In this lesson, I will introduce how to say "Please don't do something" in Japanese.

In order to ask someone not to do something, you need to use a negative plain form together with でください.

ここ　で　たべない　でください。

Please do not eat here.

ここ　で　はしらない　でください。

Please do not run here.

おおきなこえ　で　はなさない　でください。

Please do not speak loudly.

きょう　は　おさけ　を　のまない　でください。

Please do not drink alcohol today.

Please refrain from using the expression using a te-form together with はいけません, which means "You must not do something" unless you are in a position of authority or the action is prohibited by regulation. It is strong expression.

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