Thank you in cantonese

If someone gives you something, you say "do ze" (sounds sorta like "dau je" if you can't read jyutping).

If someone does something for you (like a waiter refills your water), you say "m goi."

Of course, you can add little things to the end to change the meaning.

If you add "saai" at the end like "m goi saai" then you're saying "thanks for everything."

If you add "saai nei" at the end like "m goi saai nei," then you're emphasizing that you want to thank them. It gives them a sorta "All thanks to you" kind of feeling.

Finally, I think it's really cute when cantonese people say this, but you can say "deng kiu," which is how they say the English version of "thank you" with a little accent. :)