高中六大从句讲解及练习题总结

1.主语从句

1）主语从句可直接位于主语的位置，如果从句较长，谓语又较短，可用it作形式主语，而将从句放在句末。常见的句型有：

*It is a fact\a pity\a question\good news that...

*It seems\appears\happened\has turned out that...

*It is clear\important\likely\possible that...

*It is said\reported \has been proved that...

It seems that the performance is very useful.

2)what引导的主语从句表示“...的东西时”，一般不用it作形式主语。

*What we lack is experience.

3)what,who,when,why,whether等词含有各自的疑问意义，但它们引导的主语从句，都用陈述语序。

*How the plan is to be carried out should be discussed again.

*I did not know why I felt like crying.

练习：

1. It worried her a bit ____ her hair was turning grey.

A. while

B. that

C. if

D. for

2. ________ makes mistakes must correct them.

A. What

B. That

C. Whoever

D. Whatever

3. ________ Tom liked to eat was different from ________.

A. That…that you had expected

B. What …that you had expected

C. That…what you had expected

D. What…what you had expected

4. It ________ Bob drives badly.

A. thinks that

B. is thought what

C. thought that

D. is thought that

5. ____ we'll go camping tomorrow depends on the weather.

A. If

B. Whether

C. That

D. Where

2.宾语从句

1）宾语从句可位于及物动词、介词和某些形容词后。连词that常可省略。介词后一般接疑问词引导的宾语从句。in that(因为),except that(除了),but that(只是）已构成固定搭配，其他介词后一般不接that引导的宾语从句。

*I promised that I would change the situation. （vt）

*All this is different from what American young people would say about friendship. （prep）

*He is certain that watching so much television is not good for children. （adj） *This article is well-written except that it is a bit too long. (介词的固定搭配）

2)宾语从句后如有宾补，要用形式宾语it来代替，而把宾语从句移至宾补之后。

* He has made it clear that he would not change his mind.

3)在think,believe,suppose,expect等动词后的宾语从句中，如果谓语是否定的，一般将否定词移至主句谓语上，宾语从句则变成肯定形式。

* He didn't think that the money was well spent.

练习：

1．—What did you parents think about your decision?

—They always let me do ________ I think I should．

A． when B． That C． how D． What

2．Please remind me _________ he said he was going． I may be in time to see him off．

A． where B． when C． how D． what

3．Mary wrote an article on ________ the team had failed to win the game．

A．Why B．what C．who D．That

4．Someone is ringing the doorbell Go and see________．

A ．who is he B． who he is C． who is it D． who it is

3.表语从句

表语从句出现在结构为“主语+系动词+表语从句”的句子中。表语从句除可用that,what,when,why,whether,how等引导外，还可由because,as if(though)等引导。that 常可省略。如主句主语为reason,只能用that引导表语从句，不可用because.

*Perhaps the most important thing to remember is that there is no one common type of life in America.

*The reason why so many people died there is that there were not enough food supplies.

* It looks as if successful international cultural communication will make the world smaller.

练习：

1 —I drove to Zhuhai for the air show last week .

—Is that_____ you had a few days off？

A. why B .what C. when D. where

2 .I had neither a raincoat nor an umbrella ____I got wet through.

A. It’s the reason

B. That’s why

C. There’s why

D. It’s how

3. See the flags on top of the building? That was ______ we did this morning.

A. when

B. which

C. where

D. what

4. --- Are you still thinking about yesterday’s game?

---Oh, that’s _____.

A. what makes me feel excited

B. whatever I feel excited about

C. how I feel about it

D. when I feel excited

4.同位语从句

同位语从句用于对前面出现的名词作进一步说明，一般用连词that引导，由于先行名词的意义不同，也可用whether,who,when,where,what,why,how等引导。常见的先行名词有 fact,idea,belief,news,hope,conclusion,suggestion,order,problem,report,decision. 有时由于谓语较短，将同位语从句位于谓语之后。