Use to / Used to - to express habitual actions in the past that no longer occur.
Form:
Used to + base verb -----> habitual actions in past.
Use to + base verb -----> actions habitual now.
Examples:
I used to play soccer, but now I play baseball.
I didn't use to play baseball, but now I play.
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Negative yes/no questions - to express:
Confirm information-----> (Don't you work) on Fridays?
aux. subj. verb
(Aren't you and Carlos) brothers?
verb subj. subj.
Agree with someone-----> (Wasn't my cake) delicious?
verb subj.
(Didn't you have) fun at the game?
aux. subj. verb
Surprise-----> (Don't you like) pizza?
aux. subj. verb
(Weren't you) married last week?
verb subj.
Examples:
to confirm information
to agree with someone
to express surprise
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