be used to do sth.used to do sth.be used to dong sth.之间有什么区别?
问题描述：
be used to do sth.used to do sth.be used to dong sth.之间有什么区别?
答
be used to do sth 什么东西被用做什么 举个例子,Money is used to buy things .钱是用来买东西的used to do sth 过去常常（意思是现在已经没有了）I uesed to smoke.我过去曾经吸烟（现在没吸了）be used to dong s...