(レジで袋はいらないので)「そのままでいいです」って英語でなんて言うの？

The first two are probably the best, but the third one is also natural.

If you want to refuse an offer, you can simply say "No thanks", "No that's okay." or "I'm fine thanks."

The three sentences you see above are terrific ways to express to a cashier that you do not need a bag once you check out. The second sentence(I'm good, thank you) is a sentence we use a lot in English if we are rejecting something, like a service or an item. For example, if you are carrying a lot of bags and someone offers to help, but you do not want their help you can say "I'm good, thank you".

Depending on your mood, you may choose to be polite by adding 'thank you' or not, as in the second example response. Body language is always important. If you say 'No,' but smile, it is not rude. Smiling has many functions in the UK, especially when it comes to being polite. A smile softens the hardest words. Also remember, 'No' is connected with 'thank you,' and 'Yes' is connected with 'please.' 'No thank you' and 'Yes please.'

-No thank you, I do not need a bag. This is a polite way of saying that you not taking a bag. -No bag, thanks. This is a short in formal way of saying that you do not need a bag. Example 1 Cashier: Do you want a bag? You: No thank you, I do not need a bag. Example 2 Cashier: Are you taking a bag? You: No bag, thanks.

When you're trying to reject an offer for a shopping bag, then you can say: -No bag, thanks. -No thank you. -No thank you, I don't need a bag. I have my own bag.

The first answer is a bold explanation that you don't want the bag, the second one, you don't need to refer to the bag because you're already being asked about a bag, so saying "no thanks" signifies to them that you don't want a bag. The third answer is being polite and appreciative for their offer along with saying you don't want a bag