Konnichiwa!! Ohayō gozaimasu.

lolx. i started trying to learn some japanese words since koini ochite, tat song. its nice. and i heard it, i feel tat japanese word r nice to speak.

O-genki desu ka?(oh-GEN-kee dess-KAH?)
Genki desu.(GEN-kee dess)

and tat means how are you and im fine, thankyou.

nice to meet you: Hajimemashite. (hah-jee-meh-MOSH-teh)
thankyou: Dōmo arigatō. (doh-moh ah-ree-GAH-toh)
youre welcome: Dō itashi mashite. (doh EE-tah-shee mosh-teh)
im sorry: Gomen-nasai. (goh-men-nah-sigh)
excuse me: Sumimasen. (soo-mee-mah-sen)

Yes.
はい。 Hai. (HIGH)
No.
いいえ。 Iie. (EE-eh)

and, dun say sayonara.
sayonara ish saying goodbye forever.
should say Sore dewa. (SOH-reh deh-wah).
tats informal goodbye.

and, dun try shouting for help in japanese.
imagine you are sinking in the middle of the ocean and you had to shout for help:
Tasukete! (tah-soo-keh-teh!)
you're alr half drowned by the time you finish tat sentence! just sae a short and simple HELP will do.

say good evening is Konbanwa.
b4 you sleep, tell your parents or sibling: Oyasuminasai. (oh-yah-soo-mee-nah-sigh)
ppl thot you pro in japanese, so start babbling to you in japanese, you should say,
Wakarimasen. (wah-kah-ree-mah-sen), Nihongo [yoku] hanasemasen. (nee-hohn-goh [yo-koo] hah-nah-seh-mah-sen)
you mean, i dun understand, i cant speak japanese well.

you are in japan. you are lost. and seriously in need of a toilet. go to any local japanese, ask them:
Toire wa doko desu ka? (toy-reh wah DOH-koh dess kah?)

more here: http://www.japaneselifestyle.com.au/japanese_language/japanese_words.htm
Sore dewa. gtg. ^^