Be used to do sth. 被用來做某事

　　例句：Wood is often used to make furnitures.

　　Be used to doing sth, 習(xí)慣于做某事

　　例句; He is used to geting up earlier.

　　Used to do sth, 過去是，過去常常

　　例句: Thet used to play computer games together.