英語會話問題,關於便利店

Do you need any bags?
(Since you only have plastic bags, the customers will know you are going to give them plastic bags, so it's redundant to mention that again. Of course, it's not wrong to say it.)

Twenty dollars please.

Would you like to put more money into your octopus card?

Do you need a bag ?

Ten dollars Thanks .

Do you need to value-added for your octopus card ?

do u need a bag?
直接講個價錢出黎 eg. $20.5 twenty dollars and 50cents
add value

Do you need a plastic bag?
It costs $xx
Add Value

你需唔需要膠袋??

口語化: Plastic bag?
正常: Do you need a plastic bag?

收你幾多幾多錢?

不明白你會這樣問?

增值

Add Value

你需唔需要膠袋??= Do u need plastic bag?
收你幾多幾多錢?=How much does it cost?
增值=add value