I

Wo

You

Ni/Ni Men(pl.)

Please

Qing

Yes

Dui

No

Bu/Bu Shi/Bu Dui

Sorry

Dui Bu Qi/Bao Qian

It doesn't matter

Mei Guan Xi

No problem

Mei Wen Ti

Happy

Gao Xin

Love

Xi Huan/Ai

Thank you

Xie Xie

You're Welcome

Bu Ke Qi