you can do nothing to help him,.you?

问题描述:

you can do nothing to help him,.you?
这是个反义疑问句,后面用can you?还是can't you?为什么?

can you
因为nothing已经把这句话否定了
这个叫否定转移.
意思和
you can't do anything to help him一样
只不过这样说不太符合逻辑
所以把can not这个否定转移到后面的anything上,从而变成了nothing