高考英语名词性从句高频考点易混点高频考点一：考查that与what的区别在引导名词性从句时，从属连词that一般要注意三个"不"：1.不省略。
当从属连词that引导的主语从句位于句首时，that不省略；that引导同位语从句时，一般不省略。
2.不作成分。
that 在名词性从句中不作任何句子成分。
3.无实义。
that 在名词性从句中没有实义。
在引导名词性从句时， what一般要注意一个"不",一个"有词义",一个"作成分"：1.不省略。
what 引导名词性从句时，不省略。
2.有词义。
what 引导名词性从句时，有词义。
一般表示"……的东西/事情等"，这一用法与that 的用法不一样。
3.作成分。
what 在引导名词性从句时，在从句中充当成分。
这一用法与that 的用法不一样。
例如：Nobody believed his reason for being absent from the class that he had to meet his uncle at the airport.该句中，that引导同位语从句，在句中不作任何成分，不能省略且无词义。
What the teacher said had a good effect on the children.what引导主语从句，在句中有词义。
高频考点二：it放在句首，真正的主语是that从句常用句型如下：① It+系动词+n.+ that从句;② It+系动词+adj.+ that从句;③ It+be+动词的过去分词形式（如said, reported, suggested等）+that从句；④ It+特殊动词（appear, seem, happen, matter, turn out, work out等）+that从句。
高频考点三：考查whether与if的区别whether与if在作"是否"讲时,是可以互换的。
名词性从句的难点与考点难点1：正确理解what的含义1.（NMET 2002上海）Perseverance is a kind of quality, and that’s _____ it takes to do anything well.A．what B．that C．which D．why2. The seaside in Qingdao is so attractive that it draws a lot of tourists every year. Beautiful sunshine and soft sands make _____ it is.A. whatB. whichC. thatD. why3. _____ is it _____has made Peter _____ he is today?A.what; what; thatB. that; that;whatC. what; that; whatD. what; that; that4. A modern city has been set up in _____ was a wasteland ten years ago.(NMET 2004天津)A．what B．which C．that D．where5. The other day, my brother drove his car down the street at ____ I thought was a dangerous speed. (NMET 2004 上海春季)A．as B．which C．what D．that6. After _____ seemed a long time, he managed to work out this problem. A．that B．what C．which D．it7. A man’s worth lies not so much in _____ he has but in _____ he is.A. what; whoB. what; whatC. that; thatD. what; that8. If the south had won the war, _____ is now the United States might have been divided into several countries.A. whatB. whereC. thenD. that9. That was _____ was first called “India” by Columbus.A. whatB.whereC.the placeD. the place where10. In some countries, _____ are called “public schools” are not owned by the public.A. whichB. asC. whatD. that11. They boy dived into the water and after _____ seemed to be a long time, he came up again.A. whatB. thatC. itD. which12. It was not until dark _____ he found _____ he thought was the correct way to solve the problem.A. that; whatB. that; thatC. when; thatD.when, what13. Scientists believe native Americans arrived by crossing the land bridge that connected Siberia and _____ more than 10,000 years ago.A. this is AlaskaB. Alaska is nowC. is now AlaskaD.what is now Alaska14. Having traveled eight hours, we finally reached _____ is now a big city. A. which B. what C. where D. it总结：what表示“所……的内容”，这些内容可以是“……的话/东西/地方/时间/速度”等抽象的内容难点2：考查名词性从句语序1._____ get such a book?A. where do you think can IB. Do you think where can IC.Do you think when I canD. Where do you think I can2. I do n’t remember _____ at present.A. whom I should speak toB. who should I speakC. whom should I speak toD. with whom should I speak3. Living things are dying quickly. First we should ask _____ destroying them in the past years.A. people have played what part inB. people have played a part inC.what part people have played inD. what part have people played in4. The professor forgot _____.A. in which office the meeting would be held.B. whose office the meeting would beC. which office would the meeting be held inD. whose office was the meeting5. I have always been honest and straightforward, and it doesn’t matter_____I am talking to. （NMET 2004 广东）A．who is it B．who it is C．it is who D．it is whom6. I just wonder _____ that makes him so excited.A. why it doesB. what is itC. how it isD. what it is7. _____ be sent to work there?A. Who do you suggestB. Who do you suggest that shouldC. Do you suggest who shouldD.Do you suggest whom should8. _____ heat is different from temperature？A. How do you thinkB. How you thinkC. What do you thinkD. What you think9. _____ is the most useful invention?A. Do you think which of theseB. Which of these do you thinkC. Which of these you thinkD. You think which of these10. ____ you have seen both fighters, _____ will win?A. Since; do you think whoB. As; who you thinkC. When; whoeverD. Since; who do you think11. How surprising _____ he should have refused to come!A. is he thatB. he is thatC. is it thatD. it is that总结：在名词性从句中一律用陈述句的语序，即使从句表达的是疑问含义。
名词性从句的重难点第一篇：名词性从句的重难点名词性从句的重难点在句子中起名词作用的句子叫名词从句(Noun Clauses）。
名词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.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。
Who will win the match is still unknown.谁能赢得这场比赛还不得而知。
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。
