《2018届高三英语暑假一轮复习基础知识自测unit2cloning课件》由会员分享，可在线阅读，更多相关《2018届高三英语暑假一轮复习基础知识自测unit2cloning课件（70页珍藏版）》请在金锄头文库上搜索。
1、Unit 2 Cloning,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。考虑它们的区别。,1. differ vi.,Her method doesnt differ much from mine. 她的方法跟我的没有很大不同。 Modern airplanes differ from early ones. 现
2、代飞机跟早期的在很多方面有所不同。 I differ with him how to solve the problem. 对于如何解决问题, 我跟他的意见不一致。,They differ with each other on moral standards. 关于道德标准, 他们的见解不同。,differ是不及物动词, 主要有两个义项：“不同, 相异；不同意, 意见相左”。常见的搭配有：,1). sb. differ from/with sb. on/about sth.; 2). sth. and sth. differ in ; 3). sth. differ from sth .,2.
3、 It happens in plants when gardeners take cuttings from growing plants to make new ones, happen vi. occur by chance; take place (偶然地）发生；出现 happen to do happen to sb. It happened that happening n. 事件；偶然发生的事（常用复数）,当园艺工人割草而使之长出新的植物时，就会发生这种情况，、,碰巧,（某人）发生什么事了,碰巧,辨析：happen, occur, take place与come about 四词
4、都有“发生”之意，但有区别。 happen 是一般用语，词义较广，强调事情发生的偶 然性; occur 用法较正式，既可以指自然发生，也可以指有意安排。 take place 一般指有计划，按事先安排的进行的含义。 come about 往往注重事情发生的原因，常与how 连用。 注：以上四组词均为不及物动词，无被动语态。,Use the above words to fill the following blanks: 1) When did the explosion _ ? 2) Important elections _ this fall? 3) The concert will _
5、 next Sunday. 4) How did the quarrel _ ?,occur,take place,come about,happen,3. It also happens in animals when twins identical in sex and appearance are produced from the same original egg.,这种现象也发生在动物身上，从同一个原生卵产生性别与相貌相同的双胞胎也是克隆。 What does it stand for? it 指代上文的cloning What is the function of identic
6、al in sex and appearance? identical in sex and appearance 是一个形容词短语作后置定语。,用identical 翻译如下句子,这两种样式几乎完全相同。 These two designs are almost identical. 我的意见和他的相同。 My opinion is identical with his. 我们双方对应当怎么办的看法是一致的。 We are identical in our views of what should be done. 这是我们去年住过的那家旅馆。 This is the identical h
7、otel that we stayed in last year.,4. undertake vt. It is a difficult task to undertake. 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 can undertake 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, 主要有两个义项: 着手做, 从事,
8、 进行; 担任, 承担, 答应, 同意。,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,5. But at last the determination and patience of the scientists paid off in 1996 with a breakthrough the cloning of Dolly the sheep.,但是决心和耐心使科学家们最终于1996年收获了突破性的结果 克隆羊“多
9、莉”。,pay off 在此句中表示“是值得的；没有白费”。如：,His efforts paid off when the girl accepted his proposal. 他的努力没有白费，女孩接受了他的求婚。,另外，pay off 还有“偿清，还清”的意思。如：,Ill have paid off my debt by this time next year. 明年此时我的债就要还清了。 The men were paid off on the last day before the holiday. 工人们休假前一天拿到了工钱。,6. The nucleus of this ce
10、ll contains all the genes needed to produce a new sheep.,这个细胞得细胞核含有生产一只新的绵羊的必需的基因。,needed to produce a new sheep 为过去分词短语作后置定语，修饰其前面的名词genes, 构成动宾搭配关系。,contain v. have or hold within itself 饱含， 里面有,辨析：contain 与 include contain “包含，含有”，侧重于包含的内容或成分，“里面装有”； include “包括”，侧重范围或整体。 Eg:1) Whisky _ a large p
11、ercentage of alcohol. 2) The book _ forty maps, _ three of Great Britain.,contains,contains,including,7. The nucleus from sheep B and the egg cell from sheep A are joined using electricity.,using electricity 为现在分词短语作方式状语。 联手，携手 参加活动 和某人一起做事 参军，连起来,从绵羊B中取出得细胞核与从绵羊A中取出得卵细胞用电流使之结合。,Join hands,join in s
12、th. / doing sth,join sb. in sth.,join up,辨析：take part in, join ,join in 与 attend take part in 指参加某项活动，并以积极的态度在所参加的活动中起作用； join “加入”团体或组织； join in 指参加活动和游戏； join sb. In sth. 和某人一起做某事； attend 参加会议(听演讲、听音乐、参加婚礼）,8. Then came the disturbing news that Dolly had become seriously ill. Cloning scientists we
13、re cast down to find that Dollys illnesses were more appropriate to a much older animal. 接着传来了多莉病重的坏消息。研究克隆的科学家发现多莉得的病更容易发生在年老的羊身上，这让他们很沮丧。,本句中的news 与 that Dolly had become seriously ill 是同位语关系。 一个名词或代词后面有时可接一个单词，短语或从句，对前者作进一步的解释，说明它指的是谁或是什么，这就是同位语。,如： Mr Wang, my childs teacher, will be visiting us
14、 on Tuesday. 王先生，我孩子的老师，星期二要来看我们。 I, the oldest girl in the family, always had to care for the other children. 我，作为家里的长女，老得照料家中的其他孩子。,disturb vt. 扰乱, 使不安, 弄乱; disturbed adj. 被扰乱的, 动乱的, 不安的； disturbing adj. 令人不安的。,特别提示: 现在分词表示: 令人怎么样, 过去分词表示: 被使得怎么样, 感到怎么样。,如: an interesting story 令人感兴趣的故事 an interes
15、ted look 感到兴趣的表情 surprised people (感到)惊奇的人们,cast down 使沮丧 发现突破性克隆动物的命运使他沮丧。 He felt cast down when he discovered the fate of the breakthrough clone. 不要这么沮丧，打起精神来！ Dont be so cast down. Just keep up your spirits. cast down 有两个义项：毁掉；使沮丧，另外， cast away 丢弃，cast off 放弃；丢弃， cast out 赶走,be appropriate to 适合
16、于的; 与相称的（=be suitable for a particular person, condition, occasion or place; fitting),翻译下列句子（用appropriate) 用与你的题目相称的题材写。 Write in a style appropriate to your subject. 他的便服,不适宜在这样正式的场合穿。 His casual clothes were not appropriate for such a formal occasion.,9. altogether 总之；总共 Altogether there were 18 people in the bus. Altogether our achievements are very great. 完全地；全然 客人们并不完全满意
