afraid.形容词 a. [F]
1.害怕的,怕的[(+of)][+to-v][+(that)]
She was afraid that she might lose her job.
她担心会丢掉工作。
It seems that she is afraid to tell them about it.
似乎她怕将此事告诉他们。
Don't be afraid of snakes.
别怕蛇。
2.(用于提出异议,告诉不好的消息等场合,使语气婉转)恐怕,遗憾[+(that)]
I'm afraid your wife had an accident.
很遗憾,你妻子出事了。
I'm afraid I can't help you.
对不起,我不能帮你。
afraid必能作为动词使用，其词性是形容词adj
追问你说的“Don't be afraid of snakes” of之后不用加定冠词吗？