45 情态动词+have+过去分词

对过去的推测

He may have visited us while we were out.

表示没做应该做的事

You should have got up at seven.

有关过去事情的推测

You may have heard this joke before.

The keys might have fallen out of your pocket.

He could have left his umbrella in the shop.

He must have told me a lie.

The game should have started at noon.

He cannot have accepted your plan.

“I missed the TV program last night.” 

“My brother may have taped it.”

“They’re very late.” 

“Yes, they must have lost their way; they didn’t have a map.”

She cannot have won the games; she looked very sad.

对过去的行为表示后悔

You should have taken some medicine.

The clerk ought to have given you a receipt.

We should not have turned left at the last corner.

You need not have bought so much meat.

You need not have come.

You didn’t need to come.

He should have gone to the doctor earlier.

You ought to have taken my advice.