if/whether 是不是
I wonder if he is at home.
I ask him whether he would come.
注意：只可以用whether的状况
介词后面 It will depend on whether it rains tomorrow.
whetheror not 固定搭配 Let me know whether you come or not.
动词不定式前 I dont know whether to accept his advice.
来源：www.yxqpool.com 2025-08-29
if/whether 是不是
I wonder if he is at home.
I ask him whether he would come.
注意：只可以用whether的状况
介词后面 It will depend on whether it rains tomorrow.
whetheror not 固定搭配 Let me know whether you come or not.
动词不定式前 I dont know whether to accept his advice.
