Modals of Certainty
She ____ be my teacher! She´s too young.
Can´t
She _____ be stuck in traffic. She´s Never late.
might, could, may
She ____ have been on the plane when you tried to call. I´m not really sure.
Might, may , could
You ____ be joking. The best football team in the world is NOT Juventus.
Must
She ____ be sleeping. It´s pretty late.
Might, could, may
Couldn´t Can´t
She must _____ _____ tired. She would never just ignore you.
Have been
She ____ have ____ tired. She´s usually always happy.
May, might , could - been
Must - been
Have Seen
They _____ ______ _____ busy. Try calling them again.
Might may could - have- been
I ____(not) ____ been in class that day. I don´t remember this lesson.
Might - have
She _____ _____ ______ (forget) that the party was last night. She has a horrible memory.
Must have forgotten
She _____(not) ____ _____ hungry. I´m sure your cake is delicious.
May, might not - have- been
He _____(not) ____ _____(know) about the rule. Everyone makes mistakes!
Might-may have known