选修8unit2词汇课件.ppt

1、.Unit2 Vocabulary.1.differ vi.different,difference 观察示例观察示例:In pairs,look at these pictures and discuss which ones are natural clones and which ones are man-make.Think about how they differ.两人一组两人一组,观察图片并讨论哪些是自然无性观察图片并讨论哪些是自然无性繁殖繁殖,哪些是人工的。思考它们的哪些是人工的。思考它们的区别区别。.考点考点 differ意为意为“不同；相异不同；相异”,可构成可构成短语短语

2、differ from.与与不同不同;differ in.在在方面不同。方面不同。考例考例 Leaves are found on all kinds of trees,but they differ greatly _ size and shape.(上海上海2007)A.on B.from C.by D.in 点拨点拨 differ in size and shape在大小和形在大小和形状上不同。状上不同。用适当的介词填空用适当的介词填空(1)Im sorry to differ _ you _ the matter.(2)The customs here differ _ those o

3、f the south.(3)The two girls differ _ language.(4)There are many differences _ living in the city and living in the countryside.fromon/overfrominbetween.2.It is a difficult task to undertake.undertake vt.观察示例观察示例:The procedure is difficult to undertake,of course.当然当然,这个过程很难实施。这个过程很难实施。The scientist

4、undertakes the experiment.科学家从事这项实验。科学家从事这项实验。.I will undertake the responsibility for the changes.我愿意承担这些变革的责任。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。那个律师接了一个新的案子。undertake是及物动词是及物动词,主要有以下义项主要有以下义项:着手做着手做,从事从事,进行进行;担任担任,承担承担,答应答应,同同意。意。归纳拓展归纳拓展：.即时练习：即时练习：完成下列句子。完成下列句子。(1)He will

5、 _ _ _ next month(去旅行去旅行).(2)He _ _ _ _(承担承担一项新任务一项新任务).undertooktasknewaaundertakejourney.3.pay off 得到好结果得到好结果;取得成功取得成功;付清付清词语联想词语联想pay(sb)back sth 还还(某人某人)钱钱/物物pay sb back for sth 因因而报复而报复/惩罚某人惩罚某人pay for sth 付付的钱；为的钱；为付出代价付出代价pay out 为某事而付出大笔款项为某事而付出大笔款项.注意事项注意事项 pay off 当当“(努力、辛苦努力、辛苦)得到好结得到好结果；

6、果；(事业、计划事业、计划)成功成功”讲时，为讲时，为不及物动词短主，用主动语态。不及物动词短主，用主动语态。原文再现原文再现 You might find this hard at first but it pays off when you come to speak.用用pay 相关短评的适当形式完成句子相关短评的适当形式完成句子(1)Ill _(还你钱还你钱)next month.(2)You must _(为为付出代价付出代价)your rude words.(3)_(他努力没有白费他努力没有白费)when the manager accepted his proposal.(4)S

7、he _ 200 yuan _(付付的钱的钱)Toms bike.forpay you backpay forHis efforts paid offpaid.()Mom,I cant see any point in working hard at all the subjects at school.Come on,dear.Years of hard work will surely _ in the future of your career.A.make sure B.pay off C.bring back D.pay backB.4.cast down 使沮丧使沮丧 观察示例观察

8、示例:Cloning Scientists were cast down to find that Dollys illnesses were more appropriate to a much older animal.克隆科学家克隆科学家沮丧地沮丧地发现多莉的病更容易发现多莉的病更容易在年老的羊身上。在年老的羊身上。.Dont be so cast down.Just keep up your spirits.不要这么沮丧不要这么沮丧,打起精神来！打起精神来！归纳拓展：归纳拓展：cast down 沮丧沮丧 cast away 丢弃丢弃 cast off 放弃；丢弃放弃；丢弃 cast

9、out 赶走赶走.即时练习：即时练习：将下列句子译成英语将下列句子译成英语(1)听到这个消息他很沮丧。听到这个消息他很沮丧。_(2)发现事情的真相使他很沮丧。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.观察示例观察示例:On the other hand,Dollys appearance raised a storm of objections and had a great impact on the media

10、 and public imagination.另一方面另一方面,多莉的出现引来了巨大的反对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。激发了传媒的热炒和公众的想像力。.词义词义vi.不赞成不赞成,反对反对n.物品物品,目标目标派生词派生词 objection n.不赞成不赞成,反对反对常用搭配常用搭配 object to sth/doing sth 反对反对(做做)某事某事object to sb 反对某人反对某人have/take/make an objection to(doing)sth 对对表示反对表示反对raise an objection to(doing)sth

11、对对提出异议提出异议.即时练习即时练习:句型转换句型转换(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 toobjected.6.forbid vt.观察示例观察示例 Some began to reform the

12、ir legal systems and forbade research into human cloning.一些政府开始改革他们的法律体系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。禁止对人类克隆的研究。.词义词义 vt.(to command someone not to do something)禁止禁止,不准不准反义词反义词 allow 允许允许,准许准许常用搭配常用搭配 forbid sth/doing sth 禁止禁止(做做)某事某事 forbid sb to do sth 禁止某人做某事禁止某人做某事 forbid that 禁止禁止 allow sth/doing

13、 sth 允许允许(做做)某事某事 allow sb to do sth 允许某人做某事允许某人做某事.根据汉语提示完成句子。根据汉语提示完成句子。(1)He _(禁止吸烟禁止吸烟)during office hours.(2)Many parents _ _(禁止他们的孩子独自禁止他们的孩子独自外出外出)at night.(3)Marriage _(被禁止被禁止)during college time in the past.forbids smoking forbid their children to go out alonewas forbidden.7.accumulate vt.b

14、ut other countries like China and the UK,continued to accumulate 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。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。他因努力工作而积蓄了一笔财富。The purpose of education is not just accum

15、ulating information.教育的目的不仅仅是积累知识。教育的目的不仅仅是积累知识。vi.积聚积聚Dust accumulated during my absence.我不在期间灰尘积聚了起来。我不在期间灰尘积聚了起来。.归纳拓展：归纳拓展：accumulate可作及物动词和不及物可作及物动词和不及物动词，表示动词，表示:收集收集,聚集聚集,堆积。堆积。另外另外 accumulation n.积聚积聚 如如:the accumulation of knowledge 知识的积聚知识的积聚.即时练习：即时练习：完成下列句子完成下列句子(1)He quickly _ _ _(积蓄了一大

16、笔财富积蓄了一大笔财富).(2)Clouds began to _ _ _ _(在天空中聚集在天空中聚集).largeinaccumulatedfortuneaccumulateskythe.8.retire vi.观察示例观察示例:He retired at the age of 65.他他65岁退休。岁退休。He will soon retire from the army.他不久将退役。他不久将退役。She retired early that night.那天晚上她就寝得早。那天晚上她就寝得早。.即时练习：即时练习：完成句子完成句子(1)He worked as a guard aft

17、er _ _ _ _(退役退役).(2)The troops _ _ _ _(从从战地退了回来战地退了回来).field n.战地战地the armyfieldretiringfromretired from the.9.resist vt.观察示例观察示例:Others will survive and pass on the ability to resist that disease to the next generation.其他的将存活下来并传递其后代抵抗其他的将存活下来并传递其后代抵抗这种病的能力。这种病的能力。.词义词义 vt.(to remain firm against t

18、he actions,effects,or force of)抵制抵制,抵抗抵抗派生词派生词 resistance n.抵抗抵抗,反抗反抗;抗性抗性;抵抗力抵抗力;耐性耐性resistant adj.抵抗的抵抗的;防防的；抗的；抗的的resister n.抵抗者抵抗者resistibility n.可抵抗性；抵抗力可抵抗性；抵抗力.常用搭配常用搭配 resist sh./doing sth.抵制某事抵制某事/做某事做某事cant resist sth/doing sth 禁不住某事禁不住某事/做某事做某事resist the enemy/temptation 抵抗敌人抵抗敌人/抵制诱惑抵制诱惑

19、.根据汉字提示完成句子根据汉字提示完成句子(1)We are determined to stay and _(抵抗敌人抵抗敌人).(2)Tom _(忍不忍不住开玩笑住开玩笑)about his strange hairstyle.(3)Quite a few people in power _ _(抵制不住金抵制不住金钱的诱惑钱的诱惑)and disobey the law.cant resist the temptation of moneyresist the enemycouldnt resist playing jokes.()Although a teenager,Peter resisted _ what to do and what not to do.A.telling B.being toldC.to tell D.to be told【解析】【解析】B考查考查resist的用法。的用法。resist doing sth 抵制做某事抵制做某事,且主语且主语Peter 和和tell之间是被动关系之间是被动关系,故故B正确。正确。