YOU SAID:
a cat is eating a mouse...... a a cat cat is is eating eating a a mouse mouse
INTO JAPANESE
猫がネズミを食べています...... 猫 猫はネズミを食べています ネズミを食べています
BACK INTO ENGLISH
The cat is eating a mouse... Cat The cat is eating a mouse Eating a mouse
INTO JAPANESE
猫はネズミを食べています... 猫 猫はネズミを食べています ネズミを食べています
BACK INTO ENGLISH
The cat is eating a mouse... Cat The cat is eating a mouse Eating a mouse
You've done this before, haven't you.