高一英语 1. be used to doing 2. used to do 3. be used to do 分别是什麽意思?

高一英语  1. be  used   to  doing      2. used  to do  3. be used  to do    分别是什麽意思?

1.be used to doing = get used to doing sth习惯于做某事,也可以直接跟名词2.used to do sth.= often + 过去式,过去常常做某事3.be used to do = be used for doing被用来做某事