We haven't settled the question of___it is necessary for

We haven't settled the question of___it is necessary for him to study abroad
这里为什么用whether而不用if

cylleocat 1年前已收到2个回答举报

zliang1982 幼苗

共回答了16个问题采纳率：93.8% 举报

whether及其引导的成分可放于介词之后,作介词的宾语,但if不能

1年前

sqsq520345 幼苗

共回答了18个问题举报

if 不能跟在介词后面只有whether 可以

1年前

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