课件16张PPT。 Unit 2
CloningUsing language Have you ever seen the film Jurassic Park?
science fiction movie shot in 1993 Do you think it is possible to clone dinosaurs?
If not,why?
If yes, do you think that’s good
for human beings? Why?
The return of the dinosaurs ?Structure The style: expositive styleIntroductionExplanationConclusionCould the dinosaurs return? Skimming
1.Match the main idea of each paragraphPara1 explain the impossibility of cloning
dinosaurs
Para2 conclude that it’s just a dream
Para3 introduce the topic of the passage 2.What is the writer’s attitude towards
cloning the dinosaurs?The writer of the text_____
A. is excited by the possibility of cloning fierce and extinct animals
B. believes that extinct animals can be brought back to life by cloning
C. thinks it impossible or unsuitable to clone extinct animals like dinosaurs
D. dreams of dinosaurs returning to the earthCareful readingPara1 introduce the topic of the passage1.How did the people feel about cloning dinosaurs in the film Jurassic Park?
2.Why are scientists still experimenting with cloning mammals.
It struck a mixture of fear and excitement into people's hearts.Because it is still a new science.Para 2 explain the impossibility of cloning dinosaursList out some reasons why it is either impossible or unsuitable to clone dinosaurs.Reason 1:
Reason 2:
Reason 3:DNA
Diversity
HabitatAdvantage of diversity:a new illness… some…die...,
others survive and pass on
the ability to resist…Drawback of cloning:the same arrangement
of genes…die of…Para 3 ConclusionThe chance of dinosaurs ever returning
to the earth is merely a dream.titleA dreamanswersummaryThe return of dinosaurs?summaryIt's impossible to clone an animal that
have been extinct too long, such as dinosaurs.
The return of dinosaurs?answerThe return of other animals?Auroch (1627)
Great Auk (1844)Dodo bird (1755)Quagga (1883)DiscussionThe return of other animals?long horns and hair, clothes,
decorationfriendly, eggs and meat for foodlarge, feather, clotheszebra, decoration, meatCompared with dinosaurs, they became extinct recently, so it's possible to clone them. Suppose you are scientists. Because of a tight budget, you could only clone one kind of animal. Now discuss: Which one should be restored to the earth? And why? And then present your report.
Tips:
1.Read the information(P16) about the 4 animals and find out their benefits.
2.Pick out the animal that should be restored.
3.List out the reasons why you choose it.
4.Discuss with your partner.The example(P17) on the textbook might help you.
5.Compare and present your opinions.
Speaking SampleLet’s bring the back to life
is the most suitable animal to be brought back to life/restored to the earth. Here are the reasons:
Firstly,
Secondly,
…
Finally,
So I think would be the best choice to be brought back to life/restored to the earth.Surf the net and find more about the clone of extinct animals.
2. Write a composition about whether the dinosaurs should be cloned and hand in tomorrow.
3. Mark out the language points.