Used to Do vs Be Used to

It's easy to confuse used to do and be used to. Both forms look alike, but they have very different meanings and structures.

First let's look at used to do, or used to + verb. When I say I used to do something, I mean that I did something regularly in the past which I no longer do now. For example, "When I was a child, I used to fight with my brother, but now we get along."

We can also use used to do to talk about something that was true in the past but is not true now. For example, "Playing with dolls used to be Sarah's favorite activity." In other words, Sarah's favorite activity in the past was playing with dolls, but it is no longer something she likes to do.

Be used to means something different. If you are used to something, you are accustomed to it. It is normal or usual for you. Be used to is always followed by a noun or gerund (verb ending in -ing). For example, I can say "I am used to the rain," or that "I am used to staying up late."