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

问题描述:

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.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。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。