used to (do)

Question 1

I used to do something = I

Answer 1

did it often in the past, but not any more:
(I used to play tennis a lot, but I don’t play very much now.)

Question 2

We also use used to … for things that

Answer 2

were true, but are not true any more
(I used to think Mark was unfriendly, but now I realise he’s a very nice person)

Question 3

You cannot say:

Answer 3

‘I use to do’

Question 4

To talk about the present, we use the

Answer 4

present simple (I do)

Question 5

The normal question form is

Answer 5

did (you) use to … ?

Question 6

The negative forms are

Answer 6

didn’t use to
used not to

Question 7

compare:
I used to watch TV a lot
I was watching TV

Answer 7

(= I watched TV often in the past, but I don’t do this any more)
(= I was in the middle of watching TV)