be afraid of和be afraid to区别：
一、句型不同：
1、be afraid of doing/sth. 意为害怕，恐怕，担心某事物
例句：I used to be afraid of the dark.
我以前害怕黑暗。
2、be afraid to do sth. 意为不敢做……事
例句：Second, trust your ability. Don't be afraid to speak. Don't be trapped by shyness.
二、意义不同：
be afraid of doing担心出现doing的状况、结果。 doing 是客观上造成的，意为"生怕，恐怕"
例句：She was afraid of waking her husband.她生怕吵醒她丈夫（害怕吵醒时带来的后果）。
be afraid to do不敢，胆怯去做某事，是主观上的原因不去做，意为"怕"；
例句：She was afraid to wake her husband.她不敢去叫醒她丈夫（害怕去做“吵醒”这个动作）。
扩展资料：
通过例句或许更能明白be afraid of与be afraid to的区别。
be afraid of：
1.Don't be afraid of losing face.
不要怕丢面子。
2.Why should a great community like a university be afraid of nihilism?
为什么像大学这样人才济济的社区要害怕虚无主义呢？
3.There's nothing to be afraid of. The sky won't fall down.
没有什么好怕的，天不会塌下来。
be afraid to：
1.If your original request is denied, don't be afraid to pursue the matter.
如果你最初的请求遭到拒绝，不要害怕，要继续追问下去。
2.Don't be afraid to have this checked by a doctor — better safe than sorry!
不要害怕找医生检查一下——宁求稳妥以免后悔！
3.He thinks that some workers may be afraid to put questions publicly.
他认为一些工人可能害怕公开提问。