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she doesn't do her homework in the afternoon;这句中为什么用doesn't

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/10/06 15:15:20
she doesn't do her homework in the afternoon;这句中为什么用doesn't do sth,而不用doesn't to do sth
因为does 是助动词,后面需要跟动词原形.
再问: 不定式也不行啊?~~
再答: 不行。 不定式不能跟在助动词后面。
再问: 要是这么改下呢?把doesn't to do换成doesn't have to do可以不?
再答: doesn't have to do 可以的。 意思是:她不需要在下午做家庭作业。