YOU SAID:

I woke up early because I had a nightmare about dead cats.

INTO JAPANESE

私は死んだ猫の悪夢を見たので早く起きた。

BACK INTO ENGLISH

I got up early because I had a nightmare about a dead cat.

INTO JAPANESE

私は死んだ猫の悪夢を見たので早起きした。

BACK INTO ENGLISH

I got up early because I had a nightmare about a dead cat.