YOU SAID:
The cat jumped over the dead dog.
INTO JAPANESE
猫は死んだ犬に飛びついた。
BACK INTO ENGLISH
The cat jumped to the dead dog.
INTO JAPANESE
猫は死んだ犬に飛び乗った。
BACK INTO ENGLISH
The cat jumped onto the dead dog.
INTO JAPANESE
猫は死んだ犬に飛び乗った。
BACK INTO ENGLISH
The cat jumped onto the dead dog.
That didn't even make that much sense in English.