used 的几中用法 那位英语好的能指点一下

used to do sth 过去常常做某事（现在已经不做了）
例如：I used to read English early in the morning.

be used to do sth 用于做某事
例如:The pencile is used to draw tables.

be used to doing sth 习惯于做某事
例如:I am used to staying with him.

used to do sth
以前经常做某事(现在不做了)
be used to do sth
被用来做某事
be used to doing sth
习惯于做某事