have to / had to /don't / didn't have to

These modals talk about obligations

things that you have to do

and things that you dont have to do

Examples

HAVE TO

1. You have to get up early because it is the rule of our school.

2 . You have to stop when the traffic lights are red

Examples

Dont have to

1. I don't have to be a very social student because there is no rule.

2. You don't have to wait for me, if you like to go you can go.

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