1. 认识这个词（基础篇）
词：edge
英英释义：something that gives you an advantage over others
例句：Being able to speak good English is widely considered an edge in China.
2. 体会这个词 （进阶篇） “edge”作名词最基本的意思是“边缘”“刀刃”，不过它也常可以引申表示“优势”，我们可以用它来替换“advantage”。 找工作时，有一定的实习或工作经验绝对是一种优势，我们就可以说： As far as job hunting is concerned, experience is an absolute edge.
使用“edge”时，最常见的一个搭配是“A has an edge over B”，表示 A 比 B 更好。比如，许多人选择在一线二线城市生活，因为相比其它城市，大城市的文化更多元，工作机会更多。
First- and second-tier cities always have an edge over other cities in terms of cultural diversity and job opportunities.
另外，常和“edge”搭配的动词有“maintain”（保持）和“lose”（失去），比如我们想说美国的军事优势还在，不过移民优势正在减弱。我们就可以说： It seems the US is losing its immigrant edge, but it has maintained its military edge.（建议把这个句子背下来）
想表达在某人或某物在某一方面有优势，我们可以在“edge”前添加相应的形容词。比如《经济学人》在一篇讨论美国创新的文章中，就有这样一句话：
Indeed, the assumption that America is losing its innovative edge is open to question. 这句话的意思是：“的确，美国正在失去它的创新优势这个假设是可以质疑的。” 这句话的主语是“the assumption that America is losing its innovative edge”，这里的“innovative edge”就表示在创新方面的优势。
3. 从认识到会用（作业） 1）使用《牛津英语搭配词典》查“edge”，了解它的常用搭配。
competitive/slight/decisive/definite/extra edge give sb/gain/have/hold a competitive edge over keep/maintian/retain/lose
2）翻译下面的句子： 这款新的电动汽车将会优于它的竞品。The new electric car will have an edge over its rivals/competitors.
3）结合自己的生活、学习、工作、兴趣等，想象在什么语境下会用到这个表达。先简要描述这个场景，再造句。
造句： He persisted in shparpending his speaking competency , which gave him an edge in the workplace.
He has beeing reading widely since his childhood, and this habit has turned out to be an edge when it comes to writng practice in his Chinese class.
