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you are kidding.he can't be here now .he's gone to america,_

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you are kidding.he can't be here now .he's gone to america,_____?
这里是接isn't he还是hasn't he?我觉得是isn't he 但是答案是hasn't he.
you are kidding.he can't be here now .he's gone to america,_
当然是hasn't了.上一句he's gone to america=he has gone to America.反问句要时态一致的.
再问: 嗯怎么辨别是he‘s是展开来时he is 还是he has呢?
再答: 因为后面是gone用的是过去完成时。所以一定是have/has gone