used to的用法详解

Used to do sth

used to do sth 表示“过去常常做某事”，现在已经不再做了

I used to cook, but I don't have time to cook now.

我以前总做饭，但是现在没时间做了

Tom used to be a couch potato, but he works out everyday now.

Tom以前特别宅，但现在每天都健身

Be used to (doing) sth

Be/get used to (doing) sth 表示“习惯于(做)某事”, 现在依旧在做

He's used to staying up late.

他已经习惯熬夜到很晚了

I've already got used to being a vegetarian.

我已经开始习惯作素食主义者了

be used to do sth

be used to do是“被动语态”，表示“被用于做某事”

It can be used to do the same thing.

这个可以用来做相同的事情

Beer is used to be the party drink.

啤酒可以被用作派对饮品