Using LanguageⅡppt专用说课稿内容

Unit 2 The Return of The Dinosaurs

Learning aims: 1 to learn some useful words and expressions and some information about cloning 2 to improve reading ability 3 learn to love science and nature 课前自主预习 重点单词

1 no longer in existence ____________ 2 a belief or feeling that sth. is true and that sth will happen although there is no proof ____________ 3 the act of controlling or directng according to rule _________ 4 happening at the beginning:first __________ 5 a disadvantage or problem that makes sth. a less attractive idea ______________ 6 fair,practical and sensible________________ 重点短语

1状况很好（坏）__________ 2 不时

偶尔____________ 3 使复活 __________ 4 使……刻骨铭心__________ 5白费力气___________ 6 最初要求_______________ Adaption is the key to survival. 适者生存。

完成句子

1 scientists are still experimenting with cloning mamals.

要点提取：experiment with/on sth. 做实验

例句仿写：有人认为在动物身上做实验会引起不必要的痛苦。

Some people feel that __________________animals causes unnecessary suffering. 2 The desadvantage is tht if there is a new illness some of these animals may die, but others will survive and pass on the ability to resist that disease to the next generation. 要点提取：the disadvantage is that…

其缺点是……

Pass on…to…

把…...转交（递给，传给……）

例句仿写：

骑自行上班的优势是我们能过低碳生活。

________________________we can live a low-carbon life.看完那本事后请传给我。

__________the book______me when you have finished it 3 based on what we know now, you cannot clone animals that have been extinct longer than 10,000 years.

要点提取：based on +what 引导宾语从句

例句仿写： ____________was shown on the survey,we can make a better understading about the thing _______we have done to nature.

课堂互动探究

Adaption is the key to survival. 适者生存。

Task 1: Group Discussin: In fact, do you think there is any possibility that scientists bring extinct dinosaurs to life as a clone ? Why (not) ? Task 2: Fast Reading 1 Match the main idea of each paragraph Para1 explain the impossibility of cloning dinosaurs Para2 conclude that it’s just a dream

Para3 introduce the topic of the passage 2 Which of the following is the author's attitude to cloning extinct animals? 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 earth Task 2: careful-reading 1 Give some reasons why it is either impossible or unsuitable to clone extinct animals. Reason 1: Perfect DNA is _______to obtain. Adaption is the key to survival. 适者生存。

Reason 2: All the cloned animals have _________ arrangement of genes so that there is _____________diversity in the group to overcome difficulties, which means they might die of _________illness. Reason 3: A lack of_______________ 2 Based on what we know now, you cannot clone animals that have been extinct longer than_______ years. 3 The chance of dinosaurs returning to the earth is merely __________. 4 Why shouldn’t you clone an extinct animal unless there is enough diversity in the group? 5 Why can’t you clone the DNA of animals that have been extinct longer than 10,000years? After-reading 1 Discussion Are you in favor of cloning extinct animals?

Now in pairs discuss which animals described below are worth restoring by means of cloning. Choose one animal from the table on p16 and use the information to help you argue why this animal should be restored to the earth. 2 write an short essay on what you have discussed.

Adaption is the key to survival. 适者生存。