唔知牙...

呢位先生要d咩
What do you want,sir?

Can I help you,sir?

比較禮貌的說法：

呢位先生要d咩
What would you like,sir?

呢位先生要d咩?
What do you want to have?

What can I do for you, Sir ?
Or
Can I help you, Sir ?

What do you want , sir?


應該係咁