used to doing和used to do用法

应该是be used to doing，习惯做某事， used to过去常常做某事。比如
Mike used to eat with knife and fork,but now he is used to eating with chopsticks.
麦克过去用刀叉吃饭，现在习惯于用筷子了。

used to doing意味习惯于做某事
be used to + doing： 对……已感到习惯，或"习惯于"，to是介词，后需加名词或动名词。
He is used to a vegetarian diet.
Scarf is used to taking a walk.(现在习惯于散步)
used to do意味过去经常常做某事

be/ get used to doing习惯于做……
I am used to getting up early.
used to do过去常常做……（现在不做了）
I used to play badketball after school, but now I don't.
be used to do sth. 被用于做……
Wood is used to make paper.
加油！

前者是习惯于，后者是过去常常

be used to doing 习惯于做某事,be可以用作各种时态.
used to do 过去常常,只限于过去的含义.
例如：I am used to going to school by bike now.
i used to go to school by bike.

I used to smoke。我以前抽烟现在不抽。
I am used to being punished.我都被罚惯了。
be used to doing 表示习惯……，一定要有‘be’