1、若does在句中作助动词,则后接动词原形。
例句:If he has offended you, he does not mean it.
如果他得罪了你,那他是有嘴无心。
2、若deos在句中作实义动词时,does本身就是动词。
例句:He does his homework at home.
他在家写作业。
do的用法
1、做实义动词
eg: Doing some exercises every morning is good for our health.(每天早晨做些锻炼有益健康。)
2、助动词
eg: He doesn’t like horror movies.(他不喜欢恐怖片。)
3、替代前文所述内容
eg: Judy sings better than you do.(朱迪唱得比你好。)
4、表示强调
eg: Do be careful when you cross the street.(过马路时务必要小心。)
5、表示整理,装饰,修缮,
do sth. out/ do sth.up 相当于decorate
eg:The room was beautifully done out in blue color.
这个房间用蓝色系的装饰弄的非常漂亮。