现在完成时怎么用答:现在完成时(have/has done, have/has been done) 1.现在完成时常用的时间状语有lately,recently,just,already,yet,up to now,till now,so far,to this day,in the past few years/months/weeks/days,over the past few years,during the last three months,for the last few centuries,through centuries,th...
英语中一般现在时,现在进行时,现在完成时,的区别。一般过去是,过去进 ...答:时态 - 五、 现在完成时 1.概念:过去发生或已经完成的动作对现在造成的影响或结果,或从过去已经开始,持续到现在的动作或状态。2.时间状语:yet,already,just,never,ever,so far,by now,since+时间点,for+时间段,recently, lately, in the past few years, etc.3.基本结构:have/has + done...