Modal Verbs
______ you swim when you were 10?
Could
Do you know the girl who I danced with?
object pronoun
She's seven years old, but she_______ read yet. Her parents are getting her extra lessons.
can't
Do you know the girl who danced with me?
subject pronoun
Why is that man looking around like that? He______ be lost.
must
We will stay at a hotel which is not far from the beach.
subject pronoun
Take an umbrella. It _____ rain later.
might
This is the man who Barbara visited in Scotland.
object pronoun