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题目
have been 和 had been的区别
分别在什么情况下使用呢

提问时间:2020-08-10

答案
一楼说的对,have been 用在现在完成时态中,如:I have been here for ten years.They have been to Shanghai for a long time.had been 用于过去完成时中.如:I had been to XI'an before I went to Beijing.在我去...
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