1、complain：不及物动词，抱怨，诉苦He complained to me about the food.他向我抱怨伙食不佳。
2、complain：不及物动词，申诉，控诉，抗议He complained to the police of the boys stealing his apples.他向警方控告那些男孩偷他的苹果。
3、complain：及物动词，诉说，申诉，控告[后面常跟从句]He complained that the exam was too hard.他抱怨考试太难了。
4、complain：诉说有…病痛;主诉He complained of a headache.他说头痛。
5、complain：实例用法He came to complain about the volume of the music.他过来抱怨音乐的音量太高了。
6、complain：complain of sth诉说（病情或痛苦）She left early, complaining of a headache.她说自己头疼，很早就离开了。
