1、新冀教版九年級英語Lesson-29-教學設計教案課題名Lesson29 DNA-The Story of You主備人課時1課時上課教師上課時間2015年 月 日教學目標知識目標:Words and expressions能力目標:Understand the articles about DNA.德育目標:You are unique in the world.教學重點一、重點詞匯blueprint, general, complex, twins, pattern, identify, be related to, except for.二、重點句型1. In general, a bl

2、ueprint is a drawing that shows how to put a house together with many different parts.2. It takes millions of years for nature to change the DNA in living things to make them fit the world they live in.教學難點定語從句.教學步驟教學過程個性化設計Lead-inStep .Step 2. Think about it.1. What do you know about DNA?2. What ca

3、n scientists do with DNA?Present the Learning Aims and Tasks一、Master the following words and phrases:blueprint, general, complex, twins, pattern, identify, be related to, except for.二、Master the following sentences:1. In general, a blueprint is a drawing that shows how to put a house together with m

4、any different parts.2. It takes millions of years for nature to change the DNA in living things to make them fit the world they live in.Self-learning & Group-workStep 3. Show students some pictures to let them know something about DNA and the new words in this lesson.Step 4. Read the lesson and answ

5、er the questions.1. What is a blueprint?2. Which is more complex, building a living thing or building a house?3. Do some twins have the same DNA?4. Is it possible to change your DNA?5. Whose DNA is related to yours?Presentation and Giving DirectionsStep 5. Language Points1. Are there differences bet

6、ween you and them 你和他們之間有什么不同嗎【辨析】between與amongbetween兩者之間，among一般指三者或三者以上.Jack sits between Lin Tao and Bob.I was among the crowd. 我處在人群中。 use it to build a house.你用它來建造房子。use的用法 useto do sth. 用做某事He is using a knife to cut bread. 他正用小刀切面包。【注意】 use的形容詞是useful，它是由use加后綴-ful構(gòu)成的。如：Is the fridge very u

7、seful 這臺冰箱很有用嗎 is a pattern, too. DNA也是一種模型。 too表示“也”時,通常置于句末，其前用逗號隔開?！颈嫖觥縯oo與either too與either都表示“也”，其區(qū)別是too用于肯定句，表示“也”；either用于否定句，表示“也不”。他們通常都位于句末，其前用逗號隔開。如：He has a sister, too. 他也有個小妹妹。He doesnt have a knife, either. 他也沒有小刀。4. Except for identical twins, each living thing has its own unique DNA

8、. 除了每個雙胞胎之外，每個生物都有它唯一的DNA。1)except for除以外，只是He is a good man except for hot temper. 除了脾氣暴躁外，他是個好人。2)own的用法adj. 自己的（用在所有格后面，加強語氣） She makes all her own clothes. 她所有的衣服都是自己做的。vt. 有；擁有 Who owns the bike 這輛自行車是誰的？【友情提示】owner n. 所有人；物主He is the owner of the house. 他是這座房子的主人。Consolidation and Summary一、用所給

9、詞的適當形式填空。1. This is the _(identify) hotel that we stayed in last year.2. Your brothers are people _(relate) to you.3. Do you know who is the _(own) of the house?4. Your body uses this pattern _ (build) itself.5. You have your own DNA, but it repeats the patterns from your _(parent) DNA. 6. Some health problems come from your familys (science) can look for