VERB + CURTAIN

close, draw, open, pull (across/aside/back/closed)
They sat in the dark with the curtains drawn. She pulled back the curtains, and sunlight streamed in

CURTAIN + VERB

hang
Heavy red velvet curtains hung either side of the huge window
billow
The curtains billowed madly as the wind caught them

PREP

behind a/the ~
He took a bag from a shelf behind some curtains

ADJ

final

CURTAIN + VERB

go up, open, part, rise
close, come down, fall
At the end of the play the curtain came down to tremendous applause