第1个回答 2013-09-18
used to do 过去做某事
be use for + n/v 用来做。。。
be used to do/sth. 被用做某事
be used to doing 过去常常做某事
be used as + n 被用作什么使用本回答被网友采纳
第2个回答 2013-09-18
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.
第3个回答 2013-09-18
be used to do
use是主动的
used是被动的
第4个回答 2013-09-18
be used to doing sth.
use sth to do
be used to do