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be able to 與can用法區別
作者:admin  文章來源:本站原創  點擊數  更新時間:2008-06-22  文章錄入:admin  責任編輯:admin



be able to can用法區別

 

(1) be able to 強調通過努力而獲得的能力,而can則強調自身已具有的能力。如:

She can sing the song in English. 她能用英語唱這首歌。

He will be able to sing this song in English in a few minutes, too. 幾小時之后,他也能用英語唱這首歌。

(2) be able to 強調一種結果,而can只強調一種可能。如:

Luckily, he was able to escape from the big fire in the end. 幸運的是,他終于逃出了大火。

If he got here a few hours earlier, I could save him. 要是他早幾小時來,我還能救他。

(3) be able to 可以有各種時態;而can只有一般現在和一般過去兩種時態。如:

I could help you last night, but you didnt come. 昨天晚上我能幫你,而你又沒來。

Can you see it there? 你能看見它在那兒嗎?

He is / was / will be able to help you. 他能幫你的忙(from www.52ysedu.com)。

(4) can可用于表示可能性,推測,允許等情況,而be able to通常不這樣用。

 

點擊→英語疑難問題·綜合解答

 

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