Share Modal verbs for speculation
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It’s more than likely that he didn’t see the exit sign. (CAN'T)
He can't have seen the exist sign
It isn’t necessary to buy tickets for the match in advance. (NEED)
You don't need to buy tickets for the match in advance.
It is probable that Tom was using his mobile phone when he had the accident. (WELL)
Tom may well have been using his mobile phone when he had the accident.
It is believed that the man was speeding when the police caught him (MUST)
The man must have been speeding when the police caught him.
Perhaps they didn’t buy the electric car in the end. (Might)
They might not have bought the electric car in the end
I think you should wear your seatbelt in the back seat. (supposed)
You're supposed to wear your seatbelt in the back seat.
It is possible that she will have to complain to the school. (might)
She might have to complain to the school
It’s highly likely that Peter was having a joke. (Must / pull / leg)
Peter must have been pulling my leg
