be believed to have done
He is believed to have done
have done/to be done
have been done 和 to be done
have it to be done
have sth done与have sth to be done
have sth to be done/have sth done?
have something done 与have sth.to be done 区别
歌曲中含有TO DO :TO BE DONE :TO HAVE BEEN DONE :TO HAVE DONE
Why is it believed that much remains to be done before black
why is it believed much remains to be done before black a me
be supposed to 和should have done
be used to have done是什么用法?