最新高中名词性从句全面讲解及练习(含答案)

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高中英语名词性从句练习附答案详解

高中英语名词性从句练习(附答案详解Do you know _?A. where does he liveB. where he livesC. where he livedD. where he has lived答案：B解析：此处为宾语从句，要用陈述语序，故选B。

She asked me _.A. what I am doingB. what am I doingC. what I was doingD. what was I doing答案：C解析：此处为宾语从句，要用陈述语序，故选C。

I don't know _.A. how to do itB. how do itC. how doing itD. how did it答案：A解析：此处为宾语从句，要用不定式作宾语，故选A。

He is the man _.A. who I spoke to himB. who I spoke toC. who I spoke with himD. who I spoke with答案：B解析：此处为定语从句，关系代词在从句中作主语，故选B。

The reason why he left _.A. is that he was unhappyB. is because he was unhappyC. was that he was unhappyD. was because he was unhappy答案：A解析：此处为主语从句，要用that引导，故选A。

We don't know _.A. where is he fromB. where he is fromC. from where is heD. from where he is答案：B解析：此处为宾语从句，要用陈述语序，故选B。

She is the girl _.A. who I went to schoolB. who I went to school withC. whom I went to schoolD. whom I went to school with答案：B解析：此处为定语从句，关系代词在从句中作介词with的宾语，故选B。

高中英语名词性从句知识讲解以及练习题附答案

高中英语名词性从句知识讲解以及练习题附答案一、名词性从句概述名词性从句是一种充当名词作用的从句，通常在主句中作主语、宾语、表语或同位语。

它通常由引导词（如that, whether, if, who, whom, whose, which, what等）引导，并且从句中含有一个主语和谓语。

名词性从句的种类有很多，包括主语从句、宾语从句、表语从句和同位语从句等。

下面我们将逐一介绍这些从句。

二、主语从句主语从句作为一个名词，通常位于句首，是一个句子，主要作用是作为主句的主语。

引导主语从句的词：What (什么)；Whether (是否)；If (是否)；That (那个)。

例句：What he said is true. (他说的是真的。

)Whether it will rain tomorrow is uncertain. (明天是否会下雨还不确定。

)If you go, I will go too. (如果你走，我也跟着走。

)That he is coming is good news. (他来的消息是好消息。

)注意：主语从句的谓语动词通常要用单数形式。

What引导的主语从句通常用来表示“事物”的概念。

三、宾语从句宾语从句是一个名词，通常位于主句的动词后面，作为主句的宾语。

它可以由常见的宾语从句引导词引导，例如whether, if, that, who, whom, whose, what, when, where, how等。

引导宾语从句的词：Whether (是否)；If (是否)；That (那个)；Who (谁)；Whom (谁)；Whose (谁的)；What (什么)；When (何时)；Where (何处)；How (如何)。

例句：I know that he is coming. (我知道他要来。

)I wonder if he is telling the truth. (我想知道他是否说了真话。

高中名词性从句全面讲解及练习(含答案)

高中名词性从句全面讲解及练习(含答案)High School English Lecture - Noun Clauses (Subject。

Predicate。

Object。

and Appositive Clauses)1.For a declarative sentence used as a noun clause。

use the n "that" + subject and verb。

"That" introduces the subordinate clause。

which is complete and not a part of the main clause。

The subject can be replaced by "it" as a formal subject。

and the first "that" in an object clause can be omitted。

For example。

"You study hard."Subject Clause: That you study hard is known to us。

= It is known to us that you study hard.Predicate Clause: XXX is that you study hard.Object Clause: I think (that) you study hard。

and that (cannot be omitted)。

Appositive Clause: XXX you study hard is known to us。

*Compare with the subject clause!If a XXX clarifies an abstract noun。

名词性从句考点+例题_全面解析经典

名词性从句考点+例题_全面解析经典一、名词性从句1．______ has caused great confusion is ______ he made it without anyone else's help. A. What; that. B. What; how. C. It; how. D. It; that.【答案】 B【解析】【分析】句意：让人极大困惑的是他如何在没有别人帮助的情况下做到这一点的。

表示“让人困惑的事情”用what引导主语从句，表示“如何做到的”用how表方式，引导表语从句。

故选B.【点评】考查名词性从句，本题涉及what引导的主语从句和how引导的表语从句。

2． is clear to the members of the committee is that the President will not give in to their demands.A. WhoB. ItC. AsD. What【答案】 D【解析】【分析】句意：委员会成员清楚的是，总统不会向他们的要求让步。

that the President will not give in to their demands.这个句子作表语； is clear to the members of the committee这是主语从句，这里缺少主语从句的连接词，并且连接词在句中作主语，it是代词，不是了；连接词，故排除B；as作主语时，是在定语从句中，故排除C；who指人，根据表语指的事情，不是人，故排除A；what在主语从句中可以作主语或宾语，指事，符合句意，故选D。

【点评】考查名词性从句，本题涉及what引导的主语从句。

3．Has it been announced ______?A. when are the planes to take offB. that are the planes to take offC. where are the planes to take offD. when the planes are to take off【答案】 D【解析】【分析】句意: 飞机什么时候起飞已经宣布了吗？此处是when引导的主语从句，且要用陈述句语序，故选D。

名词性从句知识点总结及经典习题(含答案)经典1

名词性从句知识点总结及经典习题(含答案)经典1一、名词性从句1．_______is known to us all is that Johnson broke his promise ______ he would come to help me as soon as possible.A. It; thatB. What; thatC. As; whichD. What; which【答案】 B【解析】【分析】句意：我们都知道，Johnson违背了他会尽快来帮助我的诺言。

分析句子结构可知，第一空为主语从句，从句中缺少主语，所以用what，第二空为同位语从句，从句结构完整，所以用that解释promise的内容，故选B。

【点评】考查名词性从句，本题涉及主语从句和同位语从句。

2．While some behaviors may seem strange to you, remember you consider normal probably seems just as unusual to others.A. it; thatB. what; thatC. that; whatD. which; that【答案】 C【解析】【分析】句意：虽然有些行为对你来说可能很奇怪，但请记住，你认为正常的行为对别人来说可能也不寻常。

第一空为宾语从句，从句结构完整用that起连接作用，第二空为主语从句，从句中consider缺少宾语，应该用what，故选C。

【点评】考查名词性从句，本题涉及that引导的宾语从句和what引导的主语从句。

3．________ is known to us all that the old scientist, for ________ life was hard in the past, still works hard in his eighties.A. As; whoseB. It; whoseC. As; whomD. It; whom【答案】 D【解析】【分析】句意：我们都知道，那位老科学家，过去生活很艰苦，到了八十多岁还在努力工作。

高考英语语法名词性从句专题讲解练习含答案

名词性从句包括主语从句、宾语从句、表语从句和同位语从句。

名词性从句是一种具有名词功能的非独立分句。

具体用法见下表：主语从句大多数主语从句都可以用it作形式主语而把主语从句置于句尾。

(what引导的主语从句表示“……的东西”时，一般不用it作形式主语；whatever, whoever, whichever一般也不用it作形式主语。

)►It makes no difference where we shall have the meeting.我们在哪开会无所谓。

【注意】(1)常见的it替代that引导的主语从句的句式主要有以下几种：①It＋系动词＋形容词(necessary/right/likely/important/certain...)＋that从句②It＋be＋名词(短语)(a pity/a shame/good news/a fact/an honour...)＋that从句③It＋be＋过去分词(said/told/heard/reported/decided/suggested...)＋that从句④It＋特殊动词(seem/appear/happen/matter)＋that从句(2)在“It is necessary/important/natural...＋that从句”的结构中，从句谓语常用“(should ＋)动词原形”。

宾语从句1．动词find, feel, think, consider, make, believe等后有that引导的宾语从句作宾语补足语时，则常用it作形式宾语而将that宾语从句后置。

►I think it necessary that we take plenty of boiled water every day.我认为每天摄入足量的白开水很有必要。

2．有些动词(短语)不能直接跟宾语从句，需要借助形式宾语it。

常见的有hate, enjoy, like, dislike, love, appreciate, see to等。

高中英语名词性从句详细讲解与练习（附答案）

高中英语名词性从句详细讲解与练习在句子中起名词作用的从句叫名词性从句。

名词性从句的功能相当于名词词组，它在复合句中能担任主语、宾语、表语、同位语，因此根据它在句中不同的语法功能，名词性从句又可分为主语从句、宾语从句、表语从句、同位语从句。

引导名词性从句的词叫做连接词，包括：1.连词（在名词性从句中只起连接作用，不作成分）2.连接代词（在名词性从句中作主语、宾语或表语）3.连接副词（在名词性从句中作状语）所有的名词性从句的语序都是陈述语序。

I主语从句：是在主句中作主语的从句。

它由连接词引导，通常位于谓语动词之前。

连接词：1.连词：在从句中不充当任何成分，常见的引导主语从句的连词有that, whether oThat he got the first prize excited him much.他获得一等奖一事使他非常兴奋。

It is doubtful whether we can get there on time.我们能否按时到达那儿还不确定。

D that引导的主语从句:在从句中不作任何成分，也没有实际意义。

一般情况下that不可省略。

That light travels in straight lines is known to all.众所周知，光沿直线传播。

That you don't like him is none of my business.你不喜欢他不关我的事。

2）whether引导的土语从句:常置于句首，表示“是否”之意；if一般不引导主语从句。

Whether he can finish his task on time is of greatimportance.他是否能按时完成任务非常重要。

Whether you can succeed or not depends on howhard you work at it.你能否成功取决于你努力的程度。

2.连接代词：在从句中起名词或代词的作用，常作从句的主语、宾语、表语或定语,有具体意义且不能省略。

名词性从句知识点总结及经典习题(含答案)(1)

名词性从句知识点总结及经典习题(含答案)(1)一、名词性从句1．_______is known to us all is that Johnson broke his promise ______ he would come to help me as soon as possible.A. It; thatB. What; thatC. As; whichD. What; which【答案】 B【解析】【分析】句意：我们都知道，Johnson违背了他会尽快来帮助我的诺言。

分析句子结构可知，第一空为主语从句，从句中缺少主语，所以用what，第二空为同位语从句，从句结构完整，所以用that解释promise的内容，故选B。

【点评】考查名词性从句，本题涉及主语从句和同位语从句。

2．It has been pointed out ________ plays a vital role in driving away one's anxiety is one's sweet childhood memories.A. what thatB. whichC. thatD. that what【答案】 D【解析】【分析】句意：有人指出，驱除焦虑所起着至关重要的作用是童年美好的回忆。

本句时一个主语从句，it作形式主语，真正的主语为that what plays a vital role in driving away one's anxiety is one's sweet childhood memories.，主语从句中又有一个主语从句，且此主语从句中缺少主语，所以用what引导。

故选D。

【点评】考查名词性从句，本题涉及what引导的主语从句。

3． is clear to the members of the committee is that the President will not give in to their demands.A. WhoB. ItC. AsD. What【答案】 D【解析】【分析】句意：委员会成员清楚的是，总统不会向他们的要求让步。

高考名词性从句讲解、习题及答案

名词性从句名词性从句（主语从句，表语从句，宾语从句，同位语从句）1.that 引导的名词性从句，that 在从句中不充当任何句子成分，没有词义。

that引导宾语从句时常可省略，但如果引导两个以上宾语从句时，that不省。

引导主语从句时常可用it 作形式主语That light travels in straight lines is known to all.众所周知光是以直线运行的。

（主语从句）=It is known to all that light travels in straight linesThe reason for his absent was that he was ill.他缺席的原因是他病了。

（表语从句）I think( that) you are right.我认为你是对的。

（宾语从句）The news that our football team has won is true.我们足球队赢了的消息是真的。

（同位语从句）注意区别：The news( that/which) he told me is true.他告诉我的消息是真的。

（定语从句）2.what 引导的名词性从句，what 在从句中必须要作主语，宾语，表语,常译作“所---的”或“什么”,what 一般不引导同位语从句What we need is water.我们所需要的是水。

（主语从句）What we need are useful books.我们所需要的是有用的书。

（主语从句）This is what I want to say.这就是我想说的。

（表语从句）Please tell me what she is saying.请告诉我她在说什么。

（宾语从句）3.how,where,when,why,等引导的名词性从句，保留疑问词的原意，或译为-“--的地方”“---的时候”Do you know how he came here?By bus.你知道他是怎么来的吗？乘公共汽车。

(word完整版)名词性从句讲解及专项练习习题及其解答

名词性从句讲解在复合句中起名词作用的从句叫做名词性从句.它包括主语从句、宾语从句、表语从句和同位语从句。

名词性从句是中学阶段的一个重要语法项目,在历年的高考中几乎都涉及到，并且每年的命题各有变化。

分析历届高考试题名词性从句考查的焦点主要有以下六个方面1. 考查名词性从句的语序问题2. 考查引导词that与what的区别3. 考查it在名词性从句中作形式主语或形式宾语的用法 4。

考查whether与if的区别5。

考查名词性从句中的疑问词+ever引导的名词性从句与no matter+疑问词引导的状语从句的区别6。

考查名词性从句的虚拟语气问题语法要点剖析一、名词性从句主语从句、表语从句、宾语从句、同位语从句,在整个句子中所起的作用，相当于一个名词.因此,这四种从句通称为名词性从句.引导名词性从句的连接词可分为三类:连接词：that， whether, if （不充当从句的任何成分)连接代词：what, whatever, who, whoever, whom， whose, which。

连接副词：when, where, how, why1. 主语从句作句子主语的从句叫主语从句.主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever,whoever以及连接副词how,when，where,why等词引导。

that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用,在从句中充当从句的成分。

例如：What he wants to tell us is not clear。

他要跟我们说什么，还不清楚.It is known to us how he became a writer。

我们都知道他是如何成为一名作家的.Where the English evening will be held has not yet been announced.英语晚会将在哪里举行，还没有宣布。

名词性从句用法讲解与专项练习题及答案

名词性从句用法讲解与专项练习题及答案名词性从句包括主语从句、宾语从句、表语从句和同位语从句。

高考常从连接词的选择、语序、语气、时态等方面来考查。

名词性从句中的连接词有连词that / whether / as if，连接代词what / who/ which /whose / whatever / whoever / whomever / whichever，连接副词where /when /why / how / wherever / whenever。

第1讲引导名词性从句的连接词\考点1. 引导名词性从句的连接词有哪些有学生认为，引导同位语从句只能用that, 这句话对吗先看下面几个句子。

①I have no question that he will come.②I have a question whether he will come③I have a question when he will come.我们可以看出：上面三个句子中question后面都是同位语从句，都是说明question的内容的。

~在句①中，同位语从句的原句是陈述句，由that引导；在句②中，原句是一般疑问句，由whether引导；在句③中，同位语从句的原句是特殊疑问句，特殊疑问词也起着连接作用。

其实，所有名词性从句的连接词都有上面的三种情况。

宾语从句：I don’t know that he will come.I don’t know whether/if he will come.I don’t know when he will come.【表语从句：What I don’t know is that he will come.What I don’t know is whether he will come.What I don’t know is when he will come.主语从句That he will come is obvious.Whether he will come isn’t known yet.When he will come isn’t known yet.^1. 【2010浙江】It is uncertain ______ side effect the medicine will bring about, although about two thousand patients have taken it.A. thatB. whatC. howD. whether2. 【2012全国新课标】It is by no means clear ______ the president can do to end the strike.A. howB. whichC. thatD. what3. 【2012山东】It doesn’t matter ______ you pay by cash or credit card in this store.A. howB. whetherC. whatD. why4. 【2013陕西】It remains to be seen ______ the newly formed committee’s policy can be put into practice.]A. thatB. whichC. whatD. whether5. 【2009天津】It is obvious to the students ______ they should get well prepared for their future.A. asB. whichC. whetherD. that6. 【2012江西】It suddenly occurred to him ______ he had left his keys in the office.A. whetherB. whereC. whichD. that考点2. 引导词that的省略问题主语从句、表语从句、同位语从句中连词that不能省略。

完整)高中名词性从句练习题及答案详解

完整)高中名词性从句练习题及答案详解1.The Children's Palace was the place that interested me most.2.Do you know the man that I spoke to?3.This is the hotel where they stayed last month.4.Do you know the year when the Chinese Communist Party was founded?5.That is the day when I'll never et.6.The factory we will visit next week is nearby.7.XXX.8.This is one of the best films that has been shown this year.9.Can you lend me the book that you talked about the other day。

XXX:In sentence 1."interested me most" should be placed after "the place"。

Sentence 2 is correct。

In sentence 3."at" should be removed and "where" should be placed before "they stayed"。

Sentence 4 is correct。

In sentence 5."on" should be placed before "which"。

In sentence 6."not far from here" can be XXX "nearby" and "to" should be XXX "that"。

高中语法名词性从句讲解和练习有答案

高中语法名词性从句讲解和练习有答案高中英语语法之名词性从句在句子中起名词作用的句子叫名词性从句(Noun Clauses）。

名词性从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词性从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。

一、引导名词性从句的连接词引导名词性从句的连接词可分为三类：连词：that（无任何词意）whether,if（均表示“是否”表明从句内容的不确定性）as if ,as though （均表示“好像”，“似乎”）以上在从句中均不充当任何成分连接代词：what, whatever, who, whoever, whom,whose, whichever,whomever连接副词：when, where, how, why,how many,how much,how often不可省略的连词：1. 介词后的连词2. 引导主语从句和同位语从句的连词不可省略。

That she was chosen made us very happy. We heard the news that our team had won.比较：whether与if 均为"是否"的意思。

但在下列情况下，只可用whether：1. whether引导主语从句并在句首2. 引导表语从句3. whether从句作介词宾语4. 从句后有"or not"Whether he will come is not clear.大部分连接词引导的主语从句都可以置于句末，用it充当形式主语。

It is not important who will go. It is still unknown which team will win the match.二. 主语从句1、作句子主语的从句叫主语从句。

主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever，whoever 以及连接副词how，when，where，why等词引导。

高中名词性从句讲义及练习

第四章名词性从句学习目标1.掌握名词性从句的概念和分类，并能识别出名词性从句2.掌握主语从句的连接词、语序、时态的用法3.掌握表语从句的连接词、语序、时态的用法4.能熟练理解名词性从句的含义并能进行长难句分析识记一、名词性从句概念及分类名词性从句是指在句子中相当于名词作用的从句，通常充当主句的主语、宾语、表语等成分。

名词性从句主要包括__________从句、__________从句、__________从句和__________从句。

e.g.That the boy failed again in the exam disappointed his mother. （__________从句）I know that he is writing his composition in his room. （__________从句）The question is how we can finish it on time. （__________从句）The fact that some Chinese are still poor is really a great problem. （__________从句）二、名词性从句连接词一、主语从句位于句首，常用____做形式主语e.g. That he will come and help you is certain. (that不充当从句内的任何成分，____省略)Whether there is life on the moon is an interesting question. (whether不充当从句内的任何成分，不能用____)What he wants to tell us is not clear. (what充当从句内的_____)Who will win the match is still unknown. (who充当从句内的_____)Where the English evening will be held has not yet been announced.(where充当从句内的_____语)Whatever he said was right. (whatever充当从句内的_______)It is known to us how he became a writer. (it为形式主语，代替how引导的____从句)【主语从句要点拓展】1. it做形式主语的结构(1) It’s a pity/ a shame/ an honor/ a fact/ no wonder/ common sense/ good news that… 遗憾的是（荣耀的是、事实是、难怪是、常识是，好消息是……）e.g. It is a pity that you didn’t attend the lecture yesterday.(2) It’s clear/right/true/certain/necessary/(un)likely/important/(im)possible/obvious/remarkablethat… ……很清楚（正确，必要，重要，可能，值得注意等)e.g. It is likely that there will be a snowstorm tomorrow.(3) It is well-known/reported/recorded/estimated/said/believed that…众所周知（据报道，据记载，据估计，据说，据人们相信)…e.g. It is said that his father left him nothing.(4) It turns out/seems/appears/happens/matters…) that…结果是……（似乎是, 碰巧是, 重要的是……）e.g. It happened (to me) that I had been away when he called.2. it做形式主语与it is(was)… that…强调句式的区分e.g. It is a pity that you didn’t go to see the film.It is in the morning that the murder took place.解题方法：将it is/was… that 去掉，看余下部分是否完整，若完整即为强调句式；反之为it作形式主语。

高中名词性从句精简讲解与练习(含答案)

名词性从句用法详解一、概说名词性从句，即指性质相当于名词的从句，它包括主语从句、宾语从句、表语从句和同位语从句。

从高考的考查的实际情况来看，名词性从句考得最多的是宾语从句，其次是主语从句，再次是表语从句，而同位语从句则很少考查。

引导名词性从句的连接词可分为三类：连接词：that, whether, if （不充当从句的任何成分）连接代词：what, whatever, who, whoever, whom, whose, which.连接副词：when, where, how, why二、名词性从句的一般引导词1. 连接词that 只起连接作用，没有任何意思，也不充当句子成分，在宾语从句中可省略，但引导其他名词性从句时通常不省略。

I hope (that) you enjoy your holiday. 希望你假期过得好。

（宾语从句）That he likes you is very obvious. 很显然他喜欢你。

（主语从句）2. 连接词whether 也不充当句子成分，但有自己的意思，表示“是否”；引导宾语从句时，可换成if，但引导其他名词性从句时不能换成if。

如：He asked whether [if] I would show him the way. 他问我是否可以给他带路。

Whether it will do us harm remains to be seen. 是否对我们有害还要看一看。

(引导主语从句，不能用if 代替whether)3. 连接代词who(m), whose, which, what 等，均有各自的意义，在从句中作主语、宾语、定语等。

如：That’s what she wanted to do. （表语从句）Who will help us is not known. （主语从句）Tell me which one you like best. （宾语从句）4. 连接副词when, where, why, how 等，也各自有自己的意义，在从句中作状语。

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高中英语讲义---- 名词性从句（主从、表从、宾从，同从）1，陈述句做名从用连词that + SV, that 表主句肯定从句完整，不做成分。

主从可用it 做形式主语，宾从第一个that 可省略。

连接代词（what/which/who/whose…）表主句不肯定从句不完整，连接副词（when/where/why/how）表主句不肯定从句完整。

Where did you go just now ?主从：Where you went just now isn’t clear.= It isn’t clear where you went just now.表从：My question is where you went just now.宾从：I wonder where you went just now.同从：My question where you went just now isn’t clear.●当主句为现在时态从句时态不受影响，当主句为过去时态从句就应该变成过去的某种时态，但客观真理总用一般现在时，有固定过去时间总用过去时。

高频考点1，当主从句都缺成分时指物用what/whatever/whichever(有范围), 指人用whoever / whomever(做宾语).The buildings have built in _what_ was farmland. _What_ you need is courage.The prize will be awarded to _whoever_ has won the game. You can choose _what/whatever/whomever_ you like.Of all, you can choose _whichever_ you like .2, No matter+疑问词，只能引导让步状语从句（主从句逗号分开），疑问词+ever 既可引导让步状从，又可引导名从（从句在主句中做成分）。

_No matter who / whoever-has broken the law , he ‘ll be punished ._Whoever_ has broken the law will be punished.3, 抽象名词（fact, news/word, hope, desire, thought, suggestion, idea, problem, possibility/chance ,rumor,concept…）后常用that 引导同从。

News /word came that you had passed the exam.There is no possibility/ chance that he’ll come.练习11.If you swim in a river or lake, be sure to investigate _____ is below the water surface. Often there are rocks orbranches hidden in the water.2.I truly believe _____ beauty comes from within.3._____ we understand things has a lot to do with what we feel.4._____ Li Bai, a great Chinese poet, was born is known to the public, but some won’t accept it.5.We must find out _____ Karl is coming, so we can book a room for him.6. A ship in harbor is safe, but that’s not _____ ships are built for.7.----I wonder _____ Mary has kept her figure after all these years.----By working out every day.8.You have to know _____ you’re going if you are to plan the best way of getting there.9.Reading her biography, I was lost in admiration for _____ Doris Lessing had achieved in literature.10.The exhibition tells us _____ we should do something to stop air pollution.11.“Every time you eat a sweet, drink green tea.” This is _____ my mother used to tell me.12.I think _____ impresses me about his painting is the colors he uses.13.It is difficult for us to imagine _____ life was like for slaves in the ancient world.14.----Is it true that Mike refused an offer from Yale University yesterday?----Yeah, but I have no idea ____ he did it; that’s one of his favorite universities.15.Pick yourself up. Courage is doing _____ you’re afraid to do.16.Exactly _____ the potato was introduced into Europe is uncertain, but it was probably around 1565.17.----What a mess! You are always so lazy!----I’m not to blame, Mum. I am ______ you have made me.18.As John Lennon once said, life is ______ happens to you while you are busy making other plans.19.Grandma pointed to the hospital and said, “That’s _____ I was born.”20.The only way to succeed at the highest level is to have total belief _____you are better than anyone else on thesports field.21.Experts believe _____ people can waste less food by shopping only when it is necessary.22._____ I want to tell you is the deep love and respect I have for my parents.23._____ struck me most in the movie was the father’s deep love for his son.24._____ makes the book so extraordinary is the creative imagination of the writer.25.Do not let any failures discourage you, for you can never tell _____ close you may be to victory.26.From space, the earth looks blue. This is _____ about seventy-one percent of its surface is covered by water.27._____ one of you breaks the window will have to pay for it.28.It remains to be seen _____ the newly formed committee’s policy can be out into practice.29._____ you said at the meeting describes a bright future for the company.30.It is by no means clear _____ the president can do to end the strike.练习21.The Beatles were in many ways pioneers for _____ was to come, like holding concerts in sports stadiums.2.Blind people have their own ways to tell the shape of an object and _____ it is day or night.3.----Do you enjoy the latest movies?----Yeah, I will go for _____ is on.4.When you are reading, make a note of _____ you think is of great importance.5.His writing is so confusing that it’s difficult to make out _____ it is that he is trying to express.6.If you are going to kill the snake, you have to get close to _____ the head is and cut it off.7.The Peony Pavilion, a play written by Tang Xianzu, is _____ many people regard as the most romantic story inChinese literature.8.There is no doubt _____ the famous professor will come to give us a lecture.9.How grateful I am to my grandfather for his advice _____ whatever trouble I come across, being calm is a must.10.A warm thought suddenly came to me _____ I might buy some flowers for my friend’s mother’s 60th birthday.11.That company wants to reduce prices to increase its market share, and this is _____ we differ from it.12.Dozens of people were waiting with a camera for _____ seemed like hours, hoping to catch a glimpse of the USFirst Lady, Michelle Obama.13.We have learned from the story that _____ is most valuable is not what we have in our lives but _____ we havein our lives.14._____ he considered a great proposal was turned down by the boss at the meeting.15.Choosing the right dictionary depends on _____ you want to use it for.16.With many cities in China dreadfully blanketed by thick haze, the environment problem is _____ Chinese peopleconcern most nowadays.17.What is concerning us greatly is _____ the workers held up in that area yesterday will be set free.18.Steve Job’s success in digital field proved _____ it took to be a best CEO.19.The problem is _____ we can improve our reading skills in such a short time.20.----It’s my treat today. Is there anything particular you would like to have?----_____ you choose is fine with me.21.The practical suggestion came from the representatives _____ the new rule be adopted.练习3It was reported __1__ there was an accident at a corner of the Roman Street this morning. No one saw __2__ on earth happened then. A car ran into a truck but fortunately, nobody got injured. __3__ will be responsible for the accident is still under investigation. The police were uncertain about __4__ the driver was guilty. __5__ the police should do now is __6__ they must find out what led to the accident. They said it was difficult for them to judge because __7__ the accident happened is not clear. Perhaps the reason was __8__ the driver was too tired to stop the car in time. The driver didn’t admit the fact __9__ he was over-speed driving at the turning. The police doubted __10__ what he said was true and decided to make a further investigation.参考答案练习11.what 句意：如果你在河里或湖里游泳，一定要查明水下的状况。