YOU SAID:

外の世界のことは教えてくれない

INTO JAPANESE

外の世界のことは教えてくれない

BACK INTO ENGLISH

He doesn't tell me about the outside world.

INTO JAPANESE

彼は外の世界の話をしてくれない。

BACK INTO ENGLISH

He doesn't talk about the outside world.

INTO JAPANESE

彼は外の世界の話をしない。

BACK INTO ENGLISH

He doesn't talk about the outside world.