afraid
(adjective)
afraid +of + noun/pronoun
He’s not afraid of failure.
afraid + of + -ing form
He’s not afraid of failing.
afraid + of + wh- clause
He’s not afraid of what everyone else thinks.
afraid + to + base form
He’s not afraid to ask for help.
afraid + for + noun/pronoun
He’s afraid for the children.
(=He’s worried about the children.)
afraid + clause
He was afraid he would miss the flight.
afraid + that + clause
He was afraid that he would miss the flight.