短文改错 I found out my mistake only after you and your wife hav

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/11/17 11:04:06

短文改错 I found out my mistake only after you and your wife have left.为什么要把have改为had?

因为从前面的found可知时态是过去式,所以后面应该用过去完成时,用had left
再问：可是过去完成时不是指过去的过去所发生的事吗？？翻译不通啊！！
再答：怎么翻译不通？你跟你妻子离开之后我才发现我的失误。
再问：离开是在过去，发现错误并不是在过去的过去... 您的意思是一般过去时后只能加过去完成时而不能加现在完成时吗？？
再答：不是这个意思！这里用过去完成时，因为就是过去的过去啊第一个过去是我发现，第二个过去是两人离开发现错误是过去，离开是过去过去

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