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Past Modal verbs
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The minister was able to fight for the rights of people, but he did nothing. THE MINISTER...
The minister could have fought for the rights of people, but he did nothing.
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It was wrong of the head teacher not to support the strike. THE HEAD TEACHER...
The head teacher should have supported the strike.
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Okay!
It's possible that Winston volunteered in the animal shelter, but I'm not sure. WINSTON...
Winston may/might have volunteered in the animal shelter, but I'm not sure.
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Okay!
It was not necessary for Henry to pay those taxes. His wife had already paid for them. HENRY...
Henry needn't have paid those taxes. His wife had already paid for them.
Oops!
Okay!
It was wrong of George to get involved in the fight. GEORGE...
George shouldn't have got involved in the fight.
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Okay!
It's possible that Mary Anne broke the law when she entered the abandoned house. MARY ANNE...
Mary Anne might/may have broken the law when she entered the abandoned house.
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Okay!
It wasn't necessary to go to the immigration office. They already had my record. I...
I needn't have gone to the immigration office. They already had my record.
Oops!
Okay!
It was a very big mistake that the American citizens elected such a racist president. THE AMERICAN CITIZENS...
The American Citizens shouldn't have elected such a racist president.
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Okay!
I'm certain that that man committed the crime. THE MAN
That man must have committed the crime.
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Okay!
I'm sure that she didn't feel any sympathy for him. SHE...
She can't have felt any sympathy for him.
Oops!
Okay!
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