过去 I ate vegetables.
I was eating vegetables.
They were eating vegetables.
I had eaten vegetables.
I had been eating vegetables.
现在
I eat vegetables.
He eats vegetables.
I'm eating vegetables.
She is eating vegetables.
We are eating vegetables.
I have eaten vegetables.
I have been eating vegetables.
未来
We will eat vegetables tomorrow.
We will be eating vegetables.
We will have eaten vegetables.
We will have been eating vegetables.
虚拟语气would
We would eat vegetables tomorrow.
We would be eating vegetables.
We would have eaten vegetables.
We would have been eating vegetables.
虚拟语气should
We should eat vegetables tomorrow.
We should be eating vegetables.
We should have eaten vegetables.
We should have been eating vegetables.
虚拟语气could
We could eat vegetables.
这句话暗示了现在或将来的可能性或建议。
We could be eating vegetables.
这也暗示了一个建议，但将动作置于现在进行时态。 它提出了一种现在可能发生的替代行动。 例如，如果有人感到无聊或正在寻找一些有成效的事情做，他们可能会这么说。
We could have eaten vegetables.
这表示过去错过了机会或可能性。 演讲者正在思考哪些事情本来可以做，但没有做。
We could have been eating vegetables.
这句话将过去进行时与假设情况结合起来，表明在过去的某个特定时间里，他们有机会正在做某事，但没有。 它常常带有一种对如何度过时间的遗憾或事后认识的语气。
