You don't look well,you'd better see the doctor.-I_,but he s

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：英语作业时间：2024/04/28 12:05:35

You don't look well,you'd better see the doctor.-I_,but he said there was nothing wrong.填have,had

应该选have,表示现在完成时,即在此之前我已经去过了.
用had就成了过去完成时了.意思就成了：在那（过去某个时间）之前我已经去过了.
你看上去不舒服,最好去看看医生.
我已经去过了,但他我说没什么病.
再问：你地回答好得很好，这里为何不能用过去完成时你？我还有些不明白，能不能在解释下，非常感谢。
再答：因为“此前去过了”是指“现在”之前的时间。如果已过去某个时间点为起点向前推，那就要用过去完成时了。比如：Yesterday he invited me to see a movie with him. As I had seen that movie, I refused. 这时才用过去完成时。

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