【正文】
video time 過(guò)去完成時(shí)與現(xiàn)在完成時(shí)的區(qū)別 ? 兩種時(shí)態(tài)都常與表示一段時(shí)間的狀語(yǔ)連用,但現(xiàn)在完成時(shí)表示的是延續(xù)到現(xiàn)在或與現(xiàn)在有關(guān)的動(dòng)作(句中不可有表示過(guò)去特定時(shí)間的狀語(yǔ)),而過(guò)去完成時(shí)表示的是在過(guò)去某時(shí)之前已經(jīng)完成或延續(xù)到過(guò)去某時(shí)的動(dòng)作(句中有表示過(guò)去特定時(shí)間的狀語(yǔ)),比較下面兩個(gè)句子: ? She had been ill for a week before she came back.(生病發(fā)生在“過(guò)去的過(guò)去”) ? She has been ill for a week.(現(xiàn)在仍在生?。? 過(guò)去完成時(shí)與一般過(guò)去時(shí)的區(qū)別 ? 一般過(guò)去時(shí)是對(duì)現(xiàn)在說(shuō)話時(shí)刻而言的,過(guò)去完成時(shí)則是對(duì)過(guò)去某一時(shí)刻而言的,比較下面兩個(gè)句子: ? When he stopped laughing ,everyone left.(他停止笑以后,別人才離開(kāi)) ? When he stopped laughing,everyone had left.(在他停止笑以前,別人已經(jīng)離開(kāi))