1.害怕的，恐惧的：
Don't be afraid. 别怕。
She is afraid of dogs. 她怕狗。
She is afraid of snakes. 她怕蛇。
He was afraid of nothing. 他什么也不怕。
She was afraid of waking him. 她担心把他吵醒。
She was afraid to see you again. 她怕再次见到你。
1 was afraid to tell you. 我不敢告诉你。
They were afraid to be seen by others. 他们怕被别人看到。
He is afraid he will die. 他害怕他会死。
I was afraid I might hurt your feelings. 我担心我会伤害你的感情。
She was afraid they would recognize her. 她担心他们会认出她来。
2.担心的：
I'm afraid that he won't come. 我担心他不会来。
"Is he not coming?" "I am afraid not.(I’m afraid so.)" “他不来吗?”“看来不会(怕是这样)。”
I’m afraid l can’t stay. 恐怕我不能待了。
I’m afraid you don’t see my point. 恐怕你没听懂我的意思。
“Are we late?” “I’m afraid so. ” “我们迟到了吗?”“怕是迟到了。”
I’m afraid I must ask you to leave the country. 对不起我得让你离开这个国家。
【考点说明】
1. 通常用作表语，不用于名词前作定语。
2. 是形容词，不是动词，所以可说 Don't be afraid，不可说 Don't afraid。
3. 比较be afraid to do sth 与 be afraid of doing sth：前者表示害怕做某事或不敢做某事，后者有两个意思，一是表示害怕做某事(与be afraid to do sth 同义)，二是表示担心会发生某情况(所担心的情况不一定会发生 初中生物，此时不能与 be afraid to do sth 互换)：
I'm afraid to tell[of telling] her. 我不敢告诉她。
I was afraid of hurting her feelings. 我怕伤了她的感情。
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