帮我造下句子

should have done

must have done

can't have done

may/might have done

would have done

短点的句子，谢谢

My fault. I should have told you earlier.
这是我的错。我应该早点告诉你。

Something must have gone wrong.
一定有什么事不对劲。

According to what he said, he may/might have seen a UFO.
根据他讲的话，他可能看见过UFO。
I was busy that day. Otherwise I would have gone there with them.
我那天很忙，否则，我就和他们一起去那儿了。

You should have finished the homework.

John must have knowed the idea.

Frank can't have cleaned the house.

She may/might have played the computer game.

Ben would have met his friends.

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