She would prepare her work more carefully.
She would have prepared her work more carefully.
We must call him.
We must have called him.
You may speak to them in English.
You may have spoken to them in English.
The letter would be sent air express.
The letter would have been sent air express.
They might buy a dog to protect the place.
They might have bought a dog to protect the place.
She should be put in the beginner’s class.
She should have been put in the beginner’s class.
He could study more before his exam.
He could have studied more before his exam.
You might not say such things to him.
You might not have said such things to him.
You should go to the beach with us.
You should have gone to the beach with us.
You could pay more attention to the grammar rules.
You could have paid more attention to the grammar rules.
He must tell her about it.
He must have told her about it.
You could visit Hawaii.
You could have visited Hawaii.
You may type your exercises.
You may have typed your exercises.
We should go to the beach instead of spending all day at home.
We should have gone to the beach instead of spending all day at home.
You would put some money in the bank each week.
You would have put some money in the bank each week.