eat的過去式和過去分詞是什麼意思

例句：

Do you eat sweets, cakes or sugary snacks?

你吃糖果、糕點或甜點心嗎？

He refused for reasons of conscience to eat meat.

他為了良心好過而拒絕了吃肉。

My wife and I discovered some superb places to eat.

我妻子和我發現了一些很棒的`吃飯的地方。

Freda heated up a pie for me but I couldn't eat it.

弗雷達為我熱了一塊餡餅，可我不能吃。