1.be used for 被用来做某事 Pen is used for writing。
2.star
3.use to do SIT。
1.be used
2.be used to do sth 被用来做某事 be used to doing sth 现在习惯做某事 used to do sth 过去习惯做某事。
3.be used to do sth. be used for doing sth。
used to do sth 过去常做某事be used to do 被用来做某事be used to doing 习惯做某事
Something was a person used to do somethin。
be used to do st。
