seem to do和seem to have done的区别

seem to do和seem to have done的区别 seem to do seem to have done seem to do和seem that的区别 英语seem to do 和seem doing的区别 seem to be doing sth ,seem to do ,seem to have done sth seem to be+adj和 seem+adj 的区别? seem to be done 英语翻译seem to ,have a done seem+adj和 It seem that 和 seem to do 的用法 有seem doing 与seem to do有什么区别? seem to do sb. seem unhappy和seem to be unhappy区别?