complain about/of sth.对什么抱怨,关于什么抱怨
complain about和complain of 的区别：
1,意思上的区别,complain of 多了to say that you have a pain or are sick的意思,比如：She had
been complaining of headaches.
另外complain
of的抱怨是正式的,所以可以是法律上,向官方提出的.比如：Refugees had complained of being robbed and beaten
by officials.
2.用法上的区别
complain of / complain about 是接
sth或者动名词
但是complain about 可以不带,而complain of则不行.
比如：What are you
complaining about?
complain for 为了什么而抱怨 be complained by 被谁所抱怨,被动语态
不清楚的请继续发问