YOU SAID:

Never did the old man run after the young mistress.

INTO JAPANESE

老人は若い愛人を決して追いかけませんでした。

BACK INTO ENGLISH

The old man never pursued his young mistress.

INTO JAPANESE

老人は若い愛人を決して追いかけなかった。

BACK INTO ENGLISH

The old man never pursued his young mistress.