必修unitworkingtheland单词讲解课件.pptVIP

必修4unit2working-the-land单词讲解;●重点单词1．struggle vt. vi.斗争；拼搏；努力2．output n．产量；输出3．hunger n．饥饿；欲望→hungry adj.饥饿的；有欲望的4．expand vt. vi.使变大；伸展；阐述→expansion n．扩大；增加;5．circulate vt. vi.循环；流传→circulation n．循环流通6．battle n．战役；战斗；较量；斗争vt. vi.搏斗；奋斗7．therefore adv.因此；所以；因而;8．equip vt. vi.配备；装备→equipment n．设备(不可数)9．export vt. vi.输出；出口→import vt. vi.输入；入口；进口10．nationality n．国籍→nation n．国家；民族→national adj.国家的；国有的;11．occupation n．工作；职业；占领→occupy vt.占领12．confuse vt.使迷惑；使为难→confusing adj.令人迷惑的→confused adj.感到迷惑的→confusion n．迷惑13．regret vt.遗憾；后悔 n．遗憾；后悔→regretful adj.;14．chemical adj.化学的；关于化学的→chemistry n．化学→chemist n．化学家；药剂师15．bacteria n．(bacterium的复数形式)细菌16．reduce vt.减少；缩减；简化→reduction n．缩小；减少17．summary n．总结；摘要；概要→summarize vt.总结18．comment n．评论；议论 vi. vt.表达意见；作出评论;●重点短语1．thanks to幸亏；由于2．rid...of 摆脱；除去3．be satisfied with 对……感到满意4．would rather 宁愿；宁可5．build up 逐渐增强；建立；开发6．lead to 导致；造成7．focus on 集中(注意力、精力等)于;8．keep...free from/of 使……免受(影响、伤害等)；使……不含(有害物)9．make a difference 造成差异，很重要10．keep in mind 牢记在心11．cause damage to 对……造成危害12．in addition 再者，还有13．turn to 转向;struggle vt. 搏斗；斗争；努力；挣扎　n．斗争；挣扎struggle for 为争取……而斗争struggle with与……斗争struggle against与……斗争；为反对……而斗争struggle to do sth. 努力/争取……=make great efforts to do sth.struggle through 奋力通过struggle to one‘s feet 挣扎着站起来struggle on/along (虽艰难仍)继续做某事;;Dina，________for months to find a job as a waitress，finally took a position at a local advertising agency. A.struggling　　　　B．struggled C. having struggled　　D. to struggle 解析：　句意为：几个月以来，Dina一直努力想找一份女服务员的工作，最终她在当地一家广告代理处谋到了一个职位。本题考查非谓语动词作状语。设空处与句子主语为逻辑上的主谓关系，故排除B项；不定式作状语一般表示目的，故排除D项；C项相当于：Dina had struggled for months to find a job as a waitress.而A项相当于：Dina was struggling for months to find a job as a waitress.根据句意可知，C项更符合要求，故为答案。 答案：　C;expand vt.vi. 使变大；伸展；阐述expansive adj. 扩张性的；开展性的；广阔的expand into/to 使扩大，变大expand on/upon 阐述，详谈;[即学即练2](1)Metals ________ when they are heated.金属受热会膨胀。(2)Weve __________ ______ __________ by opening two