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1、高效语法复习篇 第11节 状语从句 一、让步状语从句1用when 和while引导让步状语从句。不要认为when和while只引导时间状语从句,其实它们也可引导让步状语从句,意思是“尽管或“虽然。She stopped when she ought to have continued.尽管她应该继续下去,她却停住了。While I understand what you say, I cant agree with you. 虽然我理解你的意思,但我还是不同意。2用whetheror引导的让步状语从句。Ill do it whether you like it or not.不管你是否喜欢,我

2、都要做。3用whatever, whoever, however, whenever, wherever 等引导的让步状语从句。(1)均可引导让步状语从句,意为“无论Whatever you say, I believe you.无论你说什么,我都相信你。Whoever telephones, tell them Im out.不管是谁打 ,都说我出去了。Whenever you come, you are welcome.无论你什么时候来,都是受欢送的。(2)引导让步状语从句时,通常可换成no matterNo matter what you say, I believe you.无论你说什

3、么,我都相信你。No matter how much he eats, he never gets fat.无论他吃多少, 他都不发胖。(3)注意however用于以下两类句型的用法。 however主语谓语However you travel, itll take you at least three days.不管你怎么走,至少要3天。however形容词或副词主语谓语However cold it is, she always goes swimming.不管天多冷,她都会去游泳。有时该结构中的主语和谓语可以有所省略:He was of some help, however small.

4、他总能帮些忙,不管多小的忙。(4)有时从句谓语可用情态动词。Ill find him, wherever he is (may be). 无论他在哪里,我都要找到他。Keep calm, whatever happens (may happen). 无论发生什么事都要保持冷静。(5)whenever有时可引导时间状语从句,wherever 有时可引导地点状语从句。Whenever we see him we speak to him.每次见到他,我们都和他说话。4让步状语从句与倒装引导倒装的让步状语从句通常用as和though,但是不能用although。Poor though I am, I

5、 can afford it.我虽穷,但这东西还是买得起的。Much as I like Paris, I couldnt live there.尽管我喜欢巴黎,但我不能住在那里。注意:as可以在以上这样的倒装结构中引出让步状语,但假设不倒装,那么不能用as,而与之相反,although在不倒装的结构中可引导让步状语从句,但在倒装的结构中却不可以用。二、原因状语从句1关于notbecause结构该结构中的否认词有时否认主句,有时否认从句,一般要根据句子的意思作出正确或符合逻辑的理解。假设not否认主句,最好在because之前用逗号,否那么会引起歧义,如下句在没有特定上下文时就有两种解释:I

6、didnt go because I was afraid.我没有去是因为怕。/ 我不是因为怕才去。不过假设because之前有just修饰,一般认为not 是否认从句的。You shouldnt get angry just because some people speak ill of you. 你不要因为有人说你坏话而生气。2because 习惯上不与 so 连用汉语习惯上说“因为所以,但英语习惯上却不能将so与because连用:因为下雨,所以我们待在家里。正:Because it was raining, we stayed at home. / It was raining, s

7、o we stayed at home.误:Because it was raining, so we stayed at home.3because 从句与 because of 短语的转换because引导的原因状语从句有时可与because of 短语转换。He cant come because he is ill. / He cant come because of his illness.他因病不能来。I said nothing about it because his wife was there. / I said nothing about it because of hi

8、s wifes being there.因为他妻子在那儿,我对此事只字未提。三、结果状语从句1sothat与 suchthat的用法比较从用法上看,so后应接形容词或副词,而such后接名词。但有时“so形容词后还可接一个名词,且这个名词总是带不定冠词的单数可数名词(不能是复数名词或不可数名词)。正:He is so clever a child that we all like him.这小孩很聪明,我们都喜欢他。正:They are such clever children that we all like them.这些孩子很聪明,我们都很喜欢他们。误:They are so cleve

9、r children that we all like them.此时的sothat结构可与suchthat结构转换:Its such an interesting film that we all want to see it.这电影很有趣,我们都想看。 Its so interesting a film that we all want to see it.这电影很有趣,我们都想看。 注意:在much, many, little, few这4个词前总是用so而不用such。He had so many falls that he was black and blue all over.他摔

10、了许多跤,结果全身都是伤。2结果状语从句与不定式短语的转换由so that和sothat引导的结果状语从句有时可与表结果的so as to和soas to引出的不定式短语转换。He arrived late so that he missed the train. He arrived late so as to miss the train. 他到得很迟,结果未赶上火车。3so that引导目的状语从句和结果状语从句的区别(1)含义上的区别:引导目的状语从句时表示的是一种意欲或可能性,引导结果状语从句时表示的是一种事实。(2)形式上的区别:引导目的状语从句之前不用逗号(说话时也不停顿),而结

11、果状语从句之前那么通常有逗号(说话时常有停顿);有时引导结果状语从句时其前也可以没有逗号,此时可看从句中是否有 can / could, may / might, will /would 以及should等情态动词,如果没有,那么多半是结果状语从句。I am going to the lecture early so that Ill get a good seat. 我想早点去听演讲,以便找个好座位。(so that 引导目的状语从句)I went to the lecture early so that I got a good seat. 我去听演讲去得很早,所以找了个好座位。(so t

12、hat 引导结果状语从句)另外,so that引导目的状语从句时有时可放在主句之前,而引导状语结果从句时却不能。正:So that he could buy a new car, he saved a lot of money. 他节省了一大笔钱,以便能买辆新车。(引导目的状语从句)误:So that I could hardly stand, I was tired.(引导结果状语从句不能置于句首,可改为I was tired so that I could hardly stand. 我很累,几乎站不稳了。)四、目的状语从句1引导目的状语从句的附属连词主要的有 in order that,

13、 so that, in case, for fear (that)等。Speak clearly so that they may understand you.讲清楚些,以便他们能理解你。Shut the window for fear that it may rain.把窗子关上以防下雨。2目的状语从句与状语短语的转换(1)为了简洁起见,当目的状语从句的主语与主句的主语相同时,目的状语从句有时可用表目的的不定式短语替换。He got up early so that he could catch the early bus. He got up early so as to catch

14、the early bus.他起床很早以便赶上早班车。He came in quietly in order that he shouldnt wake his wife. He came in quietly in order not to wake his wife.他轻轻进来,以免把他妻子吵醒。(2)有时还可与表示目的的介词短语替换。He left an hour early for fear he might miss the train. He left an hour early for fear of missing the train.他提前一小时离开,以免错过火车。3in c

15、ase引导从句的区别(1)in case既可引导目的状语从句,也可引导条件状语从句,主要视句意而定:In case he comes, let me know.(条件状语从句)如果他来,告诉我一声。Tell me in case you get into difficulty.(目的状语从句)遇到困难请告诉我。(2)in case引导目的状语从句,从句有时可用“should动词原形这样的形式:Take your coat in case it rains (should rain)带着雨衣以防下雨。五、条件状语从句1除根本的引导条件状语从句的附属连词外,还有动词尤其是其分词形式(如suppos

16、e, supposing, provided, providing等)和介词短语(如in case, on condition that等)也可用作连词表示条件。I will come on condition (that) she is invited to.如果邀请她来, 那我就来。He may go with us provided (providing) he arrives in time. 他假设及时到,就可以和我们一起走。注意:suppose和supposing引导条件状语从句时,通常用于主句为疑问句的场合:Suppose the boss saw you,what would

17、he say?如果老板看到你,他会怎样说?Supposing he does not come, shall we go without him?他假设不来,是不是不带他去?2条件状语从句的时态当主句为将来时态或具有将来意义时,条件状语从句通常要用一般现在时表示将来意义,而不能直接使用将来时态。六、时间状语从句1除根本的引导时间状语从句的附属连词外,还有些本来不是附属连词却可用作附属连词的词: (1) 表示“一就的附属连词:the moment, the minute, the second, the instant, immediately, directly, instantly, onc

18、e, no soonerthan, hardlywhen等。Immediately he came I told him the news.他一来我就把消息告诉了他。The moment I saw him I knew there was no hope.我一看到他就知道没希望了。(2)涉及time的几个附属连词:every time(每次),each time(每次),(the) next time(下次),any time(随时),the last time(上次),the first time(第一次)。Every time I see her Ill think of it.每次我看

19、到她,我就想起这事。He felt nervous each time she spoke to him.每次她和他讲话,他都感到紧张。2与时间状语从句有关的时态问题(1)当主句为将来时态或具有将来意义时,时间状语从句通常要用一般现在时表示将来意义,而不能直接使用将来时态。Turn off the lights before you leave.走前关灯。I will tell him as soon as he arrives.他一来我就告诉他。(2)与since 从句搭配的主句的时态通常是现在完成时态。He has lived here since 2021.自2021年以来,他就一直住在

20、这儿。Where have you been since I last saw you?自我上次见到你之后你到哪里去了? 注意:在特定的语言环境中有时也可能用过去完成时或一般现在时:It seems like years since we last met.我们似乎几年未见面了。Yesterday he told me that he hadnt eaten anything since Tuesday. 他昨天告诉我自星期二以来他一直未吃任何东西。1. He is _ a good teacher _ we all respect. A. such; that B. such; as C.

21、so; that D. so; as 【分析】B此题容易误选A,一方面是因为 suchthat是同学们很熟悉的一个句式,一看就可能选中了;另一方面,将 suchthat的意思“如此以致代入句中,也完全通顺,即“他是一位如此优秀的教师,以致我们大家都尊敬他。从外表上看,以上分析很有道理,但其实错了。因为在suchthat (如此以致)结构中,that 引导的是结果状语从句,并且 that 在从句中不充当句子成分,假设在上句填入 suchthat,句末的 respect 显然缺少宾语(注意:respect 是及物动词)。【分析】正确的答案应是B,as 用作关系代词,用以引导定语从句,修饰其前的名词

22、 teacher,同时 as 在定语从句中用作动词 respect 的宾语,句意为“他是我们大家都尊敬的一位好老师。有的同学们可能还会问,能否选A答案,而将其后的 that 视为引导定语从句的关系代词呢?不能。因为领先行词受到 such 的修饰时,其后的定语从句应用关系代词 as 来引导,而不用that。顺便说一句,假假设在原句的respect后加上him一词,那么应选A,即He is such a good teacher that we all respect him.(他是如此好的一位老师,我们大家都尊敬他)。2. The building must be saved, _ the co

23、st. A. what B. which C. whatever D. whichever【分析】C许多同学对此题感到无从下手。此题有两个难点:一是 whatever 的用法问题,二是此句的 the cost 后省略了动词 is。whatever 有两个用法,一是用以引导名词性从句,二是引导让步状语从句(此时也可换成 no matter what)。3. I hate _ when people talk with their mouths full. A. it B. that C. them D. /【分析】A此题容易误选D,许多同学想当然地认为when 所引导的句子是一个宾语从句,无需在 hate 和 when 从句之间使用其他词语。事实上,when 在此引导的不是一个宾语从句,而是一个时间状语从句,因为句中的 when 的意思并不是“什么时候,而是“当时候。另一方面,有的同学可能认为,就算 when 引导的是状语从句,也可以选D,因为动词 hate 可视为不及物动词,其后不接宾语。【分析】但事实上,hate 在现代英语中只用作及物动词,其后必须要有宾语,假假设其后直接跟有 when 引导的时间状语从句或 if 引导的条件状语从句时,习

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