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问题: 求助一道单选

I have no one ________ me, for I am a new comer here.
A. help B. helping C. to help
D. to have helped
B和C有什么差别?

解答:

have sb do: 这是have 的使动用法,have 的意思:使或者让某人做某事
例如:I have him clear the room.此外have 使动用法还有:
have sb/sth doing : I have the machine running
have sb/sth done: I have my hair cut
have sb/sth to do: have这里的意思是“有”
例如:I have some questions to ask.我有很多问题要问。当有这个意思曾经考过高考题:Each of us has a role( to play)to make our earth more and more beautiful.
题目的意思:因为我刚来这里所以我没有人可以求助