Be afraid to do sth = be unwilling to do something because you are frightened about what may happen: â€˜She was afraid to eat it in case was poisonousâ€™. Donâ€™t be afraid to ask for helpâ€™.
Be afraid to doing sth = be worried or anxious about something which might happen: â€˜Most criminals are afraid of being caughtâ€™. He says that he is afraid of losing his jobâ€™.
For Scientific english editing and Medical Writing Services visitwww.manuscriptedit.com