外研版（2019）高中英语必修第三册 Unit6 Developing ideas 词汇精讲课堂课件.pptxVIP

词汇课堂A word is a microcosm of human consciousness. — Vygotsky教材版本：新外研册别单元：必修三 Unit 6 (Developing ideas)本单元词汇梳理1.billion词源：来自法语，由 bi- (two 两个) + million 构成，本义是 million million (万亿)。后来也许是因为“万亿”这个单位太大，billion在法语中的含义从“万亿”变成了“十亿”。美国人也采用了法国人的做法，可能是因为在美国独立战争中美国人和法国人并肩和英国人作战的缘故。法国从1948年开始将 billion 的含义恢复到它的本意“万亿”，但美国依然坚持用 billion 来表示“十亿”而非“万亿”。就这样，同一个英语单词 billion，在美国和英国的含义相差了整整一千倍。随着美国文化影响力日益增大，越来越多的英国人也开始采用美国人的做法，用 billion 来表示“十亿”而非“万亿”。词块：billions of2.lap熟词生义：（跑道等的）一圈 词块：sit in / on sb’s lap3. nowhere近义词：not anywhere词块： nowhere near enough, nowhere to be found / seen4.otherwiseother + -wise (以……方式)；句子副词5.helicopter拓展plane, aeroplane, airplane, aircraft6. midnightmid (在……中) + night 词块：at midnight7.county来自count (伯爵)，伯爵管辖的土地 → 郡、县法国作家大仲马有著名作品：《基督山伯爵》 (The Count of Monte Cristo)8.threat threaten词族：threat, threaten, threatening词块：a threat to sth, threaten to do sth9.sufficient正式用语，对应 enough10.shelter一词多义：基本义“提供保护的建筑”词块：take shelter from抽象名词具体化 名词动词化：shelter … from一词多义熟词生义shelter 名词动词化property一词多义正式用语与非正式用语threat threaten话题词汇重难点词精讲otherwise句子副词otherwise adv? 以另外方式；别样 in a different way to the way mentioned; differently：Unless otherwise assigned a seat by the teacher, I always chose to sit at the back of the classroom. 2011 北京I can’t meet you on Sunday. I’ll be otherwise occupied / engaged (= doing sth else). 2014 江苏改?［句子副词］否则；不然：You’ll have to go now, otherwise you’ll miss your bus.Thanks for your directions to the house; we wouldn’t have found it otherwise. 2014 江西?［句子副词］除此以外：There was some music playing upstairs. Otherwise the house was silent. other + -wise (以……方式) threat人工智能是一种工具，而不是一种威胁。threat n? [C] [U] 威胁；恐吓：the threat of violence? [C]［常用单数］构成威胁的人 / 事物：Pollution poses a threat to the continued existence of this species. ? [U] [C]［常用单数］凶兆：There was a threat of typhoon. threaten vthreat + -en (使……)? vt 威胁；恐吓；危及到：Traffic issues not only affect our everyday life, but may also threaten people’s lives. 2015 江苏书面表达改threaten to do sth:David threatened to rep