DARE apuverbinä :
How dare you say things like that? = How do you dare to say things like that.
I dare not utter a word. = I don't dare to utter a word.

NEED:
He need not come. = He doesn't need to /  have to come.
You needn't have bothered. = Ei Sinun olisi tarvinnut.

We need to have that broken window mended.
a Member of Parliament = an MP
a PM = a Prime Minister

a power cut / a blackout / an outage