eat的过去式和过去分词是什么意思

例句：

Do you eat sweets, cakes or sugary snacks?

你吃糖果、糕点或甜点心吗？

He refused for reasons of conscience to eat meat.

他为了良心好过而拒绝了吃肉。

My wife and I discovered some superb places to eat.

我妻子和我发现了一些很棒的吃饭的地方。

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

弗雷达为我热了一块馅饼，可我不能吃。