來(lái)源:網(wǎng)絡(luò)資源 2022-03-09 20:16:01
if/whether 是否
I wonder if he is at home.
I ask him whether he would come.
注意:只可以用whether的情況
介詞后面 It will depend on whether it rains tomorrow.
whether···or not 固定搭配 Let me know whether you come or not.
動(dòng)詞不定式前 I don’t know whether to accept his advice.
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