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have的過(guò)去式和過(guò)去分詞都是had,但是具體應(yīng)用有區(qū)別.
1.表示過(guò)去用過(guò)去式：We had a meeting yesterday .(發(fā)生在過(guò)去)
2.表示現(xiàn)在完成（助動(dòng)詞的現(xiàn)在式+過(guò)去分詞）：We have had a meeting just now.(雖然發(fā)生在過(guò)去,卻對(duì)現(xiàn)在產(chǎn)生了影響,即會(huì)議的進(jìn)程在說(shuō)話(huà)時(shí)依然清晰可見(jiàn))
3.表示過(guò)去完成（助動(dòng)詞的過(guò)去式+過(guò)去分詞）：We told him we had had a meeting the day before yesterday.（發(fā)生在told的過(guò)去,即過(guò)去的過(guò)去）