分为四类,它们分别是：行为动词,系动词,情态动词和助动词.
eg:
1.He goes to school every day.他每天去上学.
2.I am a teacher and she is a doctor.我是一个老师,她是一个医生.
3.Can you sing an English song?你会唱一首英文歌吗?
4.We don't like playing football.我们不喜欢踢足球.
动词分别是：goes; am,is; can; don't
英语的动词分为___类,他们是______、______、______,请各举一例