A:Have you two met?B:No,but I heard a lot about him

问题描述:

A:Have you two met?B:No,but I heard a lot about him
I've heard a lot about you.为什么这句话是现在完成时,而No,but I heard a lot about him 却用一般过去时?

句子都是对的,只是要看语境和想要表达的具体意思了.
完成时有强调过去的某一行为对现在的事物产生影响及结果,
而过去时就是简单地陈述过去的事情了.