Modals of Deduction
We use must when we feel sure that something is true because there’s very strong evidence.
- He must be around here because his car is parked there
- You are pilot, that must be interesting
- You have worked all day, you must be tired
- He has an expensive car, he must have some money
We use might, may or could to say that we think something is possible but we’re not sure.
- I heard a noise, there might be a cat on the roof
- He might be in his bedroom
- He might be in the Gym, sometimes he goes there
We use can’t when we feel sure something is not true.
- He can’t be dead, I just talked to him on the phone
- It can’t be a mechanical problem, the car is new
- That can’t be James, James wears glasses
- My wallet can’t be in my backpack, I already checked there
Modals of Deduction Exercises
Modals of Deduction: Must, Might and Can’t
Choose Must, Might and Can't
A: Hey, what is the matter with you?
B: Well, I have to tell you something and I think you _________________ like it.
A: Come on! Tell me what it is. It _________________ be that bad.
B: I don’t know. I’m afraid you _________________ react badly.
A: Then I’m sure it _________________ be serious. Please, tell me.
B: I saw Lindsey holding hands with another man.
B: Please, I know you 10 __________________ be upset right now, but…
A: Dude, Lindsey and I broke up more than a year ago. Didn’t you know?
If you want to learn more about Grammar, consider checking these pages: