a. as an ordinary verb, followed by the infinitive with to.
- He dares to say what he thinks.
She didn’t dare to tell him.
b. as a modal auxiliary verb
- She doesn’t dare to go out at night.
They didn’t dare to open the door.
We can use the modal auxiliary form daren’t to say that somebody is afraid to do something at the moment of speaking.
- I daren’t look.
- I dare say it’ll rain tomorrow.
I dare say you’re ready for a drink.