play...

Mowimy

1. Play a guitar czy moze Play guitar czy moze Play the guitar ?

2. Could you help me do up my dress czy Could you help me TO do up my dress ?

3. Jak powiedziec - Jesli tego nie bede mial/jesli tego nie dostane to...

If I don't get it I won't bla bla bla ?

1) w 99% przypadków: play THE guitar

2) to

3) ok

2. "to" is optional after "help". In formal English people usually put "to" after "help", but "help" without "to" is not incorrect, even in formal English.

można też użyć with - pomóc komuś w czymś