(1)表語從句
1. 定義:用作表語的從句叫做表語從句。
2. 構成:關聯詞+簡單句
3. 引導表語從句的關聯詞的種類:
(1) 從屬連詞that。如:
The trouble is that I have lost his address. 麻煩是我把他的地址丟了。
(2) 從屬連詞whether, as, as if。如:
He looked just as he had looked ten years before. 他看起來還與十年前一樣。
The question is whether they will be able to help us. 問題是他們是否能幫我們。
注:從屬連詞if一般不用來引導表語從句,但as if卻可引導表語從句,如:
All this was over twenty years ago, but it's as if it was only yesterday.
這都是20多年前的事了,但宛如昨天一樣。
能跟表語從句的謂語動詞一般為系動詞be, seem, look等。如:
It looked as if it was going to rain. 看起來天要下雨了。
(3)連接代詞who, whom, whose, what, which, whoever, whatever, whichever
連接副詞 where, when, how, why。
(2)主語從句
1. 定義:用作主語的從句叫做主語從句。
2. 構成:關聯詞+簡單句
3. 引導主語從句的關聯詞有三類:
(1) 從屬連詞that。 如:That they were in truth sisters was clear from the facial resemblance between them.
很明顯,她們確是親姐妹,她們的臉型很相似。
(3)定語從句講解:http://42bites.com/list-113-1.html