新冀教版九年级英语Lesson-29-教学设计教案

1、新冀教版九年级英语Lesson-29-教学设计教案课题名Lesson29 DNA-The Story of You主备人课时1课时上课教师上课时间2015年 月 日教学目标知识目标:Words and expressions能力目标:Understand the articles about DNA.德育目标:You are unique in the world.教学重点一、重点词汇blueprint, general, complex, twins, pattern, identify, be related to, except for.二、重点句型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.教学难点定语从句.教学步骤教学过程个性化设计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 你和他们之间有什么不同吗【辨析】between与amongbetween两者之间，among一般指三者或三者以上.Jack sits between Lin Tao and Bob.I was among the crowd. 我处在人群中。 use it to build a house.你用它来建造房子。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的形容词是useful，它是由use加后缀-ful构成的。如：Is the fridge very u

7、seful 这台冰箱很有用吗 is a pattern, too. DNA也是一种模型。 too表示“也”时,通常置于句末，其前用逗号隔开。【辨析】too与either too与either都表示“也”，其区别是too用于肯定句，表示“也”；either用于否定句，表示“也不”。他们通常都位于句末，其前用逗号隔开。如：He has a sister, too. 他也有个小妹妹。He doesnt have a knife, either. 他也没有小刀。4. Except for identical twins, each living thing has its own unique DNA

8、. 除了每个双胞胎之外，每个生物都有它唯一的DNA。1)except for除以外，只是He is a good man except for hot temper. 除了脾气暴躁外，他是个好人。2)own的用法adj. 自己的（用在所有格后面，加强语气） She makes all her own clothes. 她所有的衣服都是自己做的。vt. 有；拥有 Who owns the bike 这辆自行车是谁的？【友情提示】owner n. 所有人；物主He is the owner of the house. 他是这座房子的主人。Consolidation and Summary一、用所给

9、词的适当形式填空。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