Just, Might/May and Can’t

Rewrite the sentences below, using must, can’t or might/may.

1. I’m sure they’ve arrived.
They must have arrived.

2. I’m sure she’s not having lunch.
She can’t be having lunch.

3. Perhaps he didn’t hear you.
He may not have heard you

4. I’m sure it hasn’t been snowing.
It can’t have been snowing

5. Perhaps he wasn’t telling the truth.
He may not have been telling the truth.

6. I’m sure you’re exhausted.
He must be exhausted.

7. May be he was delayed.
He might have been delayed

8. I’m convinced you haven’t forgotten my name.
You can’t have forgotten my name

9. I’m sure I was dreaming.
I must have been dreaming.

10. I’m sure you’re imagining things.
You must be imagining things.

11. It’s possible that they’re going away.
They might be going away

12. I’m sure they weren’t serious.
They can’t have been serious.

13. Obviously he’s been kidnapped.
He must have been kidnapped

14. Perhaps she’s going to ring.
She may be going to ring.

15. I’m sure they were informed.
They must have been informed.

Conclusions from Evidence

Draw three different conclusions from each of the following pieces of evidence.

1. There are five bottles of mils on their front door step.
a. They must have forgotten to cancel their milk deliveries before they went away.
b. They can’t have woken up yet.
c. There must be some guests staying with them.

2. There are two large suitcases in her car.
a. someone must have forgotten to take two suitcases.
b. She must have bought a new one.
c. They can’t be of herself
d. She must be going to airport

3. I saw the wheelers coming out of the American Embassy this morning.
a. They must have brought in use the wheelers.
b. They wheelers can’t have been used before.
c. They must be bringing wheelers in use. can’t be

4. His name isn’t in the phone book.
a. I must have written his name in my notebook
b. I can’t have written in my other notebook.
c. It must be in my diary.

5. Her coat’s on the floor.
a. She must have forgotten to take it.
b. She can’t have left the flat
c. She must be somewhere else here.

Giving Reasons for Deductions:

Explain the following deductions using an if sentence.

1. He can’t be a soldier-he’s not wearing a uniform.
If he was a soldier, he would be wearing a uniform.

2.There can’t be anyone at hone-the car’s gone.
If there was someone at home, the car would not have gone.

3.They must be having an argument-they’ve shut the door.
If they were not having an argument, they wouldn’t have shut the door.

4.She can’t have been enjoying herself-she left early.
If she had been enjoying herself, she would not have left early.

5.He must have been here recently-the kettle’s warm.
If he was not here if he had not been here recently, the kettle would not be warmed.

6.He can’t be working at the library- 1 haven’t seen him there.
If he was working at the library, I could not have seen him there.

7.She must know English-she was listening to the BBC.
If she didn’t know English she would not have been listening to the BBC.

8.They must have got lost-they’re not here yet.
If they had not got lost, they would be here.