YOU SAID:

the dog ate the cat in the bed

INTO JAPANESE

犬はベッドで猫を食った

BACK INTO ENGLISH

The dog ate the cat in bed.

INTO JAPANESE

犬はベッドで猫を食った。

BACK INTO ENGLISH

The dog ate a cat in bed.

INTO JAPANESE

その犬はベッドで猫を食えた。

BACK INTO ENGLISH

The dog ate a cat in bed.