about后面加什么时态

He doesn't like to talk about his private life.

他不愿谈及他的私生活。

There was much discussion about the reasons for the failure.

就失败的原因进行了大量的讨论。

It was a difficult situation, when you think about it.

仔细想来，当时处境是很困难的`。

The population is increasing at about 6% per year.

人口以每年约6%的速度增加。

Talking about my problems doesn't come easy to me.

要讲关于自己的问题，对我来说并不容易。