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选修8《Using LanguageⅡ》最新教案优质课下载
3. Develop the students’ sense of competition and cooperation.
Learning important and difficult points：
Discussing and expressing oneself.
Previewing case:
See the movie Jurassic Park on weekend, ahead of this period.
Are you familiar with the film? What animal do you see in the film? Are they real dinosaurs?
Why do people like this film?
Do you think there is any possibility that scientists bring extinct dinosaurs back to life as a clone ? Why (not) ?
Exploring case:
Step 1 Listening or skimming
Deal with the following task after that:
Match the main idea of each part.
Part1 explain the impossibility of cloning dinosaurs Part2 conclude that it’s just a dream
Part3 introduce the topic of the passage
What does the author think of cloning extinct animals?
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 earth
Step2 Scanning
Give some reasons why it is either impossible or unsuitable to clone extinct animals.(grasp 3 key words)
Reason 1: Perfect DNA is ___to obtain. (DNA)
Reason 2: All the cloned animals have _______arrangement of genes so that there is _____________diversity in the group to resist diseases, which means they might die of ________illness. (diversity)
Reason 3: A lack of __________ habitat. (habitat)
Make a summary: