Good afternoon
xiàwǔ hǎo! 下午好!
I don't know.
wǒ bù zhīdào! 我不知道.
I know now.
wǒ zhīdào le!
Sorry.
duìbùqǐ 对不起!
Nice to meet you!
hěn gāoxìng rènshí nín! 很高兴认识您!
Thank you.
xièxiè 谢谢!
Goodbye.
zàijiàn! 再见!
Good early morning.
zǎoshang hǎo! 早上好!
Hello polite way!
nín hǎo! 您好!