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in the room. Can they have gone out? 屋里沒(méi)有燈,他們可能出去了嗎? ? 2. There is nowhere to find them. Where can they have gone? 到處找不到他們,他們可能到什么地方去呢? 四、 “ could+have+done” ? 是虛擬語(yǔ)氣,表示對(duì)過(guò)去事情的假設(shè),意思是本來(lái)能夠做某事而沒(méi)有做。 ? ? He could have passed the exam, but he was too careless. 本來(lái)他能夠通過(guò)考試,但是他太粗心。 五、 “ may+have+done” ? 表示對(duì)發(fā)生過(guò)的事情的推測(cè),意思是“可能已經(jīng)”或“也許已經(jīng)”,用于肯定句中。 ? —What has happened to Gee? ? —I don39。t know. He may have got lost. ? —喬治發(fā)生了什么事? ? ——我不知道,他可能迷路了。 六、 “ might+have+done” ? 表示對(duì)過(guò)去事情的推測(cè), might與 may意思相同,但可能性更小。多用于虛擬語(yǔ)氣結(jié)構(gòu)中。 ? ? 1. He might have given you more help, even though he was