第1个回答 2014-06-04
①used to do 过去常常(表示现在不再)
eg: I used to swim in the lake near my village when I was young.
②be used to do 被用于。。。=④be used for sth./doing sth.
eg: Wood can be used to make paper.
③be used to doing习惯于做某事
eg: My grandpa is used to going for a walk after dinner.