综合英语 第15课.ppt

Lead-in Question Do you know anything about Dolly, the first sheep ever cloned in history? What do you know about cloning technique? Main Content 1. Text I：Dolly’s False Legacy (The text argues against the currently discussed practi-cality of applying the cloning technique to humans from technical, ethical and legal perspectives to make it clear that cloning technique must be used cautiously.) 2. Text II: Quietly, Animal Cloning Speeds Onward (The article discusses the progress and problems of cloning techniques on cloning animals and stresses that it is impossible to apply cloning to hu-mans, today at least. ) 3. Exercises: comprehension of the texts, vocabulary, grammar, translation, etc Text Analysis This text can be divided into three parts. Part I, i.e. Paragraph 1, serves as the introduc-tion of the topic of cloning and the thesis of the essay, i. e. it is impossible to apply cloning to hu-mans, today at least. Part II , i. e. Paragraphs 2-12, argues against the currently discussed practicality of applying the cloning technique to humans from technical, ethical and legal perspectives. Part III, i.e. Paragraph 13, concludes the essay by restating the thesis that cloning technique must be used cautiously. Paragraph 1 This paragraph introduces the topic of the essay, i. e. cloning, and the thesis, i. e. it is impossible to apply cloning to humans, today at least. Questions 1) What does the author think of cloning from the technical point of view? What evidence does he give to support it? He considers cloning to be a very inefficient procedure. The evidence for the point is the greater incidence of death among cloned fetuses and offspring than among their natural counter-parts. 2) What is the main point of the essay? The last sentence expresses the thesis of the essay: it is unthinkable to apply the technique to humans nowadays. Language work 1. Overlooked in the arguments ... is the fact that ... : This is an inverted sentence, and its normal order is: