have done 是现在完成时,表在过去发生的动作对现有影响.So far I have been to Beijin

have done 是现在完成时,表在过去发生的动作对现有影响.So far I have been to Beijin I have been busy since yesterday.现在完成时是have加过去分词,但这里的过去分词在哪里 have done是现在完成时 have been done 是不是现在完成时的被动吖 【现在完成时表示动作发生在过去,对现在有一定的影响或结果】怎么看? to have done 和 having done 都表示发生在谓语之前的动作 i have never been to a debate so far I have been up to so far 如何翻译 关于现在完成时现在完成时的基本结构不就是 have has been么,怎么还+have/has+过去分词(done), how have you been to so far? 现在完成时的结构 主语＋ 助动词 have has＋been＋done＋过去分词是什么意思? have been 是现在完成进行时的标志,那为什么i have been to korea twice 是现在完成时 问下被动语态问题,have been done 是现在完成时的被动语态,那we have done this homew