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主语从句知识点精讲小结精析概要

2022-11-12| 发布者: 辉南生活网| 查看: 135| 评论: 1|文章来源: 互联网

摘要: 主语从句知识点精讲小结精析概要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......
主语从句知识点精讲小结精析概要
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。
有时为避免句子头重脚轻,常用形式主语it代替主语从句作形式主语放于句首,而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下:
(1)It + be + 名词 + that从句 (2)It + be + 形容词 + that从句
(3)It + be + 动词的过去分词 + that从句 (4)It + 不及物动词 + that 从句
另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时,谓语动词要用虚拟语气“(should) +do”,常用的句型有:
It is necessary (important, natural, strange, etc.) that … 

It is a pity (a shame, no wonder, etc.) that… 

刷题王
单词快速记忆法
新概念英语青少版

It is suggested (requested, proposed, desired, etc.) that…
注意:连词that, whether在从句中不担任句子成分,只起连接作用,不能省略。并且whether引导主语从句时不能用if代替。
Whether there is life on the moon is an interesting question. 月球上有没有生命是个有趣的问题。
注意:who, which, how, when, where, why在所引导的主语从句中可担任主语,宾语,状语,不能省略。可以用形式主语it引导。

1. His success was because of ________ he had been working hard.
A. that B. the fact which C. the fact that D. the fact
2. “Is Mary from New York City” “I don't know _______.”
A. from what city does she come from B. from what city she come
C. what city does she come from D. what city she comes from
3. ________ makes mistakes must correct them.
A. What B. That C. Whoever D. Whatever
4. The reason why I didn't go to Shanghai was ________ a new job.
A. because I got B. because of getting C. I got D. that I got
5. It worried her a bit ____ her hair was turning grey.
A. while B. that C. if D. for 
6. Henry killed the dog. I'll ask him why ________.
A. did he do that B. he did that C. he did D. he has done so 
7. Have you seen Henry lately. My boss wants to know ________.
A. how he is getting along B. how is he getting along
C. what he is getting along D. what is he getting along
8. It is generally considered unwise to give a child ____ he or she wants.
A. however B. whatever C. whichever D. whenever
9. He asked me ________ with me.
A. what is the trouble B. what wrong was
C. what was the matter D. what trouble it is
10. I am sure ________ he said is true.
A. that B. about that C. of that D. that what


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