語(yǔ)法是英語(yǔ)學(xué)習(xí)的基礎(chǔ)，也是的基礎(chǔ),，掌握好英語(yǔ)語(yǔ)法無(wú)論是對(duì)還是以后的英語(yǔ)學(xué)習(xí)都是有很大幫助的,。下面頻道為大家整理了?？贾R(shí)講解，一起來(lái)學(xué)習(xí)一下吧!
　　英語(yǔ)?？贾R(shí)點(diǎn)講解：動(dòng)詞時(shí)態(tài)
　　1)現(xiàn)在完成進(jìn)行時(shí)態(tài) (have/has been -ing 分詞構(gòu)成): 動(dòng)作或狀態(tài)從過(guò)去某時(shí)開始,繼續(xù)到現(xiàn)在,可能繼續(xù)下去,也可能剛剛結(jié)束.
　　I’ve been writing letters for an hour. I’ve been sitting in the garden.
　　2)過(guò)去完成進(jìn)行時(shí)(由had been ing分詞構(gòu)成): 過(guò)去某個(gè)時(shí)刻以前一直在進(jìn)行的動(dòng)作
　　I’d been working for some time when he called. We had been waiting for her for two hours by the time she came.
　　3)將來(lái)完成進(jìn)行時(shí): 將來(lái)某個(gè)時(shí)刻以前一直在進(jìn)行的動(dòng)作.
　　By next summer, he will have been working here for twenty years. In another month’s time she’ll have been studying here for three years.
　　4)將來(lái)完成時(shí)(由shall/will have 過(guò)去分詞構(gòu)成): 將來(lái)某時(shí)會(huì)業(yè)已發(fā)生的事.
　　I shall have finished this one before lunch. They’ll have hit the year’s target by the end of October.