Using LanguageⅡppt配套教案和课堂实录

Unit 2 Cloning--Using LanguageⅡ

(listening and speaking) 一）教材分析：

本节课是人教课标版选修8 Unit2 Cloning的Using language的第二课时。本单元的主题是“克隆”。

Using language 的第二部分是一个listening and speaking练习，主题为“Is cloning cruel?”通过这部分的学习，学生对克隆有进一步的认识。于此同时，学生可以利用前面Reading和Using Language的第一课时的相关知识，自由的表达自身对于克隆的认识和想法，在相互交流的过程中形成对科学的正确态度！

二）教学目标：

1. 知识目标：复习并运用之前所学的新词、短语，如：egg, cell, resist, reasonable, bring sth back to life, approve of sth. 学习一些用于表达“同意”或“不同意”观点的句式。

2. 语言技能：学会听前预习题目并预测内容；听中注意关键词、细节和语境。

3. 语言策略：听说结合、自主学习与小组合作相结合。

4. 情感目标：学生能认识到克隆的利弊，形成对科学的正确态度。

三）教学重点：听“克隆是否残忍”的对话并完成相关练习题。

四）教学难点：小组合作，运用表达“同意”或“不同意”观点的句式进行对话交流并在课堂上展示。

五）教学过程：

Step1 Lead-in Problems we have solved: 

What is a clone? 

How is a clone produced? 

Is the return of the dinosaurs possible? 【设计说明】在lead-in部分的三个问题是学生在前面reading和Using Language的第一课时所了解过的内容。通过让学生回忆这三个问题的答案，简单地复习了之前所获取的跟克隆相关的信息并为此节课的后面内容做了一个简单的铺垫。

Step2 Pre-listening Make a revision of some useful words and phrases. Some useful words or expressions egg _________ cell __________ resist _______________ reasonable ____________________ bring sth back to life ________________ approve of sth ______________ 【设计说明】本环节让学生回顾前面课堂中学到的单词和短语。这为后面完成听力练习题做了铺垫。

Step3 While listening T：Now Xiao Qing and Rachel Brown are talking about cloning. Let’s listen to what they say. If necessary, you could take some notes of key information. Please look at task 1 and you’ll listen to this part once and now you’ll have 10 seconds to look through the requirement. Task 1 Listen to the text and try to get the main idea.

Main idea: Xiao Qing and Rachel Brown are discussing about____________________________. (Suggested answer: whether cloning is cruel to animals or not.) 【设计说明】通过Task 1的练习，让学生对听力材料有一个整体的印象，进行“泛听练习”。在这一环节，教师可进一步提问“How do you get this answer?”学生回答他们的解题思路，教师引导学生，得出一个技巧：关注听力材料的开头，把握整体。

Task 2 Choose those that you hear. □

1. Cloning will bring dead pets back to life.

□

2. There were 627 experiments before Dolly was successfully cloned. □

3. Cloning may help cure serious illnesses.

□

4. It’s a dead end.

□

5. Dolly the sheep was “middle-aged” when she was born.

□

6. Your grandmother would be able to start her life all over again and live much longer. Tips: ___________________________________________________________. (Suggested answer: 1 3 4 5) 【设计说明】通过Task 2的练习，让学生根据所听内容对句子进行判断。此题涉及了“听数字”的练习。题目中的部分句子与听力材料中的极为相似，所以整体较为简单。

Task 3 Listen to the tape and finish the chart. Rachel’s ideas about cloning

Cloning is______ to animals, live cells and eggs used in the experiments. Cloning makes animals do

_________________. Cloning is a ___________. Xiao Qing’s ideas about cloning Cloning is a ___________ job. People’s favorite pets may be

_____________________. Cloning is ____________________ that people learn to do things better. Cloning help ________________to produce ______ for illnesses. Problems in the cloning would ______________ by scientists. Cloning _________ the species. Suggested answers: Rachel’s ideas about cloning: cruel; unnatural things; dead end; weakens Xiao Qing’s ideas about cloning: wonderful; brought back to life; a new science/a way; medical science; cures; be solved 【设计说明】通过Task 3的练习，让学生对听力材料进行“精听练习”。在这一环节中，让学生对Rachel和Xiao Qing的观点内容进行填空，既可以考察单词拼写，又可以考察学生对名词复数形式、被动语态的掌握。

Step 4 Post listening ①

Students watch two videos about Rachel’s and Xiao Qing’s ideas and get a better understanding about clone. (Each video is around 1 minute.)

②

Students find and underline some useful expressions of agreements or disagreements. S1: Do you think…?

S2: What do you mean by that? S3: I don’t approve of …

S4: I suppose so. S5: I don’t quite understand…

S6: I agree with that. S7: Why not? S8: I think…/ I never think of…

S9：Don’t you think…?

【设计说明】让学生自己找出听力原文中的“agreements”和“disagreements”的句式，促进他们思考哪些是，哪些不是。这样培养了学生的观察能力，也让他们对这些句式有着更深刻的印象。

③

The teacher adds some useful expressions about agreements and disagreements. Agreements 

That’ a good/ great idea!



I agree with/ support…because…



Your argument has convinced me because…



Your idea sounds very encouraging to me. Step 5 Speaking Class Discussion: In groups of four, show idea about cloning. You can use useful expressions we mentioned above. You may start like this: A: XX, do you think cloning is _________? B: _________________________________ …

Disagreements



I can’t accept your argument because…



I would like to agree with you but…



No, I can’t agree with you…because…



I don’t care for your ideas because…



How can you believe that? 

No, that is not reasonable because…

【设计说明】小组活动，让学生在小组内交流对“克隆”的看法。小组合作培养学生合作学习的能力，同时对句型进行练习。

Step 6 Homework

Write a composition: Ideas about Cloning 【设计说明】作业设置：通过写作的形式，让学生对课堂所讨论的观点以自己的话语写下来，对课堂所学的句式进行运用以达到练习巩固的目的。

板书设计：

Blackboard

Unit 2 Cloning bring sth back to life sth be brought back to life

【设计说明】因为运用多媒体进行教学，所以板书设计简单，突出较难的主动与被动的转化。