John will probably come to the party. John
John may come to the party.
I'm sure you forgot doing your homework.
You can't have forgotten doing your homework.
I'm sure that Susan is not the thief.
Susan can't be the thief.
I'm sure they aren't at work today.
They can't be at work today.
I had an umbrella when I came out but I haven't got it now.You (leave) ------------- it on the bus.
might have left
Perhaps he was at home yesterday.
He might have been at home.
Did you hear me come in last night? No, I (be) -----asleep.
must have been
It is impossible that he is Spanish.
He can't be Spanish.
I'm sure Jane isn't late today.
Jane can't be late today.
It is possible that you forgot your wallet at home.
You might have left your wallet at home.
Emily is crying. She --------------- be sad.
must
Perhaps he is working today.
He may be working today.
I'm sure Jane is sleeping now.
Jane must be sleeping.
Perhaps he left the car unlocked.
He might have left the car unlocked.
I'm sure the cat is in the house somewhere.
The cat must be at home.
Kate is shivering. She ------------- be cold.
must
I’m certain that she is a doctor.
She must be a doctor.
I'm sure she is at home today.
She must be at home today.