翟莉莉

Differ，exact，identical，complicated，pay off，breakthrough，cast down，arbitrary，fate，object，medium，obtain，conservative，accumulate，in favour of，owe，etc.

Ability goals

Enable the students to master some English expressions and phrases and to know some knowledge of cloning.

Learning ability goals

Enable the students to express their own opinions and write a debating passage.

Teaching important points

Let students learn to give reasons and debate.

Teaching methods

Skimming method

Task-based method

Discussing method

Teaching aids

A projector，a computer and a blackboard

Teaching procedures

Step 1：Greeting

Greet the whole class.

Step 2：Warming-up and Leading-in

1.Show students a short cartoon about dinosaur.

2.Let students talk about whether it is possible for people to clone a dinosaur.

3.Lead the topic of“The return of the dinosaurs”in.

Step 3：Reading

1.Fast-reading

（1）Skim the text and match the main idea with each paragraph.

（2）Let the students find out the writer’s attitude towards cloning and learn some words about different attitudes.

A.The popularity of films such as________，in which a scientist clones several kinds of______dinosaurs，proves how the idea_______a mixture of___________.

B.Scientists are still experimenting with cloning mammals.This is because they think it can make money.（False）

2.Detailed reading

（1）Read the first paragraph.

Let the students fill in a chart and do a“True or false”question.

（2）Read the second paragraph and do the following questions：

A.The animals that have disappeared from the earth，like dinosaurs，can be brought back to life through cloning.（False）

B.The___________is that you need perfect DNA.

C.All_____of cloning an animal will be_______if there is not enough_______in the group to________________.

D.Complete the following chart

_______for its impossibility·Perfect________is needed.·There is not enough_______in the group.A（n）__________would be needed for the cloned extinct animals.

（3）Read the third paragraph and complete the following chart.

_______________________ The chance of dinosaurs returning to the earth is______________.

Step 4：Discussing

Let the students enjoy a video about cloning human and then let them discuss whether we should clone human beings...

Step 5：Writing

Let the students learn to write a short passage about whether we should try to clone humans and encourage the students to express their own ideas.

Step 6：Homework

Surf the Internet and find more knowledge about cloning.

教學反思

本節(jié)課是人教版選修8第二單元的第二篇閱讀，以“The return of the dinosaurs?”為話題展開，課型豐富，涉及讀、說、寫三個部分，是一篇Reading for discussing and writing的典型課例。下面筆者從兩個方面對這節(jié)課進行總結(jié)和反思：

這節(jié)課的成功之處是組織科學、合理而緊湊。這篇文章簡單易懂，生詞量不大；可是由它所引出的話題的討論和寫作所需要的詞匯量卻是巨大的。除了學生原本的詞料庫以外，在閱讀部分為學生做好詞匯、語料、語法等準備也十分必要。在這節(jié)課中，筆者組織學生討論，引導學生積極思考，調(diào)動學生對于爭議話題的興趣，并引導學生把觀點寫下來。這些課堂活動為接下來的寫作做了很好的鋪墊。在寫作環(huán)節(jié)，筆者巧妙地設(shè)計了角色扮演活動，即“假設(shè)你是一名小記者，總結(jié)今天的辯論”，使學生帶著榮譽感地去完成寫作部分，上下承接。

這堂課也有不足之處。一是在時長控制方面，有些活動的時間不充足，有些基礎(chǔ)薄弱的學生還未準備好就匆匆趕往下一環(huán)節(jié)。二是在reading中只引導學生搜索基本文本信息，而忽略了language的學習，如in fact，unfortunate等詞作為很有力的帶有感情色彩的轉(zhuǎn)折詞，在閱讀中并沒有帶領(lǐng)學生去仔細研讀和模仿，頗為遺憾。