may开头的疑问句的否定回答用can't。can't的例句：You can't run out on my wife and me like that（你不能就那样抛弃我和我妻子）。

can't的例句：You can't think how glad I was to see them all go（你都想象不到，我看到他们全都走了，心里是多么高兴）；If you take my work away I can't be happy anymore（如果你炒我鱿鱼，我就再也高兴不起来了）。