高考英语复习名词性从句用法及真题解析之一.docx

1、高考英语复习名词性从句用法及真题解析之一高中英语复习-名词性从句用法及真题解析考点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

2、 importance他是否能按时完成任务非常重要。【注】 (1)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 i

3、s announced that the plan has been 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 r

4、educes and relieves pain is unclear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 te

5、acher for help我认为你应该向老师寻求帮助。I dont 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

6、meeting我们对你是否参加会议感兴趣。2连接代词what，who，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

7、 about how we can make the newspaper 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

8、她说她周一至周五上班。(从句是一般现在时)she says(that)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

9、to take care of the baby他说他会去照看这个婴儿。(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

10、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 gra

11、nted等表示“喜欢；痛恨；认为”的动词或动词短语和see to表示“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 othe

12、rs她总想着如何才能为别人做得更多。We are talking 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。考点3、表语从句常由连接词that，whether；连接代词who，whom，whose，which，what，whoever，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 qu

13、estion 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 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 so

14、meone 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

15、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 we 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 wh