eat的過去式怎么說

　　Have you eaten yet?

　　你吃飯了嗎？

　　Feed the dogs because they haven't eaten.

　　喂喂這幾條狗，因為它們還沒吃呢。

　　Don't give me any more. I've eaten masses!

　　別再給我了，我已經吃了很多了！

　　Rennie had eaten his supper in the canteen.

　　倫尼已在食堂吃過晚飯。