YOU SAID:

When he had to picnic on the beach, he purposely put sand in other people’s food.

INTO JAPANESE

彼はビーチでピクニックをしなければならなかったとき、意図的に砂を他の人の食べ物に入れました。

BACK INTO ENGLISH

When he had to have a picnic on the beach, he intentionally put sand in someone else's food.

INTO JAPANESE

彼はビーチでピクニックをしなければならなかったとき、彼は意図的に誰かの食べ物に砂を入れました。

BACK INTO ENGLISH

When he had to have a picnic on the beach, he deliberately put sand in someone's food.

INTO JAPANESE

彼はビーチでピクニックをしなければならなかったとき、彼は故意に誰かの食べ物に砂を入れました。

BACK INTO ENGLISH

When he had to have a picnic on the beach, he deliberately put sand in someone's food.