seem to do和seem to have done的区别

这里的区别主要看seem to 后面的成分所暗示的时态。
seem to do 表达的是一般情况，翻译为好像... 例如
He seems to like English very much ,because he reads it every day.
他好像蛮喜欢英语的，因为他每天都读英语。
seem to have done 翻译为 好像已经... 它表达的是一个过去的已经
发生的情况
He seems to have read the novel because he knows much about the

plots. 他好像已经读过这部小说了，因为他对里面的情节了解得蛮多的。
和seem to have done的区别

seem to do 似乎怎样, 好象，似乎
seem to have done 似乎做了 ……

seem to have done 看起来已经做了某事.
She seems to have finished her homework.看来她的作业已经做完了.
seem to do 看起来……(还没做某事)

一个是将要，一个是已经做了