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.