be able to的主语可以是人也可以是事物。请看经典例句：

She'll be able to put her languages to good use in her new job.

她在新工作中应该可以好好运用她会的各种语言。

You must be able to speak French for this job.

干这项工作你得会说法语。

Fit people are better able to cope with stress.

健康的人较能应付压力。

You'd better reckon without me, as I am not sure whether I shall be able to be present.

你最好别把我算进去，因为我能否出席还不一定。

For certain personal reasons I shall not be able to attend.

由于某种个人原因，我将不能出席。

You need to be able to work as part of a team.

你必须能作为团队的一员去工作。

I've never been able to work her out.

我从未能摸准她的秉性。

I haven't been able to get much work done today.

我今天未能干多少工作。

She was able to command the respect of the.

她赢得了全班的尊敬。

She was not able to bear children.

她不能生育。

They were not able to take up residence in their new home until the spring.

他们到第二年春天才住进了新家。

I'll never be able to look her in the face again!

我再也不能坦然地面对她了！

Women seem to be able to multitask better than men.

女性似乎比男性更擅长同时做数件事情。

I won't be able to get away from the office before 7.

我7点钟之前无法离开办公室。

They were able to achieve a settlement without using military force.

他们没有诉诸武力就解决了问题。

I have some information you may be able to use.

我有些可能对你有用的信息。

We should be able to sell the house at a profit.

我们卖掉这座房子应该可以获利。

Soon the wearer of a virtual reality headset will be able to be 'present' at sporting or theatrical events staged thousands of miles away.

不久，戴上虚拟现实的头戴式视图器，人们将能“现场观看”几千英里之外进行的体育比赛或剧场演出。《柯林斯高阶英汉双解学习词典》

A good auditorium will assure that the sound is able to be heard from every seat,( TOEFL

好)的礼堂能保证每个座位的听众都能听到声音。

The mistake is able to be corrected.

这个错误是可以纠正的。