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There were lots of thngs to do .There were lots of thngs doi

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There were lots of thngs to do .There were lots of thngs doing.I have lots of things to do
我在练习册上见到的.句子后的do什么时候用动词不定式,什么时候用doing啊
(1)doing形式是动名词,也可以说是现在分词,表示已经做过的事,主动语态.to do表示未做过的事或将要做的事,主动语态.
(2)done表示做过的事,被动语态.和前面的名词构成被动关系.
(3)解析:只要理解句子中是做过的还是未做的,就知道该用哪一个了.
希望能帮到您.
再问:  谢谢,不过你能说说三个句子中do的区别吗
再答: There were lots of thngs to do . 表示将来需做的事情。There were lots of thngs doing。表示有许多事情正在进行或正在被人做。 I have lots of things to do。表示将来需做的事情。 但愿能帮到您。 祝您进步。