,如“Unless you don’t come”为错误表达;
4. so与such的搭配:so修饰形容词/副词,such修饰名词短语,避免混淆(如so a good book错误,应为such a good book);
5. while的用法:只能引导持续性动作,短暂性动作需用when,如“While he left”错误;
6. so that的辨析:目的从句含情态动词,结果从句无情态动词,不可混淆;
7. 比较状语从句:比较对象需一致,than后接主格(口语可省略be动词/助动词);
8. 地点状语从句与定语从句:地点状语从句无先行词,定语从句有明确先行词(名词)。
五、做题万能三步法
1. 判断是否为状语从句:看从句是否修饰主句的谓语动词、形容词、副词或整个主句,是否表达时间、地点、原因等逻辑关系;
2. 分析逻辑关系:确定从句与主句的逻辑关系(时间、条件、原因、让步等),锁定对应的引导词类别;
3. 结合用法和易错点选择引导词:根据引导词的用法差异(如when vs while)、时态呼应、固定搭配,规避易错点,确定最终答案。
状语从句专练精讲
专项一:单句语法填空
解题提示:每题聚焦1个核心考点,重点考查引导词的选择、时态呼应及易错点规避。
1. ______ he was young, he could play the piano very well.
2. I will call you ______ I arrive in Beijing.
3. He didn’t go to school ______ he was ill.
4. ______ it rains tomorrow, we will stay at home.
5. She studied hard ______ she could pass the exam.
6. He is ______ tall ______ he can reach the top of the shelf.
7. ______ you work hard, you will not pass the exam.
8. I have lived in this city ______ I was born.
9. ______ he is rich, he is not happy.
10. Plant trees ______ there is plenty of sunlight.
11. She talks ______ she knew everything.
12. He runs ______ fast ______ no one can catch up with him.
13. ______ you are free, let’s go for a walk.
14. Take an umbrella ______ it rains.
15. She is not ______ tall ______ her sister.
16. ______ hard he tries, he can’t finish the work on time.
17. I didn’t go to bed ______ I finished my homework.
18. It is ______ a beautiful flower ______ everyone likes it.
19. ______ you do, I will support you.
20. Do ______ I told you.
21. ______ he arrived, we were having dinner.
22. He will go to school ______ he is ill.
23. ______ we can arrive on time depends on the traffic.
24. She cried ______ she was sad.
25. ______ you choose this one or that one, it doesn’t matter.
26. He studied hard ______ he passed the exam.
27. ______ there is a will, there is a way.
28. She looks ______ she is tired.
29. I will help you ______ you finish your homework first.
30. ______ I was walking to school, I met my old friend.
专项二:语法填空
Passage 1:
______1______ we get up early every morning is good for our health. It is important ______2______ we have a healthy lifestyle. ______3______ we exercise every day, we will become stronger. I have kept exercising ______4______ I was 10 years old. ______5______ it is cold outside, I still go for a run.
______6______ we eat healthy food is also important. We should avoid eating junk food ______7______ it is bad for our body. ______8______ we feel hungry, we can eat some fruit. It is such a good habit ______9______ it helps us keep fit. ______10______ we stick to these habits, we will live a long and healthy life.
Passage 2:
______1______ I was a child, my mother often told me stories. She told me that ______2______ we work hard, we will achieve our dreams. ______3______ I grew up, I realized the importance of her words. ______4______ I have a dream, I will try my best to realize it.
______5______ it is difficult to achieve the dream, I will never give up. ______6______ I feel tired, I will think of my mother’s words. ______7______ I succeed one day, I will thank my mother. It is because of her that I have the courage to keep going. ______8______ happens, I will remember her teachings. ______9______ I can make her proud is my biggest wish. ______10______ she is old, she is still the most important person in my life.
Passage 3:
______1______ we go to school every day, we should learn as much as possible. It is a pity ______2______ some students don’t study hard. ______3______ they don’t study hard, they will not pass the exam. ______4______ we study hard, we can get good grades.
Our teachers often tell us that ______5______ we have questions, we should ask them for help. ______6______ we ask questions actively, we can learn better. ______7______ it is late, our teachers are still willing to help us. ______8______ we thank them enough is hard to say. ______9______ we can become excellent students is what our teachers expect. ______10______ we grow up, we will never forget our teachers’ help.
高频核心语法总结(适配高考)
主语从句:从句完整用 That;表 “是否” 用 Whether
让步状语从句:Although/Though(虽然)、Whatever(无论什么)
条件状语从句:If(如果)
时间状语从句:When/As/Since/Before/After
固定句型
It is important/pity/reported that...
such...that... 结果状语从句
原因状语从句:because/since
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高中英语状语从句考点解读和专练精讲(解析版)
状语从句考点解读
一、基本概念
状语从句:在复合句中充当状语的从句,依附于主句,用来修饰主句中的谓语动词、形容词、副词或整个主句,说明动作发生的时间、地点、原因、条件、目的、结果、让步、方式、比较等情况。
核心特点:
1. 从句不能单独成句,必须依附主句存在,自身不能表达完整语义;
2. 由从属连词引导,从属连词既起连接主句和从句的作用,又能体现从句与主句的逻辑关系(如时间、原因、条件等);
3. 状语从句可位于主句前、主句后或主句中间,位于主句前时,常用逗号与主句隔开;
4. 主句与状语从句时态需呼应(如时间、条件状语从句中,主句用将来时,从句用一般现在时表将来)。
核心组成:从属连词 + 状语从句 + 主句(或 主句 + 从属连词 + 状语从句)
九大类型(高考核心,按逻辑关系分9类):
根据从句表达的逻辑关系,状语从句主要分为以下9类,其中时间、条件、原因、让步、结果、目的状语从句为高考高频考点,需重点掌握:
1. 时间状语从句:表动作发生的时间,引导词如when, while, as, before, after, until, since, as soon as等;
2. 地点状语从句:表动作发生的地点,引导词如where, wherever等;
3. 原因状语从句:表动作发生的原因,引导词如because, since, as, now that等;
4. 条件状语从句:表动作发生的条件,引导词如if, unless, as long as, on condition that等;
5. 目的状语从句:表动作的目的,引导词如so that, in order that, in case等;
6. 结果状语从句:表动作产生的结果,引导词如so...that..., such...that...等;
7. 让步状语从句:表与主句相反的让步(“虽然、尽管”),引导词如though, although, even if, even though, whatever等;
8. 方式状语从句:表动作的方式,引导词如as, as if, as though等;
9. 比较状语从句:表两者之间的比较,引导词如than, as...as..., not so/as...as...等。
二、核心考点:各类状语从句的用法(高考重中之重)
(一)时间状语从句(高频考点)
核心功能:说明主句动作发生的时间,从句时态需与主句呼应,重点区分引导词的用法差异。
1. 常用引导词及用法辨析
when:含义“当……的时候”,既可引导短暂性动作(瞬间动作),也可引导持续性动作;从句谓语动词可与主句谓语动词同时发生,也可先后发生。
例句:When I got home, my mother was cooking.(短暂性动作,先后发生);I was reading when he came in.(同时发生)
while:含义“当……的时候”,只能引导持续性动作(从句谓语动词为延续性动词或进行时);强调主句与从句动作同时发生
例句:While we were talking, the teacher came into the classroom.(同时发生,从句为进行时)
易错点:while不能引导短暂性动作,如“While he arrived”为错误表达,需改为“When he arrived”。
as:含义“当……的时候”“一边……一边……”,强调主句与从句动作同步进行(伴随发生),语气比while更强调“同时性”。
例句:She sang as she walked.(一边走路一边唱歌,同步进行)
before/after:含义“在……之前/之后”,明确表示动作的先后顺序,时态需体现先后关系。
例句:I will finish my homework before I watch TV.(先完成作业,再看电视);After he finished his work, he went home.(先完成工作,再回家)
until/till:含义“直到……为止”,两者用法基本一致(till更口语化,until可用于句首,till不可);分两种情况:
① 主句为肯定句,主句谓语动词为持续性动词,表“动作持续到从句动作发生”;
例句:He waited until his mother came back.(他一直等,直到妈妈回来)
② 主句为否定句(not...until...),主句谓语动词为短暂性动词,表“直到从句动作发生,主句动作才发生”(高频易错点);
例句:I didn’t go to bed until I finished my homework.(直到完成作业,我才去睡觉)
since:含义“自从……以来”,从句常用一般过去时,主句常用现在完成时;since引导的从句可位于句首或句末。
例句:Since he came to this school, he has made many friends.(自从他来到这所学校,已经交了很多朋友)
as soon as:含义“一……就……”,表两个动作先后发生,强调“动作的即时性”;主句用将来时,从句用一般现在时表将来(主将从现)。
例句:As soon as I get the news, I will tell you.(我一得到消息,就告诉你)
2. 关键注意点(易错点)
- 时间状语从句中,“主将从现”原则:主句用一般将来时、情态动词或祈使句,从句用一般现在时表将来(适用于when, while, as, before, after, until, as soon as等引导的从句);
- while引导的从句,谓语动词必须是延续性的(如work, study, wait等),短暂性动词(如arrive, leave, die等)需用when引导;
- not...until...的同义改写:可改为It is not until...that...(强调句型),如I didn’t go to bed until 10 o’clock. → It is not until 10 o’clock that I went to bed.
(二)条件状语从句(高频考点)
核心功能:说明主句动作发生的条件,分为真实条件句和虚拟条件句(高中重点为真实条件句,虚拟条件句为拓展考点)。
1. 常用引导词及用法
if:含义“如果”,引导真实条件句,表“可能发生的条件”;遵循“主将从现”原则。
例句:If it rains tomorrow, we will cancel the picnic.(如果明天下雨,我们就取消野餐)
unless:含义“除非”“如果不”,相当于if not,语气比if更强,否定条件;注意unless本身含否定意义,不可再与not连用(易错点)。
例句:Unless you work hard, you will not pass the exam.(除非你努力学习,否则你不会通过考试)→ 同义句:If you don’t work hard, you will not pass the exam.
as long as/so long as:含义“只要”,表“充分条件”,语气比if更强调“条件的唯一性”。
例句:As long as you keep practicing, you will improve your English.(只要你坚持练习,你的英语就会进步)
on condition that:含义“在……条件下”,表“有条件的承诺”,语气更正式,多用于书面语。
例句:I will help you on condition that you finish your homework first.(我会帮你,条件是你先完成作业)
2. 关键注意点(易错点)
真实条件句遵循“主将从现”原则:主句用将来时、情态动词或祈使句,从句用一般现在时表将来;
unless本身含否定意义,不可与not连用,如“Unless you don’t work hard”为错误表达;
if引导的条件状语从句,可位于主句前(用逗号隔开)或主句后,位于句首时,逗号不可省略。
(三)原因状语从句(高频考点)
核心功能:说明主句动作发生的原因或理由,引导词的语气强弱不同,用法有明显区别。
1. 常用引导词及用法辨析(语气从强到弱)
- because:含义“因为”,语气最强,表“直接原因”,回答why的提问;可位于主句前或后,位于句前时用逗号隔开。
例句:He didn’t go to school because he was ill.(他没去上学,因为他生病了);Why didn’t he go to school? Because he was ill.
since:含义“既然”“由于”,语气比because弱,表“已知的、显而易见的原因”,引导的从句通常位于句首
例句:Since you are tired, you can have a rest.(既然你累了,就可以休息一下)
as:含义“因为”“由于”,语气最弱,表“附带的、次要的原因”,引导的从句通常位于句首,且句子较短。
例句:As it was late, we went home.(因为天晚了,我们就回家了)
now that:含义“既然”,与since用法相近,表“已知事实”,语气比since更口语化,可替换since。
例句:Now that you know the truth, I don’t need to explain again.(既然你知道真相了,我就不用再解释了)
2. 关键注意点(易错点)
because不可与so连用(中文“因为……所以……”,英文中只能用一个连词),如“Because he was ill, so he didn’t go to school”为错误表达;
because引导的从句可用于强调句型(It is because...that...),而since, as不可,如It is because he was ill that he didn’t go to school.(正确);
回答why提问时,只能用because,不能用since, as。
(四)让步状语从句(高频考点)
核心功能:表“虽然、尽管”,引导与主句语义相反的情况,即“让步”,主句与从句语义形成对比。
1. 常用引导词及用法辨析
- though/although:含义“虽然、尽管”,两者用法基本一致,可互换;though更口语化,although更正式;引导的从句可位于句首或句末,位于句首时用逗号隔开。
易错点:though/although不可与but连用(中文“虽然……但是……”,英文中只能用一个连词);
例句:Though he is young, he knows a lot.(虽然他年纪小,但他懂得很多)→ 不可说“Though he is young, but he knows a lot.”
even if/even though:含义“即使、尽管”,语气比though/although更强,表“假设性的让步”(即使某种情况发生,主句动作依然成立)。
例句:Even if it rains heavily, we will go to school on time.(即使下大雨,我们也会按时上学)
whatever/whichever/whoever/whenever/wherever/however:含义“无论……”,表“无条件让步”,引导的从句可位于句首或句末,语气强烈。
例句:Whatever you do, I will support you.(无论你做什么,我都会支持你);However hard he tries, he can’t finish the work on time.(无论他多么努力,都不能按时完成工作)
2. 关键注意点(易错点)
though/although与but不可连用,但可与yet, still连用(表“仍然”),如Though he is ill, yet he goes to school.(正确);
however的用法:后接形容词/副词,不可直接接句子,如However hard it is(正确),However it is hard(错误);
whatever等复合连词,可引导让步状语从句,也可引导名词性从句,需根据句子结构判断(状语从句修饰主句谓语,名词性从句充当句子成分)。
(五)结果状语从句(高频考点)
核心功能:表主句动作产生的结果,分为“如此……以至于……”两种结构,重点区分so和such的用法。
1. 常用引导词及用法(核心:so...that... vs such...that...)
so...that...:so后接形容词/副词,表“如此……以至于……”;
结构:so + 形容词/副词 + that从句;
例句:He is so tall that he can reach the top of the shelf.(他个子这么高,能碰到架子顶部);She runs so fast that no one can catch up with her.(她跑得这么快,没人能追上她)
such...that...:such后接名词短语(形容词+名词),表“如此……以至于……”;
结构:① such + a/an + 形容词 + 可数名词单数 + that从句;② such + 形容词 + 可数名词复数/不可数名词 + that从句;
例句:It is such a beautiful flower that everyone likes it.(这朵花如此漂亮,每个人都喜欢它);They are such kind people that they often help others.(他们是如此善良的人,经常帮助别人)
2. 关键注意点(易错点)
- so与such的辨析:so修饰形容词/副词,such修饰名词短语;易错搭配:so + a/an + 形容词 + 名词 = such + a/an + 形容词 + 名词,如so beautiful a flower = such a beautiful flower;
- 结果状语从句中,that引导的从句为结果,主句与从句之间有明显的“因果关系”;
- 当so/such位于句首时,主句需用部分倒装,如So tall is he that he can reach the top.(正确)。
(六)目的状语从句(高频考点)
核心功能:表主句动作的目的(“为了……”“以便……”),从句中常含有can, could, may, might等情态动词。
1. 常用引导词及用法
so that:含义“为了、以便”,引导目的状语从句,可位于主句后,从句中常含情态动词;
例句:He studies hard so that he can pass the exam.(他努力学习,为了能通过考试)
in order that:含义“为了、以便”,与so that用法一致,语气更正式,可位于主句前或后(位于句前时用逗号隔开);
例句:In order that we can arrive on time, we set off early.(为了能按时到达,我们早早出发了) in case:含义“以防、万一”,表“预防某种情况发生”,引导目的状语从句,从句常用一般现在时表将来;
例句:Take an umbrella in case it rains.(带把伞,以防下雨)
2. 关键注意点(易错点)
so that既可以引导目的状语从句,也可以引导结果状语从句,区分方法:目的从句含情态动词,表“目的”;结果从句无情态动词,表“实际结果”;
例句:He studied hard so that he passed the exam.(结果状语从句,表“实际结果”);He studied hard so that he could pass the exam.(目的状语从句,表“目的”)
in order that可位于句首,so that不可位于句首;
目的状语从句的时态:主句用一般现在时,从句用can/could;主句用一般过去时,从句用could/might。
(七)地点状语从句
核心功能:表主句动作发生的地点,引导词主要为where和wherever,用法较简单。
where:含义“在……的地方”,引导地点状语从句,表“具体的地点”;
例句:Plant trees where there is plenty of sunlight.(在阳光充足的地方种树)
wherever:含义“无论在……地方”,表“任何地点”,语气比where强;
例句:Wherever you go, you should keep our environment clean.(无论你去哪里,都应该保持环境整洁)
易错点:where引导的地点状语从句 vs 定语从句:地点状语从句修饰主句谓语,无先行词;定语从句修饰名词(先行词),有明确的先行词。
例句对比:Where he worked is a small town.(地点状语从句,修饰无,作主句主语);This is the place where he worked.(定语从句,修饰先行词the place)
(八)方式状语从句
核心功能:表主句动作的方式(“像……一样”“仿佛……”),常用引导词为as, as if, as though。
as:含义“像……一样”,表“实际的方式”;
例句:Do as I told you.(按照我告诉你的去做)
as if/as though:含义“仿佛、好像”,表“虚拟的方式”(从句内容与事实不符)或“真实的方式”;
例句:She looks as if she is ill.(真实,她看起来好像生病了);He talks as if he knew everything.(虚拟,他说话的样子好像他什么都知道似的)
(九)比较状语从句
核心功能:表两者之间的比较,常用引导词为than, as...as..., not so/as...as...,重点掌握比较级的用法。
as...as...:含义“和……一样……”,用于同级比较,中间接形容词/副词原级;
例句:He runs as fast as his brother.(他跑得和他哥哥一样快)
not so/as...as...:含义“不如……”,用于同级比较的否定形式,中间接形容词/副词原级;
例句:She is not so tall as her sister.(她不如她姐姐高)
than:含义“比……”,用于比较级,从句中常省略与主句重复的成分;
例句:He is taller than I (am).(他比我高);She studies harder than her classmates (do).(她比她的同学学习更努力)
易错点:比较状语从句中,than后的主语需用主格(如I, he, she),口语中可省略be动词/助动词;比较的对象需一致(如人与人比较、物与物比较)。
三、必考点:状语从句引导词的辨析与选择(高考核心,规避易错点)
(一)时间状语从句引导词辨析(when vs while vs as)
动作类型:when可接短暂性/持续性动作;while只接持续性动作;as接持续性动作,强调“同步进行”;
时间关系:when表“先后或同时”;while表“同时”;as表“一边……一边……”(同步);
例句对比:
When he arrived, we were having dinner.(短暂性动作,先后);
While we were having dinner, he arrived.(持续性动作,同时);
As we were having dinner, he arrived.(同步进行,一边吃饭一边有人来)
(二)原因状语从句引导词辨析(because vs since vs as)
语气强度:because(最强,直接原因)> since(较强,已知原因)> as(最弱,附带原因);
用法场景:because回答why提问,可用于强调句型;since/as引导的从句多位于句首,表“显而易见的原因”;
例句对比:
— Why are you late? — Because I missed the bus.(回答why,直接原因);
Since you are free, let’s go for a walk.(已知原因,你有空);
As it is raining, we can’t go out.(附带原因,天在下雨)
(三)so...that... vs such...that...(结果状语从句)
核心辨析:修饰对象不同,牢记结构差异:
so + 形容词/副词 + that
She is so happy that she cried.
such + 名词短语 + that
It is such a happy day that she cried.
易错警示:so + a/an + 形容词 + 名词 = such + a/an + 形容词 + 名词,不可混淆搭配,如so a happy day(错误),such happy a day(错误)。
(四)让步状语从句引导词辨析(though/although vs even if/even though)
- though/although:表“事实让步”(让步的情况是真实存在的);
- even if/even though:表“假设让步”(让步的情况是假设的,不一定存在);
例句对比:
Though he is ill, he goes to school.(事实让步,他确实生病了);
Even if he is ill, he will go to school.(假设让步,即使他生病,也会去上学,不一定真的生病)
(五)目的状语从句 vs 结果状语从句(so that的辨析)
目的状语从句:表“目的”,从句含can, could, may, might等情态动词,主句动作是为了实现从句的目的;
结果状语从句:表“实际结果”,从句无情态动词,主句动作自然产生的结果;
例句对比:
He studied hard so that he could pass the exam.(目的,为了通过考试);
He studied hard so that he passed the exam.(结果,努力学习后,真的通过了考试)
四、高考高频固定搭配与易错点
(一)高频固定搭配(高考必背)
1. 时间状语从句:
as soon as... 一……就……(主将从现);
not...until... 直到……才……;
since... 自从……以来(主句现在完成时,从句一般过去时)。
2. 条件状语从句:
if... 如果……(主将从现);
unless... 除非……(= if not);
as long as... 只要……。
3. 结果状语从句:
so + 形容词/副词 + that... 如此……以至于……;
such + a/an + 形容词 + 可数名词单数 + that...;
such + 形容词 + 可数名词复数/不可数名词 + that...。
4. 目的状语从句
so that... 为了……(从句含情态动词);
in order that... 为了……(可位于句首);
in case... 以防……(从句用一般现在时表将来)。
5. 让步状语从句:
though/although... 虽然……(不可与but连用);
even if/even though... 即使……;
whatever/however... 无论……。
(二)易错点总结(必考规避,高频丢分点)
1. 时态呼应:时间、条件、让步状语从句中,“主将从现”原则(主句将来时/情态动词/祈使句,从句一般现在时表将来),不可用将来时;
2. 连词连用禁忌:because与so不可连用、though/although与but不可连用,可与yet/still连用;
3. unless的用法:本身含否定意义,不可与not连用,如“Unless you don’t come”为错误表达;
4. so与such的搭配:so修饰形容词/副词,such修饰名词短语,避免混淆(如so a good book错误,应为such a good book);
5. while的用法:只能引导持续性动作,短暂性动作需用when,如“While he left”错误;
6. so that的辨析:目的从句含情态动词,结果从句无情态动词,不可混淆;
7. 比较状语从句:比较对象需一致,than后接主格(口语可省略be动词/助动词);
8. 地点状语从句与定语从句:地点状语从句无先行词,定语从句有明确先行词(名词)。
五、做题万能三步法
1. 判断是否为状语从句:看从句是否修饰主句的谓语动词、形容词、副词或整个主句,是否表达时间、地点、原因等逻辑关系;
2. 分析逻辑关系:确定从句与主句的逻辑关系(时间、条件、原因、让步等),锁定对应的引导词类别;
3. 结合用法和易错点选择引导词:根据引导词的用法差异(如when vs while)、时态呼应、固定搭配,规避易错点,确定最终答案。
状语从句专练精讲
专项一:单句语法填空
解题提示:每题聚焦1个核心考点,重点考查引导词的选择、时态呼应及易错点规避。
1. ______ he was young, he could play the piano very well.
2. I will call you ______ I arrive in Beijing.
3. He didn’t go to school ______ he was ill.
4. ______ it rains tomorrow, we will stay at home.
5. She studied hard ______ she could pass the exam.
6. He is ______ tall ______ he can reach the top of the shelf.
7. ______ you work hard, you will not pass the exam.
8. I have lived in this city ______ I was born.
9. ______ he is rich, he is not happy.
10. Plant trees ______ there is plenty of sunlight.
11. She talks ______ she knew everything.
12. He runs ______ fast ______ no one can catch up with him.
13. ______ you are free, let’s go for a walk.
14. Take an umbrella ______ it rains.
15. She is not ______ tall ______ her sister.
16. ______ hard he tries, he can’t finish the work on time.
17. I didn’t go to bed ______ I finished my homework.
18. It is ______ a beautiful flower ______ everyone likes it.
19. ______ you do, I will support you.
20. Do ______ I told you.
21. ______ he arrived, we were having dinner.
22. He will go to school ______ he is ill.
23. ______ we can arrive on time depends on the traffic.
24. She cried ______ she was sad.
25. ______ you choose this one or that one, it doesn’t matter.
26. He studied hard ______ he passed the exam.
27. ______ there is a will, there is a way.
28. She looks ______ she is tired.
29. I will help you ______ you finish your homework first.
30. ______ I was walking to school, I met my old friend.
参考答案与详细解析
1. Though/Although 解析:考查让步状语从句。句意“虽然他年纪小,但他钢琴弹得很好”,表让步,用though/although,不可与but连用,位于句首首字母大写。
2. as soon as 解析:考查时间状语从句。句意“我一到北京就给你打电话”,表“一……就……”,用as soon as,遵循主将从现原则。
3. because 解析:考查原因状语从句。句意“他没去上学,因为他生病了”,表直接原因,回答隐含的why提问,用because。
4. If 解析:考查条件状语从句。句意“如果明天下雨,我们就待在家里”,表可能发生的条件,用if,遵循主将从现原则,位于句首首字母大写。
5. so that 解析:考查目的状语从句。句意“她努力学习,为了能通过考试”,表目的,从句含情态动词could,用so that。
6. so; that 解析:考查结果状语从句。句意“他个子这么高,能碰到架子顶部”,so后接形容词tall,用so...that...结构。
7. Unless 解析:考查条件状语从句。句意“除非你努力学习,否则你不会通过考试”,unless表“除非”,相当于if not,位于句首首字母大写。
8. since 解析:考查时间状语从句。句意“自从我出生以来,我就住在这座城市”,since引导时间状语从句,主句用现在完成时,从句用一般过去时。
9. Though/Although 解析:考查让步状语从句。句意“虽然他很富有,但他不快乐”,表事实让步,用though/although。
10. where 解析:考查地点状语从句。句意“在阳光充足的地方种树”,表具体地点,用where。
11. as if/as though 解析:考查方式状语从句。句意“她说话的样子好像她什么都知道似的”,表虚拟语气,用as if或as though。
12. so; that 解析:考查结果状语从句。句意“她跑得这么快,没人能追上她”,so后接副词fast,用so...that...结构。
13. Since 解析:考查原因状语从句。句意“既然你有空,我们去散步吧”,表已知的显而易见的原因,用since,位于句首首字母大写。
14. in case 解析:考查目的状语从句。句意“带把伞,以防下雨”,表预防某种情况发生,用in case。
15. so/as; as 解析:考查比较状语从句。句意“她不如她姐姐高”,否定式同级比较,用not so/as...as...结构,中间接形容词原级tall。
16. However 解析:考查让步状语从句。句意“无论他多么努力,都不能按时完成工作”,however后接副词hard,表“无论怎样”,位于句首首字母大写。
17. until 解析:考查时间状语从句。句意“直到完成作业,我才去睡觉”,not...until...结构,表“直到……才……”。
18. such; that 解析:考查结果状语从句。句意“这朵花如此漂亮,每个人都喜欢它”,such后接名词短语a beautiful flower,用such...that...结构。
19. Whatever 解析:考查让步状语从句。句意“无论你做什么,我都会支持你”,whatever表“无论什么”,在从句中作宾语,位于句首首字母大写。
20. as 解析:考查方式状语从句。句意“按照我告诉你的去做”,表实际的方式,用as。
21. When 解析:考查时间状语从句。句意“当他到达时,我们正在吃晚饭”,arrive是短暂性动作,用when,位于句首首字母大写。
22. even if/even though 解析:考查让步状语从句。句意“即使他生病了,他也会去上学”,表假设让步,用even if或even though。
23. Whether 解析:考查让步状语从句(此处可理解为“是否能按时到达,取决于交通”),表“是否”,用whether,位于句首首字母大写。
24. because 解析:考查原因状语从句。句意“她哭了,因为她很伤心”,表直接原因,用because。
25. Whether 解析:考查让步状语从句。句意“无论你选择这个还是那个,都没关系”,表“无论是否”,用whether,位于句首首字母大写。
26. so that 解析:考查结果状语从句。句意“他努力学习,结果通过了考试”,从句无情态动词,表实际结果,用so that。
27. Where 解析:考查地点状语从句。句意“有志者,事竟成”(字面意为“哪里有意志,哪里就有方法”),用where,位于句首首字母大写。
28. as if/as though 解析:考查方式状语从句。句意“她看起来好像累了”,表真实的方式,用as if或as though。
29. on condition that 解析:考查条件状语从句。句意“我会帮你,条件是你先完成作业”,表有条件的承诺,用on condition that。
30. While/As 解析:考查时间状语从句。句意“当我步行去上学时,我遇到了我的老朋友”,walk是持续性动作,用while或as,位于句首首字母大写。
专项二:语法填空
Passage 1:
______1______ we get up early every morning is good for our health. It is important ______2______ we have a healthy lifestyle. ______3______ we exercise every day, we will become stronger. I have kept exercising ______4______ I was 10 years old. ______5______ it is cold outside, I still go for a run.
______6______ we eat healthy food is also important. We should avoid eating junk food ______7______ it is bad for our body. ______8______ we feel hungry, we can eat some fruit. It is such a good habit ______9______ it helps us keep fit. ______10______ we stick to these habits, we will live a long and healthy life.
Passage 2:
______1______ I was a child, my mother often told me stories. She told me that ______2______ we work hard, we will achieve our dreams. ______3______ I grew up, I realized the importance of her words. ______4______ I have a dream, I will try my best to realize it.
______5______ it is difficult to achieve the dream, I will never give up. ______6______ I feel tired, I will think of my mother’s words. ______7______ I succeed one day, I will thank my mother. It is because of her that I have the courage to keep going. ______8______ happens, I will remember her teachings. ______9______ I can make her proud is my biggest wish. ______10______ she is old, she is still the most important person in my life.
Passage 3:
______1______ we go to school every day, we should learn as much as possible. It is a pity ______2______ some students don’t study hard. ______3______ they don’t study hard, they will not pass the exam. ______4______ we study hard, we can get good grades.
Our teachers often tell us that ______5______ we have questions, we should ask them for help. ______6______ we ask questions actively, we can learn better. ______7______ it is late, our teachers are still willing to help us. ______8______ we thank them enough is hard to say. ______9______ we can become excellent students is what our teachers expect. ______10______ we grow up, we will never forget our teachers’ help.
逐篇答案 + 详细解析
Passage 1 答案 & 解析
1、That
解析:主语从句,从句句意完整、不缺成分,用 That 引导,置于句首不可省略。
2、that
解析:固定句型 It is important that...(…… 很重要),it 作形式主语,that 引导真正主语从句。
3、If
解析:条件状语从句,意为 “如果我们每天锻炼,就会变得更强壮”。
4、since
解析:时间状语从句,since + 一般过去时,表 “自从……”,搭配现在完成时。
5、Although/Though
解析:让步状语从句,意为 “尽管外面很冷,我依旧坚持跑步”。
6、That
解析:主语从句,从句语义完整,用 That 引导作句子主语。
7、because
解析:原因状语从句,解释避免垃圾食品的原因。
8、When/If
解析:时间 / 条件状语从句,意为 “当 / 如果我们饿了,可以吃些水果”。
9、that
解析:固定句型 such...that...(如此…… 以至于……),结果状语从句。
10、If
解析:条件状语从句,表 “如果我们坚持这些习惯,就会健康长寿”。
Passage 2 答案 & 解析
1、When
解析:时间状语从句,意为 “在我小时候,妈妈经常给我讲故事”。
2、if
解析:宾语从句内含条件状语从句,“如果我们努力,就会实现梦想”。
3、As/When
解析:时间状语从句,as I grew up 随着我长大。
4、If
解析:条件状语从句,“如果我有梦想,就会尽全力实现”。
5、Although/Though
解析:让步状语从句,“尽管追梦很难,我绝不放弃”。
6、When/If
解析:时间 / 条件从句,“当我疲惫时 / 如果我感到疲惫,就会想起妈妈的话”。
7、If
解析:条件状语从句,“如果有一天我成功了,我会感谢母亲”。
8、Whatever
解析:让步状语从句,whatever happens 无论发生什么。
9、That
解析:主语从句,从句完整不缺义,That 引导作主语。
10、Although/Though
解析:让步状语从句,“虽然她老了,但仍是我生命中最重要的人”。
Passage 3 答案 & 解析
1、When/While
解析:时间状语从句,“每天上学时,我们要尽可能多学习”。
2、that
解析:固定句型 It is a pity that...(遗憾的是……),that 引导主语从句。
3、If
解析:条件状语从句,“如果不努力学习,就无法通过考试”。
4、If
解析:条件状语从句,“如果努力学习,就能取得好成绩”。
5、if/when
解析:状语从句,“当 / 如果我们有问题,要主动求助老师”。
6、If
解析:条件状语从句,“如果积极提问,就能学得更好”。
7、Although/Though
解析:让步状语从句,“尽管天色已晚,老师仍愿意帮助我们”。
8、Whether
解析:主语从句,whether...is hard to say …… 很难说,表 “是否”。
9、That
解析:主语从句,从句完整,That 引导,表 “我们成为优秀学生是老师的期望”。
10、When/As
解析:时间状语从句,“当我们长大,永远不会忘记老师的帮助”。
高频核心语法总结(适配高考)
主语从句:从句完整用 That;表 “是否” 用 Whether
让步状语从句:Although/Though(虽然)、Whatever(无论什么)
条件状语从句:If(如果)
时间状语从句:When/As/Since/Before/After
固定句型
It is important/pity/reported that...
such...that... 结果状语从句
原因状语从句:because/since
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