题目内容：

—Will this fish until tomorrow?
—Will this fish keep until tomorrow?
—Only if you put it in the fridge.
这里面为什么不用be kept?

优质解答

keep用作vi.（不及物动词）时有一个含义：“（食物等）保持不坏”,例句是：in such weather meat won't keep long.
不及物动词一般表示一种状态,是没有被动式的,只有及物动词才有被动式,因此这里不能有be kept