afraid of doing与to do的区别：afraid to do表示怕而不敢去做某事所涉及的动作是可控的；afraid of doing表示害怕/当心某一结果发生，其动作是不可控的。

afraid of doing的例句：So I was afraid of doing farm work（我害怕了干农活）；afraid to do的例句：When you are afraid to do something，do it anyway（当你害怕去做某事时，还是要去做）。