选修8unit2词汇

1、.,Unit2 Vocabulary,.,1. differ vi. different, difference 观察示例: In pairs, look at these pictures and discuss which ones are natural clones and which ones are man-make. Think about how they differ. 两人一组, 观察图片并讨论哪些是自然无性 繁殖, 哪些是人工的。思考它们的区别。,.,考点 differ意为“不同；相异”, 可构成短语differ from .与不同; differ in . 在方面不同。

2、 考例 Leaves are found on all kinds of trees, but they differ greatly _ size and shape. (上海2007) A. on B. from C. by D. in 点拨 differ in size and shape在大小和形状上不同。,用适当的介词填空 (1) Im sorry to differ _ you _ the matter. (2) The customs here differ _ those of the south. (3) The two girls differ _ language. (4

3、) There are many differences _ living in the city and living in the countryside.,from,on/ over,from,in,between,.,2. It is a difficult task to undertake. undertake vt. 观察示例: The procedure is difficult to undertake, of course. 当然, 这个过程很难实施。 The scientist undertakes the experiment.科学家从事这项实验。,.,I will u

4、ndertake the responsibility for the changes. 我愿意承担这些变革的责任。 The lawyer undertook a new case. 那个律师接了一个新的案子。,undertake是及物动词, 主要有以下义项: 着手做, 从事, 进行; 担任, 承担, 答应, 同意。,归纳拓展：,.,即时练习： 完成下列句子。 (1) He will _ _ _ next month (去旅行). (2) He _ _ _ _ (承担一项新任务).,undertook,task,new,a,a,undertake,journey,.,3. pay off 得到

5、好结果; 取得成功; 付清 词语联想 pay (sb) back sth 还(某人)钱/物 pay sb back for sth 因而报复/惩罚某人 pay for sth 付的钱；为付出代价 pay out 为某事而付出大笔款项,.,注意事项 pay off 当“(努力、辛苦)得到好结果；(事业、计划)成功”讲时，为不及物动词短主，用主动语态。 原文再现 You might find this hard at first but it pays off when you come to speak.,.,用pay 相关短评的适当形式完成句子 (1) Ill _ (还你钱) next mon

6、th. (2) You must _ (为付出代价) your rude words. (3) _ (他努力没有白费) when the manager accepted his proposal. (4) She _ 200 yuan _ (付的钱) Toms bike.,for,pay you back,pay for,His efforts paid off,paid,.,( ) Mom, I cant see any point in working hard at all the subjects at school. Come on, dear. Years of hard wor

7、k will surely _ in the future of your career. A. make sure B. pay off C. bring back D. pay back,B,.,4. cast down 使沮丧 观察示例: Cloning Scientists were cast down to find that Dollys illnesses were more appropriate to a much older animal. 克隆科学家沮丧地发现多莉的病更容易在年老的羊身上。,.,Dont be so cast down. Just keep up your

8、 spirits. 不要这么沮丧, 打起精神来！,归纳拓展： cast down 沮丧 cast away 丢弃 cast off 放弃；丢弃 cast out 赶走,.,即时练习： 将下列句子译成英语 (1) 听到这个消息他很沮丧。_ (2) 发现事情的真相使他很沮丧。 _,He was cast down to hear the news.,Finding out the truth made him cast down.,.,5. object v. objection n. 观察示例: On the other hand, Dollys appearance raised a stor

9、m of objections and had a great impact on the media and public imagination. 另一方面, 多莉的出现引来了巨大的反对激发了传媒的热炒和公众的想像力。,.,词义vi. 不赞成, 反对 n. 物品,目标 派生词 objection n. 不赞成, 反对 常用搭配 object to sth/doing sth 反对(做)某事,object to sb 反对某人 have/take/make an objection to (doing) sth 对表示反对 raise an objection to (doing) sth

10、对提出异议,.,即时练习: 句型转换 (1) Have you any objection to my opening the window? = Would you _ _ my opening the window?,object,to,(2) I take objection to smoking. = I _ _ smoking. (3) “But he is too young,” she argued. = She _ that he was too young.,object,to,objected,.,6. forbid vt. 观察示例 Some began to refor

11、m their legal systems and forbade research into human cloning. 一些政府开始改革他们的法律体系, 禁止对人类克隆的研究。,.,词义 vt. (to command someone not to do something) 禁止,不准 反义词 allow 允许, 准许 常用搭配 forbid sth/doing sth 禁止(做)某事 forbid sb to do sth 禁止某人做某事 forbid that 禁止 allow sth/doing sth 允许(做)某事 allow sb to do sth 允许某人做某事,.,根

12、据汉语提示完成句子。 (1) He _ (禁止吸烟) during office hours. (2) Many parents _ _ (禁止他们的孩子独自外出) at night. (3) Marriage _ (被禁止) during college time in the past.,forbids smoking,forbid their children to go out alone,was forbidden,.,7. accumulate vt. but other countries like China and the UK, continued to accumulat

13、e evidence of the abundant medical aid that cloning could provide. 有些国家比如中国和英国继续收集克隆能提供丰富的医疗帮助的证据。,.,He accumulated fortune by hard work. 他因努力工作而积蓄了一笔财富。 The purpose of education is not just accumulating information. 教育的目的不仅仅是积累知识。 vi. 积聚 Dust accumulated during my absence. 我不在期间灰尘积聚了起来。,.,归纳拓展： acc

14、umulate可作及物动词和不及物动词，表示: 收集, 聚集, 堆积。 另外 accumulation n. 积聚 如: the accumulation of knowledge 知识的积聚,.,即时练习： 完成下列句子 (1) He quickly _ _ _ (积蓄了一大笔财富). (2) Clouds began to _ _ _ _ (在天空中聚集).,large,in,accumulated,fortune,accumulate,sky,the,.,8. retire vi. 观察示例: He retired at the age of 65. 他65岁退休。 He will so

15、on retire from the army. 他不久将退役。 She retired early that night. 那天晚上她就寝得早。,.,即时练习： 完成句子 (1) He worked as a guard after _ _ _ _ (退役). (2) The troops _ _ _ _ (从战地退了回来). field n. 战地,the,army,field,retiring,from,retired,from,the,.,9. resist vt. 观察示例: Others will survive and pass on the ability to resist

16、that disease to the next generation. 其他的将存活下来并传递其后代抵抗这种病的能力。,.,词义 vt. (to remain firm against the actions, effects, or force of ) 抵制, 抵抗 派生词 resistance n. 抵抗, 反抗; 抗性; 抵抗力; 耐性 resistant adj. 抵抗的; 防的；抗的 resister n. 抵抗者 resistibility n. 可抵抗性；抵抗力,.,常用搭配 resist sh. /doing sth. 抵制某事/做某事 cant resist sth/ doing sth 禁不住某事/做某事 resist the enemy/ temptation 抵抗敌人/抵制诱惑,.,根据汉字提示完成句子 (1) We are determined to stay and _ (抵抗敌人). (2) Tom _ (忍不住开玩笑) about his strange hairstyle. (3) Quite a few people in power _ _ (抵制不住金钱的诱惑) and disobey the law.,cant resist