YOU SAID:

Sometimes I don't understand why people do the things that they do.

INTO JAPANESE

時々 私は、人々 はなぜ彼らが行うことを理解しません。

BACK INTO ENGLISH

Sometimes, people do not understand why they do that.

INTO JAPANESE

時に、人々 は彼らがそれを行う理由を理解していません。

BACK INTO ENGLISH

When people do not understand why they do it.

INTO JAPANESE

とき人々 は彼らがそれを行う理由を理解していません。

BACK INTO ENGLISH

When people do not understand why they do it.