问题: 不定式问题: It is difficult____ such a complicated question in English.
不定式问题: It is difficult____ such a complicated question in English.
a. answering b. to answer (b)
请教为什么用不定式
解答:
It is +adj to do sth形式是to do sth/doing sth is adj形式的变体.主语是不定式或动名词时,常后置,用it代替主语(形式主语).
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