He's itching for a chance to show you his ability.

　　他正跃跃欲试，想向你证明他的能力。

　　itch for a chance 直译过来就是“渴望得到这个机会”的意思，这个短语的真正意思是：“跃跃欲试”。因此，当美国人说"He's itching for a chance to show you his ability."时，他要表达的意思就是："He is going to have a try to show himself."、"He tries to porve his abilities to you."。

　　情景对白

　　Benjamin: Your brother seems to be very interested in the position.

　　本杰明：你弟弟似乎对这个工作很感兴趣啊。

　　Terry: He'sitching fora chance to show you his abilities.

　　泰瑞：他正跃跃欲试，想向你证明他的能力。

　　搭配局积累：

　　① I see Terry's brother quite often.

　　我最近经常看到泰瑞的弟弟。

　　② Recently, he performes avtively in front of me.

　　最近他在我面前表现的很积极。

　　③ My nephew wishes topay you a visit.

　　我外甥希望能拜访您。

　　④ Would you please spare 10 minutes to meet my son?

　　您能抽出10分钟来见一下我儿子吗？

　　单词：

　　1.itch vt.渴望

　　itch for something.渴望得到某物。

　　I see a lot of adolescent or youngman in twenties in eager itching for success.

　　我看到许多年轻人，甚至未成年人，都想着迫不及待地获得成功。

　　2.pay somebody a visit. 拜访某人

　　Thanks for asking me, but I have to pay my father a visit in the weekend.

　　谢谢你邀请我，不过我周末没空，要拜访我父亲。