YOU SAID:

The brown fox was quick, and it jumped over the fence fast.

INTO JAPANESE

茶色のキツネは速かった、そしてそれはフェンスを速く飛び越えた。

BACK INTO ENGLISH

The brown fox was fast and it jumped quickly over the fence.

INTO JAPANESE

茶色のキツネは速かったので、すぐにフェンスを飛び越えました。

BACK INTO ENGLISH

The brown fox was so fast that it immediately jumped over the fence.

INTO JAPANESE

茶色のキツネは速すぎてすぐにフェンスを飛び越えました。

BACK INTO ENGLISH

The brown fox jumped over the fence immediately because it was too fast.

INTO JAPANESE

茶色のキツネは速すぎたのですぐにフェンスを飛び越えました。

BACK INTO ENGLISH

The brown fox jumped over the fence immediately because it was too fast.