USED TO 

used to       +          infinitive

we use this expression to talk about habits or repeated actions in the past which we don´t do in the present . we also use it to talk about states in the past which are no longer true.

AFFIRMATIVE SENTENCES:

subject     +    used to    +   verb (present)   +   comp.

my family used to travel to ica but now no .

she used to run in the park but now no .

pancha used to eat pizza in the restaurant but now no .

i used to have long hair.

NEGATIVE SENTENCES:

didn´t = did not 

subject    +   didn´t   +   used to    +   verb (present)   +   comp.

• my relatives didn´t used to sing an birthdays . they used to listen us .
• i didn´t use to play the piano  when i was a child.
• she didn´t use to like chocolate , but she does now.
• i didn´t use to want to have a nice house.

QUESTIONS:

did   +   subject   +   use to    +   verb(present)   +   comp.

1. did she use to drink soda.?
2. did you use to eat ice cream when you were child?
3. did he use to have little cars?