为什么It seemed that he had realized his mistake.
问题描述：
为什么It seemed that he had realized his mistake.
等于He seemed to have realized his mistake.
而不是had realized呢?
答
seem的用法：
it seemed that
sb seemed to do
It seemed that he had realized his mistake.
主句用了过去式,从句用相应的过去式,has realized 变成 had realized
He seemed to have realized his mistake.
to 后面跟原形,to have realized 叫不定式的完成式