Dare, meaning have the courage to do something, can also be used in two ways:
* as an ordinary verb followed by an infinitive with to, with s in the third person singularand with questions and negatives formed with do:
He never dares to criticise her for wasting money and she doesn’t dare to interrupt him when he’s working.
* as a modal auxiliary verb followed by an infinitive without to, with no third person singular s and with questions and negatives without do:
Dare she tell him what she thinks about him? She daren’t say anything. He will only shout at her. "How dare you speak to me like that?" he will say.
Differences in use are not as fixed or clear cut between doesn’t dare to and daren’t as they are between doesn’t need to and needn’t, except in expressions or collocationssuch as:
doesn’t dare to与daren’t在用法上的差别不像doesn’t need to和needn’t那么固定或清晰，除了在以下这些表达和搭配中：
* How dare you?
eg: How dare you walk away when I’m talking to you?
* I dare you to…
I dare you to go up to him and ask him for a date.
* I dare say…
I dare say you’re pretty hungry after all that cycling.
In this last example, I dare say means I suppose.
最后一例中的I dare say的意思是I suppose，我料想。