1. USED TO AND WOULD

2. To talk about past habits and situations that were different in the past.
His family used to be extremely poor.
When he was young, he would spend time studying medicine.

3. We DON’T USE IT when we say how long a past habit or situation lasted
He used to go to college for five years.

4. We don’t use would with state verbs- we use used to
He used to love reading
He would love reading

5. We avoid using would with questions and negatives
Did he use to play with cards and dolls?
NO! Would he play with cards and dolls?
People didn’t use to become famous so easily in the past.
NO! People wouldn’t become famous so easily in the past.