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他終于能夠讀書(shū)和寫(xiě)了。 ? 表示過(guò)去通過(guò)努力終于做成了某事要用 be able to,而不能用 can。如: ? I was able to swim to the bank after hard practice. 經(jīng)過(guò)艱苦的練習(xí)后,我終于游到河對(duì)岸了。 ? can能表猜測(cè), be able to不能。 can的這種用法主要用于疑問(wèn)句和否定句中。 ? Somebody is knocking at the door. Who can it be? 有人敲門(mén),會(huì)是誰(shuí)? ? It can’t be our teacher who is knocking at the door. 敲門(mén)的不可能是我們的老師。 ? can 表“允許”,與 may可以互換,此時(shí)不能用 be able to代替。如: ? Can /May I sit here? 我能 /可以坐在這兒?jiǎn)幔? ? Yes, please. 可以。 ? Can是情態(tài)動(dòng)詞,只能用作謂語(yǔ)成分, be able to是普通動(dòng)詞短語(yǔ),既可以作謂語(yǔ),也可以作非謂語(yǔ)。如: ? Being able to speak English fluently, he has no difficulty in municating with the Americans at the party. 由于它能夠流利地說(shuō)英語(yǔ),在晚會(huì)上他同美國(guó)人交流沒(méi)有困難。 ? 2. When Jane was ten years old, she became i