Will / Going To / May, Might, Could
He is late. Maybe he forgot about the meeting. He MIGHT NOT / COULD NOT be coming.
He might not
"Coffee or tea madam? "I'm not sure - I _______ have the coffee coconut frappuccino. It depends how many calories it has."
I might / may
He doesn't see that hole in the ground - he WILL HURT / IS GOING TO HURT himself.
he's going to hurt