Modals of probability
Why is that man looking around like that? He _____________ be lost.
Why is that man looking around like that? He MUST be lost.
_________________ you swim when you were 10?
COULD you swim when you were 10?
"Someone might have heard us talking on the phone."
Did anyone hear them talking?
Yes
No
Maybe
Maybe
I (Leave) ___________ before I finished my work, but I did
I SHOULDN'T HAVE LEFT before I finished my work, but I did
You must (try) ________ peanut butter when you were in the U.S. Everyone eats it there.
You must HAVE TRIED peanut butter when you were in the U.S. Everyone eats it there.
John always fails the tests, even though he’s clever. He _____________ study enough.
John always fails the tests, even though he’s clever. He CAN'T study enough.
We _________________ get to the meeting on time yesterday because the train was delayed by one hour.
We COULDN'T get to the meeting on time yesterday because the train was delayed by one hour.
"Jen, you could have gone with Steve!"
Did Jen go with Steve?
YesNo
Maybe
No
We (Do) __________ differently, could we?
We COULDN'T HAVE DONE things differently, could we?
They might (go) __________ to the play last night. It was playing near their apartment.
They might HAVE GONE to the play last night. It was playing near their apartment.
Julie _____________ have much money, or she would buy a new car. Her old one is falling apart.
Julie CAN'T have much money, or she would buy a new car. Her old one is falling apart.
I looked everywhere for my glasses but I _________________ find them anywhere.
I looked everywhere for my glasses but I CAN'T find them anywhere.
"We should have invited Rita to come to dinner with us."
Did they invite Rita?
Yes
No
Maybe
No
Bethany (Tell/already) _________ Dave. But I haven't talked to her yet. She'll tell us tonight.
Bethany MIGHT already HAVE TOLD Dave. But I haven't talked to her yet. She'll tell us tonight.
Jean and Ralph shouldn’t (buy) ________ the SUV. It uses too much gas.
Jean and Ralph shouldn’t HAVE BOUGHT the SUV. It uses too much gas.
Where’s Lucy? She _____________ be at the library, as she often goes there at this time.
Where’s Lucy? She MUST be at the library, as she often goes there at this time.
I _________________ drive a car until I was 34, then I moved to the countryside so I had to learn.
I COULDN'T drive a car until I was 34, then I moved to the countryside so I had to learn.
"I must have left my keys at home."
Did she leave her keys at home?
Yes
No
Maybe
Maybe
Harry (Get) _________ home already. But I doubt it.
Harry MIGHT HAVE GOTTEN home already. But I doubt it.
Who could (be) __________ at the meeting? Let’s find out and call them to hear what happened.
Who could HAVE BEEN at the meeting? Let’s find out and call them to hear what happened.
It only takes three hours to fly from London to Sydney? That _____________ be correct!
It only takes three hours to fly from London to Sydney? That CAN'T be correct!
I read the book three times but I _________________ understand it.
I read the book three times but I COULDN'T understand it.
"The kids shouldn't have watched this scary movie."
Did the kids watch the movie?
Yes
No
Maybe
Yes
Kelly (Get) _________ stuck in traffic. I can't think of another reason for her to be late.
Kelly MUST HAVE GOTTEN stuck in traffic. I can't think of another reason for her to be late.
They couldn’t (see) _________ the movie. It wasn't released until today.
They couldn’t HAVE SEEN the movie. It wasn't released until today.