Used to (I used to do) в английском языке

Study this example situation:

This is Dennis. He gave up smoking two years ago. He no longer smokes.

But he used to smoke. He used to smoke 40 cigarettes a day.

He used to smoke means that he smoked regularly for some time in the past, but he doesn't smoke now:

We use used to with the base form (used to do/used to smoke, etc.) to say that something happened regularly in the past but no longer happens:

  • I used to play tennis a lot, but now Fm too lazy.

  • "Do you go to the movies very often?" "Not now, but I used to."

  • Sue used to travel a lot. These days she doesn't go away very often.

We also use used to for past situations (that no longer exist):

  • We used to live in a small village, but now we live in Milan.

  • This building is now a furniture store. It used to be a movie theater.

  • Do you see that hill over there? There used to be a castle on that hill.

  • I've started drinking tea lately. I never used to like it before.

  • Ann used to have long hair, but she cut it some time ago.

Used to + base form is always past. There is no present. You cannot say "I use to do."
For the present, use the simple present (I do). Compare the present and past:

past he used to smoke we used to live there used to be
present he smokes we live there is

The normal question form is did ... use to ... ?:

  • Did you use to eat a lot of candy when you were a child?

The negative form is didn't use to ... (or never used to)

  • Jim didn't use to go out very often until he met Jill. (or never used to go out)

Be careful not to confuse I used to do and I am used to doing. The structures and meanings are different:

  • I used to live alone. (= I lived alone but I no longer live alone.)

  • I am used to living alone. ( = I live alone and don't find it strange or new because I've been living alone for some time.)