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to后面只可以接辞书型的词汇。。。 It's important to do something. 最后修改于 2007-12-5 21:47:56
It's +adj.+ to do sth. 做某事是...的,这里的 to是动词不定式to 当介词用的时候,后面才会+doing eg: look forward to...期望,等待(to 在这里当介词用) I'm looking forward to going to your party.我一心期待着你将要举办的晚会。 楼上的讲得很明白,不定式后面加do ,介词to 后面加doing.此处的to是不定式to it is important to do sth. 固定结构,不能用doing。这个结构中to do sth. 是动词不定式,动词一定要用原形 it is +形容词+to do sth. 又如: It is difficult to answer this question. 不对!TO DO |