Used to + infinitive
Something used to happen = something happened regularly in the past but no longer happens.
We also use used to… for something that was true but is no true any more.
Ex:
- Did she used to eat a lot of meat?
- He didn´t use to like eating vegetables.
- He used to be a great meat eater until he started dating a vegan.
Be used to + ing
I´m used to something = it is not new or strange for me, I´m accustomed to doing something.
Ex:
- I´m used to eat vegetables every day
Get used to + ing
The expression get used to means become accustomed to (doing) something.
Ex:
- When I moved to London, I got used to driving on the left.
We can use the expressions be used to/get used to in different tenses or with modal verbs.
Ex:
- I can get used to eating veggies only
Note: After be/get used to you cannot use the infinitive, because to is a preposition, not a part of the infinitive.