be used to do 被用来做某事 be used to doing/sth 习惯做某事 used to do 过去常常做某事 be used to

(1) 被用做..be used to do The quilt is used to keep warm.

(2)习惯..be/get used to doing He has got used to new enviroments. be used for +名词/动名词 The quilt is used for keeping warm. used to do (did something very often in the past) 过去常做... He used to go there. But now, he seldom go there.