Greetings

Ohayou.	Good morning.
Konnichiwa.	Good afternoon.
Konbanwa.	Good evening.
Nanika atta?	What's up?
Dou shiteru?	How's everything?
Kawatta koto aru?	What's new?
Tadaima.	I'm back (home).
Ittekimasu.	I'm leaving.