賓語從句可以分為三類

(1).動詞的賓語從句

1.1 大多數位于動詞后面

Eg：I hope you can join us in the game.

1.2 有些是“動詞+副詞”后

Find out / point out / figure out / turn out/ figure out

Eg： Can you figure out what the poet really means in this poem?

1.3 有些動詞短語后面

Make sure / make up one’s mind / keep in mind

Eg; we should keep in mind that sports can be a great boost to our health.

(2) it 作形式賓語代替賓語從句

第一類動詞; find/ feel/ think/ consider/ make / believe/ guess/ suppose /assume等后面有賓語不足語時，需要用it 作形式賓語而將that引導的真正的賓語從句后置。

Eg： I think it necessary that we do some sporting.

第二類動詞 帶賓語從句時需要在從句前面加it。

這類詞：hate / like/ dislike/ appreciate/ depend on/ see to /

Eg: I hate it when they talk without considering other’s feeling.

但是如果賓語從句是WH-類引導的，其后面有to be 短語作賓語補足語，不可以用it 代替。

We all consider what you said to be unbelievable. (right)

We all consider it to be unbelievable what you said .(wrong)

(3) 形容詞后的賓語從句

Adj: sure / certain/ glad/ pleased/ happy / afraid / sorry 等等。

Eg; I am not sure whether you will come or not.