would like to do sth，后面接动词不定式。 Would you like some……？你想要一些……吗？Would you like to……？你愿意去做……吗？Would ......
答案是：I want to。 因为I would like to意思是我想要……，这里would like 这个短语就等于一个词want。无论would like还是want，它们都可以跟to ......
