Level 9b Grammar Review 2 | Baamboozle - Baamboozle

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Which past modal is used to express disbelief/Impossibility?

could not have + past participle

The lights are off. They _________ gone home already.

must have

Which past modal is used to express regret over an action that was taken?

Should not have + past participle

Which past modal is used to express Possibility?

could/might/may + have + past participle

He _______ been sleeping. He answered right away.

couldn’t have (it is impossible that he was asleep)

Error correction: He couldn’t have stole the money. He was in class.

stole → stolen

He ________ taken the earlier train. Now he’s late.

Should have (he did not take the earlier train) REGRET

I ______ left my phone at school. I can’t find it anywhere.

must have

She ____ studied more. That’s why she failed the test.

should have

Error correction: She must not have forgot her keys at home.

forgot → forgotten

Right or wrong: She must have left early. The room is empty.

Right

You ______ spoken to her like that. It was very rude.

shouldn’t have (you did & and it was very rude)

Which past modal is used to express logical conclusion?

must have + past participle

I’m not sure, but she ________ told the teacher about it.

could/might/may have

They __________known the answer. It was never mentioned in class.

couldn’t have (disbelief | Impossibility)

Error correction: We should had arrived earlier for the concert.

should had → should have

Which past modal is used to express regret over an action that was not taken?

Should have + past participle

Right or wrong: He could have broke the window by accident.

Wrong – broke → broken