are able to怎么用

问题描述

精选答案

1.be able to翻译表示“能够做某事”，强调通过努力而获得的能力。

She is able to play the piano.她能够弹钢琴。

2. be able to后面接动词原形be able to do sth. 能够做某事He is able to drive a car.他会开车。

3. be able to的时态一般现在时：am/is/are able to一般过去时：was/were able to一般将来时：will be able to现在完成时：have/has been able toI am able to run very fast.我能够跑得非常快。

4. be able to的否定一般现在时：am not/isn’t/aren’t able to一般过去时：wasn’t/weren’t able to一般将来时：won’t be able to现在完成时：haven’t /hasn’t been able to5.be able to的同义词was/were able to ≈ couldam/is/are able to ≈ canwasn’t/ weren’t able to ≈ couldn’t （最常用）am not/ isn’t /aren’t able to ≈can’tbe able to的否定式与be unable to同义比如：isn't able to = is unable toweren’t able to = were unable to

其他回答

财会审计帮

"are able to"意为"能够"，用于表示某人或某物具备某种能力或有能力做某事。are able to表示能够因为are表示现在时态，able表示能力，to跟在able后面，表示某人或某物有能力做某事。例如： I am able to speak English fluently.(我能够说一口流利的英语。)

其他回答

财会审计帮

(1) be able to 强调通过努力而获得的能力,而can则强调自身已具有的能力.如：She can sing the song in English.她能用英语唱这首歌.

(2) be able to 强调一种结果,而can只强调一种可能.如：Luckily,he was able to escape from the big fire in the end.幸运的是,他终于逃出了大火.

(3) be able to 可以有各种时态；而can只有一般现在和一般过去两种时态.如：I could help you last night,but you didn’t come.昨天晚上我能帮你,而你又没来.