Present Modals
I have a lot of homework to do. I am not sure, but I __________ (not come) to the party tonight.
I might/may not come to the party tonight.
Change the next sentence by using COULDN'T HAVE: U.S. astronauts almost certainly didn't see the Great Wall of China from the moon.
U.S. astronauts couldn't have seen the Great Wall of China from the moon.
You look _____ my friend from high school!
You look like my friend from high school!
Something people have done for a long time in your country, sometimes on a religious holiday or the same day every year. Synonym: custom
tradition
He comes home late every night. I am sure he _______ (work) very hard.
I am sure he must work very hard.
It is possible that she was born in Australia.
She looks as though she hasn't slept for days.
Faith; an acceptance that something is true or exists
Belief
She isn't answering the phone. She definitely _______ (be) out.
She must be out.
There is a possibility Shakespeare didn't die on his birthday.
Shakespeare might/may not have died on his birthday.
Wow! Look ____ that elephant!
Wow! Look at that elephant!
Before recorded history
Prehistoric
They ________ (be) Spanish - they are speaking Chinese!
They can't be Spanish - they are speaking Chinese!
I am definitely certain it was my mom who bought the tickets for me.
My mom must have bought the tickets for me.
They look ________ water droplets, but it's actually a chemical to catch insects.
They look like water droplets, but it's actually a chemical to catch insects.
The organization of people, usually in one place
Society
There is no way he finished the exam! (It's impossible!)
He __________ (be) finished with the exam!
He can't be finished with the exam!
"I just saw the neighbors outside."
Change: There is no way you saw the neighbors outside - they're on vacation!
You can't have seen the neighbors outside - they're on vacation!
He looks ___ ____ he is going to punch someone in the face!
He looks as if / though he is going to punch someone in the face!
Religious and respected
Sacred