名词性从句连接词的选用.doc

名词性从句连接词的选用(一) that 和 what的选用：that 和 what都可引导所有的名词从句。但是，what除起连接作用外，还在名词性从句中充当成分，可做从句的主语、宾语、或表语。而that在名词性从句中不充当任何成分，只起连接作用。that / what1._ he wants is a book.2. _ he wants to go there is obvious.3.The result is _ we won the game.4.This is _ we want to know.5.Is _ he told us true ?6.We should pay attention to _ the teacher is saying.7. I have no doubt _ he will come.8. I have no idea _ he did that afternoon.(二） if 和whether 的选用不能使用if 的情况：a. 主语从句b. 表语从句c. 同位语从句d. 介词后的宾语从句e. whether to do 做动词宾语不能用if to do.f .whether or not 连在一起引导宾语从句时不用if.1. I asked her _ she had a bike.2._ we will hold a party in the open air tomorrow depends on the weather.3. Were worried about _ he is safe.4. I dont know _ he is well or not.5. I dont know _ or not he is well.6. The question is _ he should do it.7.The doctor can hardly answer the question _ the old man will recover soon.8. I dont know _ to go.（三）其它连接代词和副词的连用 主要根据名词性从句中的具体意义,正确的选择who、which、when、where、why、how 等连接词，这些连接词既具有疑问含义，又起连接作用，同时在从句中充当各种成分。我们何时举行运动会还没有决定。_ we shall hold our sports meeting is not decided.我不知道昨天谁打破了玻璃。I dont know _ broke the glass yesterday.我不知道他长的什么样子。I have no idea _ he looks like.这就是我忘记眼镜的地方。This is _ I left my glasses.（四）引导词that 的省略that 可省略的情况：单个宾语从句中的that可省略that不可省略的情况：a. 主语从句b.表语从句c.同位语从句d.用it做形式宾语的宾语从句e. 并列的宾语从句中的后几个从句的,引导词that 不能省略1.I dont think _ she is coming.2.It is a pity _ he has made such a mistake.3.The reason is _ he is careless .4.The news _ our team won the match inspired us.5.I dont think it necessary _ you should read English aloud.6.He told me _ his father had died and _ he had to make a living alone.五、同位语从句的引导和辨别1.同位语从句的格式：n.+ 连接词 + 从句2.能接同位语从句的名词有：fact、idea, news, information, order, belief, suggestion, advice等.3.连接词通常是that,也可根据含义选用 whether, what, when, where 等来引导同位语从句.1. I have no idea _ he comes from.2. He cant answer the question _ he got the money.3.He gave us many suggestions _ we should get up earlier and take more exercise.4.I have no doubt _ he will win.5. I have some doubt _ he will win.（六） 同位语从句和定语从句的区别1.定语从句是先行词的修饰语，它不涉及先行词的具体内容。定语从句中that不但起连接作用，而且在定语从句中充当一个句子成分，充当从句的宾语成分时可省略。2.同位语从句对中 心词的内容作进一步的解释和说明，表明中心词的具体内容。引导同位语从句的that 在同位语从句中不做任何成分,只起连接作用,无具体含义,且不可省略.1.We expressed the hope that they had expressed.2. We expressed the hope that they would come to China again.1.The information has been announced that more middle school graduates will be admitted into university.2.The information that he revealed at the meeting is of great value.（七） 名词demand, suggestion, proposal, advice等词后的同位语从句的语气要用虚拟语气,结构为 should + do, should 可省略 He gave me a suggestion that I ( should ) be calm now.(八） 宾语从句的时态呼应1. 如果主句时态是现在时或将来时,从句谓语可根据句意需要而选用任一种时态. a .他相信他的梦想总有一天会实现的. He believes _ . b .请告诉我你昨天这个时候在干什么. Please tell me _.Practice: 1. It now appears _ they are in need of help. A. that B. which C. what D. how2. It is good news _ they will arrive in a few days. A. which B. what C. that D. how3. This is _ she was born. A. where B. which C. that D. what4. The question is _ we cant go there today. A. that B. what C. which D. when5. The question is _ it is worth doing. A. if B. whether C. which D. what6. The reason he has made such great progress is _ he has never wasted his time. A. because B. why C. that D. what7. My suggestion is _ we should turn the land into rice fields. A. what B. that C. which D. where8. His proposal is that the dam _ at the foot of the mountain. A. build B. will build C. be built D. will be built9. We all know the truth _ the earth goes round the sun. A. that B. which C. what D. whether10. We heard the news _ our team had won. A. which B. that C. what D. where11. The problem _ it is right or wrong has not yet been decided. A. which B. that C. whether D. if12. You must do well _ the teacher asks you to do. A. which B. what C. that D. where答案:一：what，that，that，what，what，what，that，what二：if/whether , whether, whether ,whether/if , whether , whether , whether , whether三：when ,who , what , where 四：（that），that，that，that，that （that ） that五：where, how, that, that, whether六：定语从句，同位语从句 ，同位语从句 ，定语从句七：he was preparing for the examination.He had been away from his hometown for ten years.light travels in a straight line.Practice:ACAAB, CBCAB, CB