從句中同樣五臟俱全,引導從句的單詞(引導詞)可以充當從句中主語,賓語,定語,狀語
一、賓語從句引導詞
(賓語從句,整個句子在主句中是賓語,找分界點:主句中的謂語動詞。下面例子中我用波浪線給大家把主句中的謂語標出來了,幫助咱們識別。)
1、that 引導
1)一般可省略
2)不可省略。
①謂語+其他成分+賓語從句時
如:I told him in my letter that I might not attend his party。(因為told 和that I might not attend his party之間有in my letter。所以that不可以省略,其中him是間接賓語)
②賓語從句中主語是that/this時
如:She said that this is very special。
③謂語動詞是agree,suggest,learn,intend,admit,feel,claim,hold等
如:I learned that she would come to Beijjing。
2、whether和if引導
1)可互換
2)不可互換。
只用whether 情況如下:
&與or not連用時。 Please tell me whether Mike can come or not。(其中me是間接賓語)
&作介詞的賓語時。 He is worried about whether she will be back。
&賓語從句在句首時。 Whether she is pretty,I am not sure。
3、由連線代詞和連線副詞引導。
&連線代詞:what/who/whom/whose/which/whatever
I know what I should say。
I know who can do it。
I know whom you are talking with。
I know whose shoe it is。
I know which I can take。
&連線副詞:where/why/how/whenever/when
I know why I like you。
I know how I can do it。
I know where I can find her。
I know when she will com。
二、賓語從句時態
1、主句:一般現在時,賓語從句:自由放縱
2、主句:一般過去時,賓語從句:謂語常用過去時
&賓語從句是客觀真理或自然現象,從句謂語動詞用一般現在時。