used to

Uses of For, Since and Ago

Uses of For, Since and Ago For, since and ago are used to talk about time. For is used to indicate a period of time. It is often used with the Present Perfect.

Uses of Used to and Be Used to

Uses of Used to and Be Used to Used to: an action or habit that was common in the past but not anymore. Be used to: being accustomed to something. It is not unusual anymore.