YOU SAID:

My cat was walking on the bridge. He fell off

INTO JAPANESE

私の猫は橋の上を歩いていた。 彼は落ちた

BACK INTO ENGLISH

My cat was walking on the bridge. He fell.

INTO JAPANESE

私の猫は橋の上を歩いていた。彼は倒れた。

BACK INTO ENGLISH

My cat was walking on the bridge. He fell down.

INTO JAPANESE

私の猫は橋の上を歩いていた。彼は倒れた。

BACK INTO ENGLISH

My cat was walking on the bridge. He fell down.