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It is a waste of time doing this这里为什么用doing而不用do?为什么?
It is a waste of time doing this这里为什么用doing而不用do?为什么?
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推荐答案 2008-11-05
doing现在分词形式表主动意义,是真正的主语,代替It倒过来就是doing sth is a waste of time
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第1个回答 2008-11-05
waste of time doing sth.是句型记住就可以了,意思是浪费时间干某事
waste 后面加动名词,不能跟动词原形。
第2个回答 2008-11-05
It is a waste of time后面可以加doing(动名词)或者to do(to不可以省略)。
这个一个典型的强调句,光用do是不完整的。doing sth 对应的是It,做动名词形式是最合适的,把句子倒过来变成doing sth is a waste of time。
第3个回答 2008-11-05
of是介词 介词后面加ing
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