if和whether的区别是什么

2024-12-20 13:12:57
推荐回答(2个)
回答1:

为您解答

whether与if作“是否”讲,在用法上有相同之处,也有不同之处。

一、相同之处。
1.whether和if都能引导宾语从句,常置于see,ask,learn,tell,wonder,doubt,find out等动词之后。
如:He asked me whether/is I could help him. I want to know whether/if he lives there.
2.whether和if都可用it作形式主语从句中。如: it's uncertain whether/if he'll come this evening.
3.在be uncertain/doubtful之后,常用whether引导宾语从句,有时也可以用if,如: We are uncertain whether/if Mary will come.

回答2: