dare用作情态动词时，表示“敢于”这个意思，主要用于疑问句、否定句及条件从句。

　　【例如】

　　Dare you go home alone?

　　Tom dare not gosintosthe haunted house.

　　How dare you say such a thing to your father!

　　I won't allow you to swim across the river, even if you dare do it. The current is too swift.

　　但在现代英语中dare, need一样用作及物动词的时候更多一些，后面可以跟不定式，用于各种结构中。

　　【例如】

　　Does Tom dare to gosintosthe haunted house?

　　I have never dared to tell him about it.

　　She stopped at door, not daring to enter.

　　If you dare to say"No", I will beat you.

　　He didn't dare to do it because he was under inspection.