worry是担心 ，afraid是害怕
1、afraid 意思是怕，害怕。它是形容词，通常与to be连用，可以广泛地用以表示害怕心理。
例如：Don't be afraid. 不要害怕。
We are not afraid of difficulties. 我们不怕困难。
That is what I was afraid of. 我所怕者就在于此。
I was afraid of hurting his feelings. 我害怕伤他的感情。
He is afraid to jump.他不敢跳。
worry的常见用法:
vi.担心;发愁
n.担心;烦恼;忧虑用
如:
Don't worry her; she is busy.别去烦她，她很忙。
The noise doesn't seem to worry them.这种嘈声好像并不影响他们。
Don't worry me with your complaints.
不要老是抱怨搞得我不太平
Don't worry if you can't finish it.你做不完也不必担心。
Your parents are worrying about you: do write to them.
你父母正担心你呢，快给他们写封信吧。
afraid和worry的区别 扩展
区别就是两者意思是不一样，具体的不同如下
afraid中文意思是adj. 害怕的；担心的；（害怕后果而）不愿意的，勉强的；遗憾的
I'm afraid Paul has gone raving mad.
worry中文意思是v. 担心，发愁；使担忧，使发愁，使焦虑；烦扰，使不安宁；（狗）追赶，撕咬（其他动物）
afraid和worry的区别 扩展
worry是一个动词 担心某人或某事我们直接用worry sb./sth.
另外有个词组be worried about也是担心的意思，但是表的是状态
afraid侧重于恐怕……更侧重于内心的一种猜测倾向
I am afraid not.恐怕不行(不是内心的担忧)
be afraid of sb./sth.担忧
be afraid to do不敢做某事
所以两者大多是结构上的用法区别
