宾语从句
I understand that he is well-qualified, but I feel he needs more experience.
I am sorry that you’re ill.
He made it quite clear that he preferred to study English.
They told us once again that the situation was serious.(that不可以省略,否则有歧义)(省后可译成：他们再次告诉我们形势很严重。/他们告诉我们形势再次很严重)
I haven’t the least interest in what he is doing.
We have no definite information yet as to which route he will take.
She is sorry for what she said.
重要考点
That 在不引起歧义时可以省略
动词宾语从句中，whether if等同,介词宾语从句中只用whether
I don’t know whether/if he will come.
I have no idea as to whether he will come.
为保句子平衡，可用it 做形式宾语，真正宾语从句放在句末。
He made it quite clear that he preferred to study English.
用何连词看从句中缺少什么成分来决定
注意介词宾语从句(多用what)
Whether 和if 差别
1. if 只可以用于动词宾语从句中，不可以用于主语从句、表语从句和介词宾语从句中
whether 可以和or not 连用，if 则不可
I don’t know whether he will come or not.
I don’t know whether/if he will come.