have been to和had been to的区别

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havebeento和hadbeento的区别havebeento和hadbeento的区别havebeento和hadbeento的区别到现在为止去过某个地方到过去的某个时间为止去过某个地方前一个是

have been to和had been to的区别
have been to和had been to的区别

have been to和had been to的区别
到现在为止去过某个地方
到过去的某个时间为止去过某个地方

前一个是现在完成时的被动语态,后者是过去完成时的被动语态

现在完成时和过去完成时
前者发生在现在的过去
后者发生在过去的过去

have been to现在完成时
had been to过去完成时
I have been to Beijing before.
I had been to Beijing before I came to Tianjing.

have been + Ving ==I have been taking my exam.
had been + Ving ==He had been taking his exam.