Share C1_class 5 (grammar)
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I’m sure they lost their way, that’s why they are still not here. (MUST)
They must have lost their way
It wasn’t necessary to lock the doors, even though you did. (NEED)
You needn’t have locked the door
It’s a pity that you didn’t listen to my advice. (TO)
You ought to have listened to my advice
I’m sure you didn’t watch “The Big Bang Theory”, you hate sitcoms like that. (CAN)
You can’t have watched “The Big Bang Theory”
Perhaps, they didn’t reach him via the phone. (MIGHT)
They might not have reached him via the phone.
I regret dropping out of school so early. (SHOULD)
I shouldn’t have dropped out of school so early
There was no necessity to contact the police, so I didn’t call them. (NEED)
I didn’t need to contact the police
We had a chance to buy an apartment, but we decided to go travelling. (COULD)
We could have bought an apartment, but we decided to go travelling
I’m sure I didn’t tell you anything offensive. (COULD)
I couldn’t have told you anything offensive
I’m sure it was love. (MUST)
It must have been love
