To sensei or senpai(senior) = ts
To friend or junior = tf

-To say hello-

To the person you first met
All= hajime masushite

Good morning
ts = ohaiyou gozaii masu
tf = ohaiyou

Good afternoon or nice to meet you
All = konnichiwa

Nice to meet you(at night)
All = konbanwa

Good night
ts = oyasumi nasai
tf = oyasumi

How are you
All = ogenki desuka

请多多指教（I don't know in English please help)
ts = douzo yoroshiku onegai shimasu
tf = yorushiku

Me too
ts = kochira koso


-To introduce-

Allow me to introduce myself
All = jikosyoukai itakimasu

My name is Billy.
All = watashi no namae wa Billy desu.

I am Billy.
All = watashi wa Billy desu.

This is Billy.
All = kochira wa Billy san desu.

Sorry, what is your name?
ts = shitsurei desuga, onamaewa?
tf = namaewa nandesuka?

-To Thank-

Thankyou always take care of me.
ts = itsumo osewani nari masuta.

Thank you
ts = doumo arigatou gozai masu
tf = arigatou

It was nothing
All = ie taishita koto dewa arimasen
All = ii desu
All = ie ie


-To Sorry-

I am sorry.
ts = sumimasen
ts = gomennasai
ts = moushiwake arimasen
tf = gomen

Sorry for the waiting
All = omatase shimashita

Sorry, I am late.
All = osoku natte sumimasen.

Won't be next time.
All = kondokara kiwotsukemasu.

Are you angry? Sorry.
All = okotta? gomenne.

Is ok!
All = daijyoubu
All = nandemo nai kara