dare是 敢;竟敢
How dare you ask me such a question?
must是必须,一定
you must do that
都是助词.dare也有及物动词的用法. 1.敢;胆敢[+to-v]
He did not dare to leave his car there.
他不敢把车停放在那里. 2.
挑逗,激[O2]
I dare you to cheat me.
谅你也不敢欺骗我. 3.
敢于面对,敢冒(险)
She dared the anger of her father.
她不怕惹她父亲发火