Unit 3 Computers核心单词1. common adj. 共同的，普遍的；常见的常用结构：in common 共有，公用(在句中多作状语）have nothing/little/a lot/something in common (with) sb.与某人没有/许多/有些共同之处in common with 和……一样common sense/knowledge 常识common welfare 公共福利易混辨析common/ordinary/usual/normalcommon 指“共有的，公共的；共同的；常见的”。反义词为 rare。common 作“普通的”讲时可与 ordinary 换用。如“普通人”也可以说成 common people。ordinary 意为“普通的，平淡无奇的”，指没有什么特别的地方。usual 意为“平常的，通常的，一向的”，含惯例之意。normal 意为“正常的”。Jane and I have nothing in common.=I have nothing in common with Jane. 我与简毫无共同之处。The problems are common to all societies. 这些问题是所有社会的通病。In common with many young people, he prefers pop songs.和许多年轻人一样，他喜欢流行歌曲。He is in ordinary clothes. 他穿着平常的衣服。We meet every day at the usual place. 我们每天在往常那个地方见面。高手过招单项填空 Harry visited the bookstore every week. He became such a customer that the bookseller gave him some books as presents. （2009·12·浙江桐庐检测）1. common B. normal C. usual D. average 解析：选 C。由“Harry visited the bookstore every week”可知，他是常客，含有“习惯，惯例”之意，故选 C。2. signaln. 信号；手势；声音；暗号v. 发信号；用信号传达；用信号与……通讯A red light is usually a signal for/of danger.红灯通常是危险的信号。He signaled (to) the waiter to bring the menu.他示意服务员把菜单拿过来。常用结构：用心 爱心 专心1signal to sb./sth. for sth. 用信号传达（某信息）；用信号与（某人）通讯signal with ...用……发信号高手过招翻译句子① 铁路的红信号灯亮了，所以火车停下了。② 他用红旗传达信号。答案：① The railway signal was on red, so the train stopped.②He was signalling with a red flag.3. sumn. 金额; 款项; 总数; 算术题常用结构：in sum 简言之; 总而言之sum up/sum sth. U...
