used to do,be used to doing和 be used to do的区别,并举例说明
问题描述：
used to do,be used to doing和 be used to do的区别,并举例说明
答
used to do 是曾经做过某事，一般用于过去时，如I used to be a teacher.我曾经是一名老师。
be used to doing习惯做某事，例如：I'm used to having a cup of coffee before dinner.我习惯吃饭前喝杯咖啡。
be used to do某物被用于某处。例如：Elephants can be used to do some heavy jobs.
答
used to do 过去常常
be used to doing 习惯做某事
be used to do 被用于
答
used to do指：过去常常
例：I used to go to school on foot.
be used to doing指：习惯于做某事
例：He used to taking a shower after lunch.
be used to do指：被用于,主语往往是物.
例：This tool is used to open the box.
答
used to do 是曾经做过什么
be used to doing是习惯做某事
be used to do是被用做的意思