亲,想问的是不是 used to do 和 be used doing 和be used for doing这几个词组呢?
1.used to do 翻译为“过去常常做某事”,
例如：I used to play ball.过去我常常踢球.
2.be used to doing 翻译为“习惯于做某事”,
例如：I am used to playing ball after dinner.我习惯于晚饭后踢球.
3.be used to do = be used for doing 翻译为“被用来做某事” ,
例如：The computer is used to work.= The computer is used for working.