Used to (do)

Əvvəlcə misallara baxaq:

Dennis stopped smoking two years ago. He doesn't smoke any more.
But he used to smoke.
He used to smoke 40 cigarettes a day.
'He used to smoke' = he smoked regularly for some time in the past, but he doesn't smoke now. He was a smoker, but now he isn't.

'Something used to happen' = Nəsə keçmişdə daimi olaraq baş verirdi amma indi baş vermir:

I used to play tennis a lot but 1 don't play very often now.
Diane used to travel a lot. These days she doesn't go away so often.
'Do you go to the cinema very often?'   'Not now, but I used to.' (= I used to go...)

Used to (do) ifadəsindən həmçinin nəyinsə əvvəllər doğru olduğunu, lakin indi belə olmadığını bildirməl üçün istifadə olunur:

This building is now a furniture shop. It used to be a cinema.
I used to think he was unfriendly but now I realise he's a very nice person.
I've started drinking coffee recently. I never used to like it before.
Janet used to have very long hair when she was a child.

Used to (do) ifadəsinin indiki zamanı mövcud deyil, çünki o keçmişə aiddir. Onu use to (do) şəklində istifadə etmək olmaz:

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

We used to live in a small village but now we live in London.
There used to be four cinemas in the town. Now there is only one.

Normal qaydada sual forması did köməkçi felinin köməyilə düzəlir:

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

İnkar forması isə didn't köməkçi feli vasitəsilə düzəlir (used not to... forması da mümkündür):

I didn't use to like him. (və ya I used not to like him.)

I used to do ilə I was doing ifadələrini müqayisə edək:

I used to watch TV a lot. (= I watched TV regularly in the past, but I no longer do this)
I was watching TV when the phone rang. (= I was in the middle of watching TV)

I used to do və I am used to doing ifadələri çox zaman səhv salınır. Lakin onların həm strukturu, həm də mənaları fərqlidir:

I used to live alone. (= I lived alone in the past but I no longer live alone)
I am used to living alone. (= I live alone and I don't find it strange or new because I've been living alone for some time)