walked on the street and could not find my wallet i could ha

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/04/30 08:00:32

walked on the street and could not find my wallet i could have leave it at home
当时我问英语老师为什么是have done 而不是had done 他说情态动词加have done 就是表对过去的推测,但是我觉得有一点问题,求高手解答,贴资料,网址,自己写的也行,但是希望要权威点的

我在街上走着,找不着钱包了,我可能是把它落在家里了.
这里是虚拟语气啦,could have done表示一种猜测
再问：可以说是固定搭配吧，就是have done 没有had done 这种说法对吧
再答：因为could是助动词因此后面肯定是动词原形

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