★complain v. 抱怨 complaint n.

① vi. 抱怨，发牢骚，诉苦（常与of，about连用）

complain of/about …(to sb.) 对某人/向某人抱怨……

Don’t complain about/of the weather.

I complain of my salary to my boss.

② vi. 控告，抗议（与of，about连用）

The people in that district complain to the police about the noise from that factory. 那家工厂噪音太大，当地的人们已向警方投诉。

Mary complain to the Jacksons about the rubbish they had thrown everywhere. 杰克逊一家乱扔垃圾，玛丽已向他们提出抗议。

派生词：

▲complaint n.抱怨;不满;投诉:

a letter of complaint投诉信

I have no complaint about my pay.

关于薪水我没有什么不满。

In time of difficulty, what we need is not complaint to each other but understanding of each other.

国难的时侯，我们需要的不是相互抱怨而是互相理解。

②抱怨/投诉的事

I have a number of complaints about the hotel room you＇ve given me.

我对你给我的旅馆房间有许多不满。