高中各种从句.docx

1、高中各种从句考点1 主语从句引导主语从句的连接词主要有三类：连接词that，whether；连接代词what，who，whose，whatever，whichever，whoever等；连接副词when，where，why，how等。1连接词that，whether引导That the college will take in more new students this year is true今年这所大学将招收更多新生是真的。Whether he can finish his task on time is of great importance他是否能按时完成任务非常重要。【注】 (1)

2、if不能引导主语从句。(2)形式主语it替代主语从句。常见的it替代主语从句的句式主要有以下几种：AIt+系动词+形容词+that从句。如：It is quite clear that the whole project is doomed to failure很清楚，整个计划注定要失败。BIt+系动词+名词+that从句。如：It is our hope that the two sides will work towards peace我们的希望是双方能朝着和平的方向发展。CIt+be+ved形式+that从句。如：It is announced that the plan has bee

3、n successfully carried out据宣布计划已经顺利实施。2连接代词引导What we cant get seems better than what we already have我们得不到的东西似乎比我们拥有的东西好。who the letter was from is still unknown这封信是谁寄出的还不清楚。Whichever of you gets here first will get the prize你们当中第一个到达这里的人将获得奖项。3连接副词引导How acupuncture reduces and relieves pain is uncle

4、ar针灸是如何减轻和解除疼痛的还不清楚。why dinosaurs suddenly disappeared still remains a mystery恐龙为什么突然消失了还是个谜。考点2 宾语从句引导宾语从句的连接词主要有三类：连接词that，whether，if等，连接代词what，who，whose，whatever，whichever，whoever等，连接副词when，where，why，how等。1连接词that，whether，if引导I think(that)you should turn to the teacher for help我认为你应该向老师寻求帮助。I don

5、t know if/whether he still lives here after so many years我不知道这么多年后他是否还住在这儿。【注】whether/if都意为“是否”。一般情况下，它们可以互换，口语中常用if，但以下情况中，只能用whether。(1)与or not紧接连用时。如：Let me know whether or not you can come请让我知道你是否能来。(2)作介词的宾语从句时。如：We are interested in whether you will attend the meeting我们对你是否参加会议感兴趣。2连接代词what，wh

6、o，whose，whatever，whichever，whoever等如：She asked me whose handwriting was the best in the class她问我班上谁的书法最好。Ill just say whatever comes into my mind我想到什么就说什么。3.连接副词引导when，where，why，how等Do you know when the ancient Olympic Games began?你知道古代的奥运会是什么时间开始的吗?Ive been thinking about how we can make the newspa

7、per more interesting我一直在考虑如何使我们的报纸更用趣。4宾语从句的语序在宾语从句中要用陈述句语序。如：He asked me when we could set out the next day他问我第二天什么时候可以出发。Did you find out where she lost her car?你查出她在哪里丢的车了吗?5宾语从句的时态(1)当主句的谓语动词是一般现在时时，其宾语从句的时态可以是任何适当的时态。She says(that)she works from Monday to Friday她说她周一至周五上班。(从句是一般现在时)she says(tha

8、t)she will leave a message on his desk她说她要在他桌子上留个便条。(从句是一般将来时)She says(that)she has never been to Mount Emei她说她从来没有去过峨眉山。(从句是现在完成时)(2)当主句的谓语动词是一般过去式时，其宾语从句的时态一般要用适当的过去时态。如：He said there were no classes yesterday afternoon他说昨天下午没有课。(从句是一般过去时)He said that he was going to take care of the baby他说他会去照看这个

9、婴儿。(从句是过去将来时)He said that they were having a meeting at that time他说他们那时正在开会。(从句是过去进行时)(3)当宾语从句是表达客观真理和规律的句子时，其时态仍旧用一般现在时。如：The teacher told us that nothing is difficult if we put our hearts into it老师告诉我们世上无难事，只怕有心人。He said that light travels much faster than sound他说光比声音传播得快。【注】在使用宾语从句时需要注意下面几点：(1)动词

10、find，feel，think，consider，make，believe，guess，suppose，assume等后有宾语补足语时，则需要用it作形式宾语，而将that宾语从句后置。如：I think it necessary that we take plenty of boiled water every day我认为每天多喝开水是有必要的。I have made it a rule that I keep diaries我每天写日记成了惯例。(2)hate，like，take，owe，have，take for granted等表示“喜欢；痛恨；认为”的动词或动词短语和see to表

11、示“注意，留意”后有宾语补足语时，需要用it作形式宾语而将宾语从句后置。如：I hate it when they talk with their mouth full of food我讨厌他们满嘴食物说话。When you start the engine，you must see to it that the car is in neutral启动发动机时，一定要使汽车的离合器处于空档位置。(3)介词后的宾语从句。如：She is always thinking of how she can do more for others她总想着如何才能为别人做得更多。We are talking

12、about whether we admit students into our club我们正在讨论是否让学生加入我们的俱乐部。(4)宾语从句的否定转移。将think，believe，suppose，expect，fancy，imagine等动词后面宾语从句的否定词转移到主句中，即主句的谓语动词用否定式，而从句的谓语动词用肯定式。如：I dont think I know you我想我并不认识你。I dont believe he will come我相信他不回来。考点3、表语从句常由连接词that，whether；连接代词who，whom，whose，which，what，whoever，

13、whomever，whichever，whatever；连接副词when，where，how，why引导。1连接词引导The reason for his absence is that he hasnt been informed.他缺席的原因就是他没接到通知。The question remains whether they will be able to help us问题还是他们能否帮我们。2连接代词和连接副词引导The problem is who will take charge of this shop问题是谁将接管这家店铺。That is when I realized the

14、 importance of journalism那时我才意识到新闻工作的重要性。【注】 (1)as/as if/as though引导的表语从句常跟在特定动词后面，如seem，appear，look，taste，sound，feel等。如：It sounds as if someone is knocking at the door听上去好像有人在敲门。At that time，it seemed as though I couldnt think of the right word当时我似乎怎么也想不出一个恰当的字眼来。(2)当主句的主语是reason时，表语从句一般由that引导，这种用

15、法常见于句型The reason whyis that。如：The reason why he came late was that he got up late他来得晚是因为起床晚了。考点4 同位语从句同位语从句在句子中作某一名词的同位语，一般位于该名词之后，说明该名词的具体内容。这些名词常见的有idea，fact，news，hope，belief，thought，doubt，promise，suggestion，order等。1通常用连词that引导同位语从句，that无词义，也不作句子成分，但不能省略。注意从句用陈述句语序。如：They expressed the hope that w

16、e would go and visit Shanghai again他们表示希望我们再去访问上海。I have no idea that she quit her present job我不知道她辞掉了现在的工作。Give me your promise that you will come to our party this evening答应我，你今天晚上会来参加我们的聚会。2同位语从句还可以用whether，when，where，why，how等引导。如：The student asked me the question whether the book was worth readi

17、ng学生问了我这个问题：这本书是否值得一读。I have no idea why he was excited at that time我不知道当时他激动的原因。 考点5 名词性从句需要注意的事项1that的用法。在主语从句、表语从句和同位语从句中that一般不能够省略；在宾语从句中有时可以省略，一般需要注意下面两点：(1)当that从句作介词宾语时，that不能省略。如：They share little in common except that they are from the same country除了来自同一个国家之外，他们几乎没有共同点。(2)当主句谓语动词后接两个或两个以上的

18、宾语从句时，可以省略第一个that，其他的不省略。如：I believe(that)youve done your best and that things will improve我相信你已经尽力了，而且情况也会得到改善。2that与what的区别。that在从句中不能够充当句子成分，也没有含义；what可以在从句中作主语、表语、宾语或定语，意思是”什么，的事情”。如：The hope that he may recover is not gone yet他会康复的希望没有消失。(that不充当成分，也无含义)Wht he said proved to be true他所说的话证明是正确的。

19、(what作said的宾语，可以翻译为“的话”)3定语从句与同位语从句的区别。定语从句是从句对其先行词的修饰或限制；而同位语从句是对从句前面的抽象名词作进一步的说明和解释。如：The news that our team has won the game was true我们队赢了那场比赛的消息是真的。(同位语从句，补充说明news)The news that he told me yesterday was true昨天他告诉我的那个消息是真的。(定语从句，news在从句中作told的宾语)I made a promise that if anyone set me free I would

20、 make him very rich我许诺如果谁让我自由，我就让他非常富有。(同位语从句，补充说明promise的内容)The mother made a promise that pleased all her children妈妈许下了一个令她的孩子们高兴的诺言。(定语从句，promise在从句中作pleased的主语)高中定语从句详细讲解（一）定义及相关术语1定语从句：修饰某一名词或代词的从句叫定语从句。定语从句一般紧跟在它所修饰的先行词之后。2先行词：被定语从句修饰的词叫先行词。3关系词：引导定语从句的词叫关系词。关系词有关系代词和关系副词。关系代词有that,which,who,w

21、hom,whose,as等；关系副词有when,where,why等。关系词通常有下列三个作用：A、引导定语从句；B、代替先行词；C、在定语从句中担当一个成分。例如：Themanwhoisshakinghandswithmyfatherisapoliceman.该句中，whoisshakinghandswithmyfather是定语从句，修饰先行词theman，“who”是引导定语从句的关系词，代替先行词theman，在定语从句中作主语。（二）关系代词引导的定语从句1who指人，在定语从句中作主语。TheboyswhoareplayingfootballarefromClassOne.正在踢足

22、球的男孩是一班的。Thosewhowanttogotothemuseummustbeattheschoolgateat7tomorrowmorning.想去博物馆的人必须在明晨7点到大门口集合。YesterdayIhelpedanoldmanwhohadlosthisway.昨天我帮助了一位迷路的老人。Thatistheteacherwhoteachesusphysics. 那就是教我们物理的老师。2whom指人，在定语从句中做宾语，常可省略。MrLiuistheperson(whom)youtalkedaboutonthebus.刘先生就是你们在公共汽车上谈论的那个人。LiMingisjus

23、ttheboy(whom)Iwanttosee.李明正是我想要见的男孩。Theprofessor(whom)youarewaitingforhascome.你正在等的教授已经来了。Thegirl(whom)theteacheroftenpraisesisourmonitor.老师经常表扬的那个女孩是我们的班长。注意：关系代词whom在口语或非正式文体中常可用who来代替，也可省略。Theman(whom/who)youmetjustnowismyoldfriend. 3Which指物，在定语从句中做主语或宾语，做宾语时常可省略。Footballisagamewhichislikedbymost

24、boys.足球是大多数男孩所喜欢的运动。Thefactorywhichmakescomputersisfarawayfromhere.制造计算机的那家公司离这儿很远。Helikestoreadbookswhicharewrittenbyforeignwriters.他喜欢外国作家写的书。Thehousewhichisbythelakelooksnice.湖边的那幢房子看上去很漂亮。Thisisthepen(which)heboughtyesterday.这是他昨天买的钢笔。Thefilm(which)theywenttoseelastnightwasnotinterestingatall.他们

25、昨晚看的电影一点意思也没有。4That指人时，相当于who或whom；指物时，相当于which.。在定语从句中作主语或宾语，作宾语时常可省略。Thenumberofpeoplethat/whocometovisitthiscityeachyearreachesonemillion.每年来参观这座城市的人数达一百万。Whereisthemanthat/whomIsawthismorning?我今天早上看到的那个人在哪儿？Thepersonthat/whomyouintroducedtomeisverykind.你介绍给我的那个人很友好。Theseasonthat/whichcomesafters

26、pringissummer.春天以后的季节是夏季。YesterdayIreceivedaletterthat/whichcamefromAustralia.昨天我收到了一封来自澳大利亚的信。5Whose通常指人，也可指物，在定语从句中做定语。Ivisitedascientistwhosenameisknownalloverthecountry.我拜访了一个全国知名的科学家。Hehasafriendwhosefatherisadoctor.他有一个爸爸当医生的朋友。Ioncelivedinthehousewhoseroofhasfallenin.我曾经住在那幢屋顶已经倒塌了的房子里。注意：指物时

27、，常用下列结构来代替：Theclassroomwhosedoorisbrokenwillsoonberepaired.Theclassroomthedoorofwhichisbrokenwillsoonberepaired.Doyoulikethebookwhosecoverisyellow?Doyoulikethebookthecoverofwhichisyellow?（三）“介词+关系代词”引导的定语从句关系代词在定语从句中作介词宾语时，从句常常由“介词+关系代词”引出。Theschool(which/that)heoncestudiedinisveryfamous.Theschoolin

28、whichheoncestudiedisveryfamous.他曾经就读过的学校很出名。TomorrowIllbringherethemagazine(which/that)youaskedfor.TomorrowIllbringherethemagazineforwhichyouasked.明天我将把你要的杂志带来。Thisistheboy(whom/who/that)Iplayedtenniswithyesterday.ThisistheboywithwhomIplayedtenniswithyesterday.这是我昨天跟他打台球的男孩。Wellgotohearthefamoussing

29、er(whom/who/that)wehaveoftentalkedabout.Wellgotohearthefamoussingeraboutwhomwehaveoftentalked.我们将去听那位我们经常谈论的著名歌唱家演唱。ThemanagerwhosecompanyIworkinpaysmuchattentiontoimprovingourworkingconditions.ThemanagerinwhosecompanyIworkpaysmuchattentiontoimprovingourworkingconditions.我工作的那家公司的经理十分注意改善我们的工作条件。注意：含有介词的短语动词一般不拆开，介词仍放在短语动词的后面。如：lookfor,lookafter,takecareof等。Thisisthewatch(which/that)Iamlookingfor.(正)这是我正在找的手表。Thisisthewat