YOU SAID:

Do not speak Japanese or I will punch my computer screen

INTO JAPANESE

日本語を話さないでください、さもないとコンピュータの画面を殴ります

BACK INTO ENGLISH

Don't speak Japanese or I'll punch your computer screen

INTO JAPANESE

日本語を話すな、さもないとコンピュータの画面を殴るぞ

BACK INTO ENGLISH

Don't speak Japanese or I'll punch your computer screen