.
You should have done something.
You must have done something.
You can have done something.
You should have told them.
You must have told them.
You needn't have told them.
He should have lied.
He ought to have lied.
He must have lied.
They needn't have gotten the memo.
They shouldn't have gotten the memo.
They can't have gotten the memo.
Would have seen their videoed presentations by now.
Will have seen their videoed presentations by now.
Must have seen their videoed presentations by now.
Amy has permission to look for a new job.
It´s possible that Amy will look for a new job.
I wasn´t allowed to swim until I was 16.
I wasn´t able to swim until I was 16.
No one is able to smoke in the theater.
No one is allowed to smoke in the theater.
My advice is that you wear glasses.
It´s possible that you will have to wear glasses.
Are you at some time in the future going to answer the phone?
I´m asking you to answer the phone.
I didn´t manage to get the top off the jar.
I wasn´t allowed to get the top off the jar.
I´m sure you are tired.
You are allowed to be tired.
Andy doesn´t have permission to go to the party.
There´s a possibility Andy won´t go to the party.
Could
Must
Might
Should
Could
Must
Would
May
Should
May
Must
Will
Shouldn't
Mustn't
Might not
Can't
Couldn't
Can't
Wouldn't
Shouldn't
Can
Might
Would
Will
Must
Might
Should
Will
Could
May
Should
Shall
Should
May
Can
Must
Mustn't
Must
Can
Can't
Must
Will
Should
Can
Mustn't
Can't
Shouldn't
Couldn't