In American English the following is also possible:
I lost my key. Can you help me look for it?
I've already seen that film
Have you finished your homework yet?
I've already seen that film OR I already saw that film.
Have your finished your homework yet? OR Did you finish your homework yet?
Have you got a car?
He hasn't got any friends.
He doesn't have any friends.
She has a beautiful new home.
She's got a beautiful new home.
British English - at the weekend
British English - in a team
British English - please write to me soon
Burnt OR burned
dreamt OR dreamed
leant OR leaned
learnt OR learned
smelt OR smelled
spelt OR spelled