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名词性从句语法填空专题
考点一 主语从句
真题体验
1. ________ (what) he said at the meeting surprised everyone present.
2. It is known to us all ________ (that) the earth moves around the sun.
3. ________ (whether) he will come or not is still unknown.
4. ________ (whoever) breaks the law should be punished.
知识点拨
引导主语从句的连接词有从属连词that、whether；连接代词what、whatever、who、whoever、whom、whomever、which、whichever；连接副词where、when、why、how等。that在主语从句中只起连接作用，无意义，且不能省略；whether意为“是否” ，不充当成分，但不能用if替换；连接代词和连接副词在从句中既起连接作用，又充当相应的成分。当主语从句较长，而谓语较短时，常用it作形式主语，将真正的主语从句后置。
即时演练
1. ________ (when) we will start the project hasn't been decided yet.
2. ________ (how) he managed to solve the problem is a mystery.
3. It is clear ________ (that) he has made great progress in his studies.
4. ________ (whichever) team wins on Saturday will go through to the national championships.
5. ________ (whatever) you do, you should do it well.
考点二 宾语从句
真题体验
1. I don't know ________ (if/whether) he will come tomorrow.
2. She told me ________ (that) she had finished her homework.
3. Do you know ________ (who) is singing in the next room
4. He asked me ________ (where) I had been during the summer vacation.
知识点拨
引导宾语从句的连接词与主语从句类似。在动词、介词或某些形容词（如sure、certain、glad等）后常接宾语从句。that引导宾语从句时，在口语和非正式文体中常可省略；if和whether引导宾语从句时，常可互换，但在介词后、直接与or not连用或在动词不定式前，只能用whether。当主句的谓语动词是think、believe、suppose等时，若宾语从句是否定句，要将否定转移到主句中。
即时演练
1. I wonder ________ (if/whether) it will rain tomorrow.
2. He said ________ (that) he would go to Beijing next week.
3. Please tell me ________ (which) book you like best.
4. I'm not sure ________ (how) I can get to the railway station.
5. I don't think ________ (that) he will pass the exam.
考点三 表语从句
真题体验
1. The question is ________ (whether) we can finish the work on time.
2. That's ________ (why) he was late for school this morning.
3. My dream is ________ (that) I can become a famous singer one day.
4. The reason for his success is ________ (that) he works very hard.
知识点拨
表语从句位于系动词（如be、seem、look、remain等）之后。引导词的用法与主语从句、宾语从句基本相同，但要注意“the reason...is/was that...”结构中，只能用that引导表语从句，不能用because。另外，as if/though也可引导表语从句，表达“好像”的意思。
即时演练
1. The problem is ________ (how) we can improve our English.
2. It looks ________ (as if/though) it is going to rain.
3. His suggestion is ________ (that) we should go there by bike.
4. That's ________ (where) I lost my keys.
5. The fact is ________ (that) he has never been abroad.
考点四 同位语从句
真题体验
1. The news ________ (that) our team won the game excited us all.
2. I have no idea ________ (when) he will come back.
3. The thought ________ (that) he might fail in the exam worried him.
4. She got the message ________ (that) she had been admitted to her dream university.
知识点拨
同位语从句用于对前面的名词（如news、idea、fact、thought等）作进一步解释说明，通常用that引导，that在从句中只起连接作用，无意义，且不能省略。有时也可用whether、when、where、how等词引导同位语从句，这些词在从句中充当相应成分。区分同位语从句和定语从句：同位语从句中，从句与先行词是等同关系；定语从句中，从句是对先行词的修饰限定。
即时演练
1. The fact ________ (that) he is a famous scientist is known to everyone.
2. I have no doubt ________ (that) he will succeed.
3. The question ________ (whether) we should go there by bus or by train remains to be discussed.
4. They received the order ________ (that) they must arrive at the destination before dawn.
5. I got the impression ________ (that) she didn't like me.
【命题热点】
一、名词性从句在语法填空中的命题点
A. 考查连接词的选择。根据从句的意义和成分，选择合适的连接词。
________ (what) you said just now is very important.（从句中said缺少宾语，用what）
B. 考查it作形式主语或形式宾语的结构。
It is believed ________ (that) he will win the competition.（it作形式主语，真正的主语是that引导的从句）
C. 考查名词性从句中的语序问题，名词性从句要用陈述语序。
I don't know ________ (where he lives).（不能写成where does he live）
二、名词性从句在短文改错中的增分点
A. 连接词的误用。
I don't know if he is right or not.（if应改为whether，因为与or not连用）
B. 从句语序错误。
Can you tell me where is the nearest hospital （应改为where the nearest hospital is）
C. 同位语从句与定语从句的混淆。
The news which he told me made me happy.（这里which引导的是定语从句，若表示“他告诉我他成功的消息”，应改为The news that he succeeded made me happy.，that引导同位语从句）
三、名词性从句在书面表达中的增分点
1. 运用名词性从句使表达更加多样化。
我认为我们应该多参加户外活动，这对我们的健康有好处。I think that we should take part in more outdoor activities, which is good for our health.（宾语从句和定语从句结合）
2. 用主语从句提升文章档次。
无论谁违反规则都应该受到惩罚，这是很重要的。Whoever breaks the rules should be punished. It's very important.（前半句是主语从句）
【综合检测】
一、单句语法填空
1. ________ (who) will be our new teacher is still unknown.
2. I'm sure ________ (that) he will pass the exam.
3. The problem is ________ (how) we can get enough money.
4. Do you know ________ (when) the meeting will start
5. It is reported ________ (that) a new bridge will be built in our city.
6. I have no idea ________ (where) I can find my lost keys.
7. The reason for his failure is ________ (that) he didn't study hard.
8. She asked me ________ (if/whether) I had seen the movie.
9. ________ (whatever) you do, don't give up easily.
10. The fact ________ (that) he is a good student is well - known to all.
二、语篇填空
I've always been curious about 1________ the world was like in the past. One day, I found a book in the library 2________ talked about ancient civilizations. It said 3________ some of these civilizations were very advanced.
The book also raised a question 4________ we could learn from these ancient cultures. I think 5________ we should study them carefully. It's clear 6________ they had a lot of wisdom.
There's an old story 7________ a wise man taught people how to grow crops. The story made me realize 8________ knowledge was very important in the development of human society.
I'm eager to know more 9________ other civilizations. I believe 10________ exploring the past can help us better understand the present and build a better future.
答案
一、1. Who 2. that 3. how 4. when 5. that 6. where 7. that 8. whether 9. Whatever 10. that
二、1. what 2. which/that 3. that 4. whether 5. that 6. that 7. that 8. that 9. about 10. that

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