usd to do something与be usd to doing something区别

e used to doing sth。是习惯做某事eg:I'm used to getting up early。我习惯早起。be used for doing sth。是某物被用于……,eg：The pencil is used for drawing and writing。铅笔可以用来画画和写字。be used to do sth。和be used for doing sth意思一样,只是for doing的感觉是某物的一般情况,一直延续的一种状态；而to do 更多的代表当下,要用这个东西做什么,代表此刻的点动作。