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have sth done与have sb do sth与 have sb doing sth区别

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/07/08 02:22:23
have sth done与have sb do sth与 have sb doing sth区别
have sth done 让别人去做这件事,(某件事被做)
e.g.I'll have my hair cut.我打算去理发.
have sb do sth.让某人做某事,have是使役动词,后边要省略动词不定式to
have sb doing sth.让某人持续做某事,强调"持续"
e.g.He has us waiting for a long time.