2020-2021学年高考英语语法核心考点专项复习11 状语从句(含解析).docx
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1、高考英语语法核心考点专项复习11:状语从句从句是学生们很头疼的一个难题,也是高考的必考点。其中包括名词性从句、定语从句、状语从句。状语从句也是高考的重点,内容多、考点多。本专题主要讲解状语从句的分类、连接词、考点,并配以习题练习。 概述:状语从句在复合句中作状语。根据句子的含义,它可表示时间、地点、原因、目的、结果、条件、行为方式、比较、让步等。状语从句通常由一个连词引导,有时由一个起连词作用的词组引导。目的:掌握从句的连接词和用法,能够识别出从句,学会分析从句的结构。一、时间状语从句(1)表示时间的状语从句可以由when,whenever,as,while,before,until,ever
2、 since,as soon as等词引导。As a young man (When he was a young man),he was fond of hunting.他年轻时,喜欢打猎。When the rain stopped,students rushed out of the classroom.雨停了,学生们冲出教室。My mother was cooking while I was doing my homework.我做作业时母亲在做饭。We were about to set off when it suddenly began to rain.我们刚要出发,突然下起雨来。
3、It will be half a year before I come back.我半年之后才回来。(2)名词词组引导时间状语从句:every/each time每一次;the moment/minute那时(一就);the first/second time 第一/二次;the last time最后一次;the day那一天;the week那一周等。Every time I see him,he looks miserable.每次我看见他,他都是一副愁眉苦脸的样子。He said hed phone you the moment he got home.他说他一到家就给你打电话。(3
4、)as soon as,instantly,directly,immediately等表示从句动作一发生,主句动作随即发生,通常意为“一就”,也可引起表示时间的状语从句。The moment I saw it,I fell in love with it.我一看见它就爱上了它。Directly I had done it,I knew I had made a mistake.我一做完,就知道犯了个错误。He rushed upstairs immediately he heard a loud noise.他一听到大的响动就冲上了楼梯。(4)no sooner.than 和hardly.wh
5、en引导的从句表示“刚就”。主句中的动词一般用过去完成时,从句用过去时。若把no sooner,hardly提到句首,主句须倒装。No sooner had he sat down than the phone rang.他刚坐下,电话铃就响了。Hardly had the game begun when it started to rain.比赛刚刚开始,天就开始下起雨来。二、条件状语从句引导条件状语从句的从属连词有:if,unless (if.not除非),so/as long as (只要),in case (万一),on condition that (条件是),suppose/sup
6、posing (假设,如果),provided that (如果)等。Dont come in unless I let you.别进来,除非我允许。As long as you dont lose heart,you will succeed.只要你不灰心,你会成功的。Suppose/Supposing (that) they refuse us,who else can we turn to for help?倘若他们拒绝我们,我们还能向谁求助呢?三、原因状语从句原因状语从句常用because,since,as,for引导,还可用seeing that(既然),now that(既然),c
7、onsidering that/who/how.(考虑到),in that(因为),not that.but that (不是因为而是因为)等引导。Now that theyve got to know each other a little better,they get along just fine.由于彼此之间有了进一步了解,他们相处的不错。John did quite well in his exams considering how little he studied.考虑到约翰才学了那么一点点,他考得已很不错了。The situation is rather complicate
8、d in that we have two managing directors.由于我们有两位总经理,所以情况很复杂。四、让步状语从句让步状语从句由though(although),even if(even though),no matter how/where/what.,whatever,however,whoever等引导。Although the car is old,it still runs well.汽车虽然很旧,但跑起来仍然不错。No matter how hard he tried,he couldnt get her to change her mind.不管他怎样努力劝
9、说,也没能使她改变主意。五、目的状语从句目的状语从句常由that,so that,in order that,lest(以免,以防),for fear that等引导,放在主句之后。目的状语从句常用情态动词may(might),can(could)等。lest,for fear that后面常用“(should)动词原形”的虚拟语气。We pray that he may recover soon.我们祈求他早日康复。六、结果状语从句结果状语从句由so that,so.that,such that,such.that等词引导。Many contestants later failed drug
10、 tests,so that the race had to be rerun.许多参赛者后来都没有通过药检,赛跑只得重新进行。The nature of the job was such that he felt obliged to tell no one about it.这种工作的性质就是如此,他觉得只好秘而不宣了。七、方式状语从句方式状语从句由as,just as,as if,as though等词引导。Wed better leave things as they are until the police arrive.在警察到来之前,我们最好保持现场原样。You look as
11、if youve had a good time.你看起来好像玩得挺开心。八、比较状语从句比较状语从句由as.as,than,not so.as,the more.the more等词引导。My brother is not as old as me.我弟弟年纪没我大。Its a beautiful dress but its much more than I can afford.这件连衣裙很漂亮,不过太贵了。九、地点状语从句地点状语从句由where,wherever,anywhere,everywhere等词引导。Make a mark where you have any doubts
12、or questions.有疑点或问题的地方你做个标记。(地点状语从句)We should go where the Party needs us most.我们应到党最需要我们的地方去。Where there is a will,there is a way.有志者,事竟成。Wherever there is smoke,there is a fire.无火不生烟。(无风不起浪)Bamboo grows well where it has plenty of rain.竹子在雨水充足的地方长得好。If you could go wherever you wanted to in the wo
13、rld,where would you go?如果世界上任何地方你想去就能去的话,你会去哪儿?各种状语从句分类及其连词一览表类型连词(词组)时间状语从句when,as,while,before,after,since,once,till/until,as soon as,hardlywhen,no soonerthan,the moment,immediately,directly, instantly, every time, each time, next time, the first time原因状语从句because,as,since(既然),in that,seeing (that
14、),now (that),considering (that)地点状语从句where,wherever条件状语从句if,unless,as long as,in case,supposing,on condition that,providing,provided (that), suppose (that),only if类型连词(词组)让步状语从句(as) though,even if/though,while,however,whatever,no matter结果状语从句sothat, so that, suchthat目的状语从句so that,in order that, in c
15、ase, for fear that方式状语从句as,just as,as if/though比较状语从句asas,than,the morethe more学习状语从句应该注意的几个问题状语从句考查热点在引导时间、地点、条件、让步、比较、原因、目的及方式状语从句的连词及时态等方面。要选择正确的连词,需要正确理解句子的含义,准确判断主从句的逻辑关系,同时还要注意区分词义相近的连词、介词和副词。在备考中,要注意以下四点:1注意连词的选用不同的状语从句使用不同的连词,有时同一个连接词可连接不同的从句,表示不同的意义。如:Take your umbrella in case it should ra
16、in. 带上你的雨伞,以防下雨。(目的状语从句)In case theres a fire, what will you do first?万一发生火灾,你首先会做什么?(条件状语从句, in case通常在句首)2注意主句和状语从句的时态在时间、条件、让步等状语从句中,从句的时态往往有一定的限制。 一般来说,主句用将来时,从句用一般现在时或现在完成时。如:Ill go if he invites me. You cant leave until you have done your homework. No matter what he does, he cant get praise fr
17、om his father. 3注意倒装语序not until, no soonerthan, hardlywhen等引导的句子,句子的主句部分的语序需要作一些调整,而状语从句用正常语序。但是as(引导让步状语从句),no matter how等,从句部分的语序需要做些调整。如:No sooner had she got there than she called me up. (no sooner所在部分使用了倒装结构)No matter how rich he is, he is not happy. Child as/though he was, he knew what was the
18、 right thing to do. 4注意状语从句的简化(紧缩现象)有些表示时间、地点、条件、方式或让步的状语从句,如果谓语部分含有动词be,主语又和主句的主语一致(或相同),或从句主语为it,常把从句中的主语和谓语动词的一部分(特别是be)省略掉。如:Look out for cars while crossing the street. He said that he would like to offer help if necessary. The inspector looked round, as if (he was) in search of something. 1【误】
19、 In such dry weather, the flowers will have to be watered if they are going to survive. 【正】 In such dry weather, the flowers will have to be watered if they are to survive. 【解析】 if从句中不能用表示将来的will, be going to等,但可以使用if sb./sth. is to do sth. 结构。2【误】 You will be late unless you will leave immediately.
20、 【正】 You will be late unless you leave immediately. 【解析】 时间、条件、让步等状语从句中,用一般现在时表示将来意义。3【误】 Stay there where you are. 【正】 Stay where you are. 【解析】 where可以引导从句作地点状语,因此there是多余的,此句也可以是:Stay in the place where you are. 此时where引导的是定语从句。4【误】 Mum would not let him buy it, as if he had enough money! 【正】 Mum
21、would not let him buy it, even if he had enough money!【解析】 从前后两个句子之间的逻辑关系可知,应用even if。even if即使;as if好像。5【误】 Not until I began to work I realized how much time I had wasted. 【正】 Not until I began to work did I realize how much time I had wasted. 【解析】 not until置于句首时,主句应使用倒装。6. 【误】 I wont agree with n
22、o matter what you may say. 【正】 I wont agree with whatever you may say. 【正】 Whatever/ No matter what you may say, I wont agree. 【解析】 whatever引导的从句作agree with的宾语,即作宾语从句,whatever不能与no matter what替换。而引导状语从句时可替换,如第二句话。课堂练习1.时间状语从句One Friday, we were packing to leave for a weekend away _my daughter heard
23、cries for help.A. after B. while C. sinceD. when【解析】答案为D。when在句中表示“就在这时(突然)”之意,它构成的固定句式是:be doing sth.be about to do sth. had done sth.when。句意:一个周五,我们正在扛包裹动身去过周末,就在这时我女儿听到了呼救声。If a lot of people say a film is not good, I wont bother to see it, or Ill wait _ it comes out on DVD.A. whether B. after C.
24、 thoughD. until【解析】答案为D。句意:如果很多人说某部电影不好看,我也懒得去看了,或者等到出了DVD我再看。until为“直到”的意思。Please call my secretary to arrange a meeting this afternoon, or _ it is convenient to you. A. whenever B. howeverC. whicheverD. wherever【解析】答案为A。whenever意为“无论何时”;however意为“然而”;whichever意为“任何一个”;wherever意为“无论哪里”。连接副词在后句中充当状语
25、,根据语境可知是指时间,选A项。句意:请打电话给我的秘书安排今天下午的会议,或者在你任何方便的时候。As it reported, it is 100 years _Qinghua University was founded. A. when B. before C. after D. since【解析】答案为D。 “It is + 时间段 +since + 从句(谓语为一般过去时)”为固定句型,故答案选D项。句意:正如所报道的那样,自从清华大学建校以来已有100年的历史了。He had no sooner finished his speech _ the students started
26、 cheering. A. since B. as C. when D. than【解析】答案为D。考查no soonerthan.表示一就; 根据句子意思“他的演讲一讲完学生就开始欢呼了。”since既然;as作为; when 当什么时候;类似的还有hardly/scarcelywhen,这两个结构中no sooner,hardly,scarcely放在句首时句子用倒装语序。如本句可以改为:No sooner had he finished his speech than the students started cheering.Mary made coffee _ her guests
27、were finishing their meal.A. so that B although C. while D. as if【解析】答案为C。so that译为“以便”表示目的,although译为“尽管,虽然”,as if译为“好像”,while译为“当的时候”,因此while符合句意,选择C项。句意:当客人们将要结束用餐的时候玛丽才冲了咖啡。Just use this room for the time being, and well offer you a larger one _it becomes available.A. as soon as B. unless C. as
28、far as D. until【解析】答案为A。句意: 只是暂且使用这个房间。但是一有(as soon as)可以使用的房间,我们就提供你一个大点的房间。2.地点状语从句Today, we will begin we stopped yesterday so that no point will be left out.A. when B. where C. how D. what【解析】答案为B。句意:今天,为了不遗漏要点,我们从昨天结束的地方开始。where引导地点状语从句。_ unemployment and crime are high, it can be assumed that
29、the latter is due to the former.A. Before B. Where C. Unless D. Until【解析】答案为B。Where引导地点状语从句。句意:哪儿的失业率高,哪儿的犯罪就率高,可以认为前者是导致后者的原因。3.原因状语从句The old man asked Lucy to move to another chair _ he wanted to sit next to his wife.A. although B. unless C. because D. if【解析】答案为C。空格前后两个句子在逻辑意义上存在原因关系,所以用because引导原
30、因状语从句。Although引导让步状语从句,unless和if引导条件状语从句。句意:这位老人叫露丝挪到另一把椅子上因为他想跟他妻子挨着坐。4.条件状语从句He had his camera ready _ he saw something that would make a good picture. A. even if B. if only C. in case D. so that【解析】答案为C。in case 意为“以防,以免”;even if意为“即使”;if only意为“要是就好了”,so that意为“为了,以便”。 句意:他准备好了相机以防看到可以拍摄的景物。The l
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