历年真题：Nancy is only a sort of echo of her husband's opinion and has no idea of her own.
译文：南希是这样一个人，她只是跟从她丈夫的看法，没有自己的观点。
economic a.经济的，经济学的
典型例句：Many Americans are turning to Japan, a country of high academic achievement and economic success，for possible answers.
译文：许多美国人把目光投向日本——一个取得了很大的学术成就和经济成功的国家—一来寻求答案。
名师导学：该词属于常考词汇，两个同根形容词economic和economical意思的区别，前者指“经济的”，后者指“节约的”。
想一想：①economy ②economical ③economically ④economics ⑤economist
Key:①n.经济，节约 ②a.节约的，经济的 ③ad.经济地，经济学地 ④n.经济学 ⑤n.经济学家
economical a.节约的;经济学的
典型例句：If you have a large family, it's more economical to travel by car than by train.
译文：假如你有一个大家庭，那么乘汽车旅行要比乘火车更省钱。
历年真题：Governments should also protect this resource by providing water in more economically and environmentally sound ways.(2001年6月阅读)
译文：政府可采取更经济实惠、同时也更环保的合理方式供水，以此保护资源。
economy n.经济;节约，节省
典型例句：You should learn to practice economy in making out the household budget.
译文：你应该在制定家庭预算时学会精打细算。
edge n.刀口，锋;优势;边缘v.使锋利;挤进;镶边;缓缓移动，侧着移动
典型例句：We couldn't cut out the string because the edge of the knife was not sharp enough.
译文：我们割不断绳子，因为刀锋已经不够锋利了。
名师导学：该词属于常考词汇，考试题型以短语搭配为主：如on the edge of(在……的边缘)，be edged with(有……边的)，on edge(不安)。
