feed的过去式是什么？

vt. 喂养；供给；放牧；抚养（家庭等）；靠…为生

vi. 吃东西；流入

feed的过去式和过去分词都是fed。

例句：

We brought along pieces of old bread and fed the birds.

我们带了几片陈面包来喂鸟。

He took the compact disc from her, then fed it into the player.

他从她那儿拿过光盘，然后把它放进播放机里。

The drinking and the guilt fed on each other.

喝酒和犯罪互相滋长。