complain用法：

　　vi.  抱怨,發(fā)牢騷;訴說(病痛bai等)(+to/about/of)

　　I've really got nothing to complain of.我確實沒有什么可抱怨的。

　　He complained to me about the food.他向我抱怨伙食不佳。

　　控訴,投訴(+to/about/of)

　　He complained to the police of the boys stealing his apples.

　　他向警方控告那些男孩偷他的蘋果。

　　vt. 抱怨;控訴Y+that

　　He complained that the exam was too hard.他抱怨考試太難了。

　　詞組：

　　complain about對……不滿

　　complain about sth 抱怨某事

　　complain to sb 想某人抱怨

　　complain that+從句 抱怨某事

　　complain to sb (about sth) 向某人抱怨某事

　　complain of sth 訴說病痛

　　complains box是意見箱的意思

　　complain of 抱怨；抗議