when did you lost your umbrella?这句子对吗

来源：学生作业帮编辑：大师作文网作业帮分类：英语作业时间：2024/11/11 07:35:20

用lose 再答： did后面要跟动词原形, lost是lose的过去式, 遗失的意思。
再问：那如果把did改成are呢
再答：那你这就是病句了。首先are是be 动词, 再来说句子里已经有lose这个动词了, 是不能再出现其他动词的。
再问： when do you lost your umbrella？这对吗
再答： do和did性质是一样的, 只不过do不用在过去时态。所以do后面还是要跟动词原形, lose
再答：可能你平时有看到"They are playing basketball他们正在打篮球" 或者 "It was killed它被杀死了 "前一个是现在进行时的固定表达形式, 即be +动词ing。后一个是被动语态的固定表达形式, 这你以后会学。比如这两种情况, 就会出现be动词与其他动词一起用的情况, 这里的be动词就相当于助动词了。

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