Grammar

Modals (2): Certainty (present) – Must vs. Can’t

Rephrase these sentences using ‘can’t’ or ‘must’:

Example: I’m sure Nick likes you as he’s always looking at you.
➡️ Nick must like you as he’s always looking at you.

1. I’m certain they aren’t at home as there are no lights on.
2. It’s impossible you are tired as you slept for ten hours!
3. I’m sure Jack knows Leo as I saw them talking the other day.
4. It’s definitely not their dog as their dog has a black tail.
5. I bet Australia is a wonderful place to visit.

 
















Answers

1. They can’t be at home as there are no lights on.
2. You can’t be tired as you slept for ten hours!
3. Jack must know Leo as I saw them talking the other day.
4. It can’t be their dog as their dog has a black tail.
5. Australia must be a wonderful place to visit.

 

 

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