主語從句學習指要
用來作主語的句子叫做主語從句。如:
(1)when he was born is unknown. 他生于何時還不知道。
(2)what he did last night is being investigated. 他昨天晚上干了些什么正在調查之中。
在主語從句中須注意:
1. 主語從句一般用it作形式主語,放在句首,而將主語從句放到句末。如:
(1)it is possible that he has stolen the car. 很可能他偷了小車。
(2)isn’t it strange that he should not have passed the test? 他測試沒有通過,難道不奇怪嗎?
2. if引導主語從句時,只能用it作形式主語,放在句首,而將if引導的主語從句放到句末。如:
it is uncertain if he will leave for beijing tomorrow. 明天他是否去北京還不敢肯定。
3. that引導主語從句放在句首時,that不可省,但在句末口語中可省。如:
that he was ill yesterday is known now. 大家都已知道他昨天生了病。
4. 連接代詞引導主語從句只能放在句首。如;
(1)who has broken the glass is unknown. 誰打破了玻璃現在還不知道。
(2)what he wants is all here. 他所要的東西都在這里。
5. 主語從句中主句的謂語動詞一般用第三人稱單數形式,但what引導主語從句的主句謂語動詞的形式須根據句子的意思來判斷。如(from ):
(1)how he worked it out is still a secret. 他是如何把它做出來的還是一個秘密
(2)what they makes in this factory are tv sets. 他們在工廠里所做的東西就是電視機。
主語從句用法詳解(例句豐富)
一、主語從句的引導詞
主語從句通常由連詞that和whether、連接代詞或連接副詞以及關系代詞型what引導。
1. that引導
that he is still alive is a wonder. 他還活著,真是奇跡。
that we shall be late is certain. 我們要晚了,這是確定無疑的。
that he should have ignored the working class was natural. 他忽視工人階級是很自然的。
that she is still alive is a consolation. 她還活著是使人感到寬慰的。
that she became an artist may have been due to her father’s influence. 她成為畫家可能是受她父親的影響。
that you are coming to london is the best news i have heard this long time. 你將來倫敦是好久以來我聽到的最好消息。
that she was chosen made a tremendous stir in her village. 她被挑選上,在她村 子里引起很大轟動。
2. whether引導
whether it will do us harm remains to be seen. 是否對我們有害還要看一看。
whether they would support us was a problem. 他們是否會支持我們還是一個問題。
3. 連接代詞引導
whoever is top from wins the game when two matched players meet. 兩強相爭勇者勝。
whichever (of you) comes in first will receive a prize. 無論(你們)誰先到都可以得獎。
whichever you want is yours. 你要哪個哪個就是你的。
4. 連接副詞引導
when we arrive doesn’t matter. 什么時候到沒有關系。