has down是什么时态,have has been doing是什么时态

has down是什么时态,have has been doing是什么时态

has done是什么时态现在完成时。1.现在完成时（The Present Perfect Tense）是过去的动作或状态持续到现在并且已经完成，对现在造成的影响，可能持续发生下去。它的构成是：主语+Michael has been ill.(含义是：现在仍然很虚弱) He has returned from abroad. (含义是：现在已在此地) 2. 现在完成时可以用来表示发生在过去某一时刻的，持续到现在的情况，常

ˋ＾ˊ〉-# Large of soil has been washed away. 2.时态、语态混用Last night, I had(删去)enjoyed a party. The painting on the wall(增加was) damaged seriously. 3二.一般过去时态1.结构肯定句式：主语+动词过去式+其他否定句式：主语+(助动词)didn’t +动词原形+其他一般疑问句式：Did+主语+动词原形+其他简略回答：(

had down是过去完成时。例句：The blankets had been folded down. 毛毯已折叠起来。The candle had burned right down. 这支蜡烛已全烧完了。havebeendown是什么时态have been done 是现在完成时中的被动结构。其被动语态完整结构：肯定式为：have/ has +been +done。否定式为：have/ has +not +been +done。现在

willhavetoB.arenotkept;havetoC.donotkeep;willhavetoD.donotkeep;haveto12.Theprice___,butIdoubtwhetheritwillremainso.A.wentdownB.willgodownC.hasgonedohas down 和had down的区别has down 和had down的区别时态不同：has 用于现在时，had用于过去时再问：我要说的是has done 和had done = =,不好意思. 再答：ha

ˋ﹏ˊ has changed C. will have changed D. will change 7. I ___ping-pong quite well, but I haven’t had time to play since the new year. (01全国)(D) A. wilhas gone down是现在完成时态。has:有；have 的第三人称单数现在时形式。gone:adj. 用完了；用光了；走了；离开了；不在；不复存在；一去不复返。down:adv. 向