here are some other phrases that can help you
good morning=ohayo or ohayo gozaimasu(more polite)
good afternoon or hello=konichiwa
good evening=konbanwa
good night=oyasumi or oyasumi nasai
thank you=arigatou
thank you very much=doumo arigatou gozaimasu
you're welcome=dou itashimashte
how are you?=genki desuka
I'm fine=genki desu
I love you=aishiteru
english=eigo
japanese(languange)=nihongo
japanese(people)=nihonjin
american=amerikajin
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itadakimasu=say before eating
gochisou sama deshita=say after eating
tadaima=I'm home
okaeri=welcome home (usually say when someone say tadaima)
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