主語從句用法詳解

1、.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。

2、That she became an artist may have been due to her fathers 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 re

3、mains 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 w

4、e arrive doesnt matter. 什么時候到沒有關系。How it was done was a mystery. 這是怎樣做的是一個謎。How this happended is not clear to anyone. 這件事怎樣發(fā)生的，誰也不清楚。How many people we are to invite is still a question. 邀請多少人還是一個問題。Where I spend my summer is no business of yours. 我在哪里過暑假不關你的事。5. 關系代詞型what引導What we need is money. 我

5、們需要的是錢。What I want to know is this. 我想知道的就是這一點。Whats done is done. 事已成定局。What he says is not important. 他說的話并不重要。What I am telling you is mere impressions. 我和你說的都不過是一些印象而已。What make the river more beautiful are the lotus plants growing in the water. 為河水增色的是水里的荷花。What you need is a good-sized canvas

6、bag. 你需要的是一個比較大的帆布袋。What I am afraid of is their taking him to Portugal. 我擔心的是他們把他帶到葡萄牙去。What struck me was that they have all suffered a lot. 給我很深印象的是他們都受過很多苦。二、主語從句與形式主語it有時為了考慮句子平衡，通常在主語從句處使用形式主語it，而將真正的主語從句移至句末。這分三種情況：(1) 對于以連詞that引導的主語從句，通常用形式主語代主語從句：Its a pity that he didnt come. 很遺憾他沒來。It is

7、important that he should know about this. 他必須知道此事。Its vital that we be present. 我們出席是至關重要的。It was intended that you be the candidate. 大家的意圖是讓你當候選人。It is important that this mission not fail. 這項使命不失敗至關重要。It is essential that a meeting be convened this week. 本周開一次會非常重要。It is appropriate that this tax

8、be abolished. 廢除這個稅是恰當?shù)?。Its unfair that so many people should lose their jobs. 竟有這么多人失業(yè)這是不公平的。Its amazing that she should have said nothing about it. 她竟未談及此事令人驚訝。Its unthinkable that they should deny my request. 他們竟然拒絕我的請求，這是不可思議的。That they should refuse to sign the petition required great courage.

9、他們拒絕在請愿書上簽字這是需要很大勇氣的。(2) 對于以連接代詞(副詞)引導的主語從句，可以使用形式主語代主語從句，也可直接在句首使用主語從句：Whether they would support us was a problem. 他們是否會支持我們還是一個問題。It was a problem whether they would support us. 他們是否會支持我們還是一個問題。It remains to be seen whether it will do us harm or good. 它對我們是利是害，還得看看再說。(3) 對關系代詞型what引導的主語從句，通常直接將主語

10、從句放在句首。如：What we need is money. 我們需要的是錢。What I want to know is this. 我想知道的就是這一點。有時也可將助用形式主語。如：It is clear enough what he meant. 他是什么意思很清楚。(4) 如果句子是疑問句，則必須用帶形式主語it的結構：Is it true that he is the girls father? 他是那女孩的父親，是真的嗎？How is it that you are late again? 你怎么又遲到了？(from )三、連詞that的省略問題引導主語從句的連詞that 有時可省，有時不能省，其原則是：若that引導的主語從句直接位于句首，則that不能省略；若that引導的