Would you like to do sth.?肯：yes,i would.否：no,i wouldn't.Would you like sth.?(一般是主人问客人要不要吃些什么或是服务员问顾客)肯：yes,pleass.否：no,thanks.
肯定：yes，I‘d like否定：no，sorry
yes, i'd like to. No, i don't like.
