The document discusses the meaning and usage of "used to" followed by a verb to describe a past habitual action or state that no longer exists. It notes that "used to" indicates a discontinued past habit or action, whereas "be used to" something means being accustomed to it. Examples are provided to illustrate using "used to" in positive sentences, negative sentences, and questions to talk about actions or habits from the past.

1. Meaning of used to + verb = an action or habit that was common in the
PAST but not anymore (discontinued action or habit)
She used to study very hard when she was in university.
I used to speak French very well, but now I cannot speak it well.
He used to be fat and lazy, but not he is trim and fit.
Do not confuse with to be used to + noun = accustomed to something
(normally out of habit or experience)
I am used to waking up early.
They are used to hard work.
Eskimos are used to cold weather.
Used to vs. Use to

2. Notice how used to ends in –ed which normally
means the verb is in the past tense.
Used to in Positive Sentences (used to + verb base)
I used to drink coffee every morning but now I drink tea.
She used to live in London but now she lives in New York.
He used to play soccer professionally but he had to quit because
of an injury.

3. Used to in Negative Sentences (didn’t + use to + verb base)
She didn’t use to exercise at all, but she runs marathons now.
They didn’t use to want a big house, but they want one now because
they have four kids.
I didn’t use to like vegetables as a kid, but now I love all kinds of
vegetables.

4. Used to in Questions (did + subject + use to + verb base)
Did you use to ride the school bus?
What did you use to do after school?
Where did you use to go on family vacations?

5. Compare Simple Past vs. Used to
Positive I walked to school. I used to walk to school.
Negative I didn’t walk to school. I didn’t use to walk to school.
Question Did you walk to school? Did you use to walk to school?