After be afraid of a gerund can be used. In this case the gerund usually expresses an action which the subject
fears may happen. It’s normally an involuntary action.
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He never swam for out. He was afraid of getting cramp.
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She avoids lonely streets. She is afraid of being mugged.
Be afraid + infinitive means that the subject is / was / will / etc too frightened to perform the action. It’s obviously a
deliberate action.
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He was afraid to jump.
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She was afraid to protest.
Be sorry for + gerund means apologise or regret.
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I’m sorry for making so much noise.
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I’m sorry for disturbing you.
