Subject + 抱怨 + (说) + Content
抱怨 (bàoyuàn) is a verb meaning "to complain" or "to grumble." It expresses dissatisfaction or frustration about a situation, person, or outcome. It can be followed by a direct object, a clause introduced by 说, or used without an object to describe the general act of complaining.
他总是抱怨工作太忙没时间休息。
Tā zǒngshì bàoyuàn gōngzuò tài máng méi shíjiān xiūxi.
He always complains that work is too busy and he has no time to rest.
别老抱怨了,想想怎么解决问题吧。
Bié lǎo bàoyuàn le, xiǎngxiang zěnme jiějué wèntí ba.
Stop complaining all the time and think about how to solve the problem.
顾客抱怨说菜上得太慢了。
Gùkè bàoyuàn shuō cài shàng de tài màn le.
The customer complained that the food was served too slowly.