典型例句：That is a good book which is opened with expectation and closed with profit.
译文：那是本好书，开卷引人入胜，闭卷使人得益。
名师导学：该词属于常考词汇，考试题型以短语搭配为主，如live up to one's expectation(符合某人的期望)，beyond/out of one's expectation(出乎某人的意料)。
expense n.花费，消费;费用
历年真题：His business was very successful, but it was at the expense of his family life.
译文：他的事业很成功，但这是建立在牺牲家庭生活的基础上的。
名师导学：该词属于常考词汇，考试题型以短语搭配为主，如at the expense of(以……为代价)，at any expense(不惜代价)，其中搭配介词at是常见考点。
想一想：①expend ②expensive ③expensively
Key:①v.花费，消耗，支出 ②a.花费的，昂贵的 ③ad.昂贵地，高价地
experimental a.实验的，试验的
典型例句：The experimental farm is near the water power station.
译文：实验农场在水电站附近。
想一想：experiment experimentally
Key:①n.实验，试验 v.进行实验，做试验花费，消耗，支出 ②ad.实验上，用实验方法
expert n.专家 a.熟练的
典型例句：Experts suggest altering this negative picture by recognizing your need foremployment.
译文：专家们建议，通过正确认识你对职业的需求将有利于改变这种负面的状况。
名师导学：当表示“在某方面是专家”时，介词用at,in，on都可以。注意区分expert(专家)和export(出口)这组形近异义词。
explode v.使爆炸，爆炸;激增;发怒
典型例句：The population level in this area has exploded during the past 12 years.
译文：在过去的12年中这—地区的人口一直在剧增。
名师导学：相关短语为explode with /in anger(暴跳如雷)，explode into /with laughter(大笑起来)。
想一想：①explosion ②explosive ③explosively
Key:①n.爆发，发出，爆炸 ②a.爆炸(性)的，爆发(性)的，暴露 n.爆炸物，炸药 ③ad.爆发地，引起爆炸地
