Lesson 29 DNA — The Story of Youppt专用说课稿内容

Lesson 29 DNA——The Story of You Time: 2015.9.29

Class: Class 1 Grade 9

Teacher: Li Jinxing Learning aims: 1. To listen and understand the passage about DNA. 2. To learn some key words and useful phrases. 3. To

do some practice. Key points and difficult points: 1.

To learn some useful words and phrases. 2.

Understand key sentences. Teaching method:

task-based teaching method Teaching procedures: Ⅰ. 目标导入

Use a picture of twins to lead-in. Ⅱ. 预习检测

Read the lesson and answer 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? Ⅲ. 质疑互动

1.

Listening. （1）What is influenced by DNA before you are born?

a. The colour of your eyes.

b. The colour of your cloth. （2）Except for some twins, every living thing has its own DNA.

a. True

b. False （3）From your DNA, who can be identified by scientists?

a. Your classmates.

b. Your parents. 2.

Language points.

in general

总的来说，一般而言

except for

除……之外

for example

例如

the same as

和……一样

not only…but also…

不但……而且……

be related to

与……有关

3.

Difficult sentences In general, a blueprint is a drawing that shows how to put a house together with many different parts.

But building a living thing is far more complex than building a house.

All these things are strongly influenced by your DNA before you are born.

From your DNA, scientists can identify not only you, but also people who are related to you. Ⅳ.达标纠错

A. Fill in the blanks with the phrases in the box.

in general

except for

not only…but also

related to

even if

the same…as

1. Your homework is quite good_________ a few spelling mistakes. 2. ________ the young ________ the old like pop music. 3. Kate’s hair is _________colour ___ her sister’s.

4. _________, women live longer than men. 5. ________many difficulties remain, we can overcome them. 6. Is wealth __________happiness? B. 根据汉语意思，用所学短语完成下列句子。

1. 总的来说，人们不喜欢被捉弄。

____________, people don’t like to be made fun of.

2. 除了两处拼写错误之外，这篇文章很好。

The article is good ___________ two spelling mistakes. 3. 你的想法和我的一样。

Your thought is _____________ mine. Ⅴ.收获评价

In general

except for

for example

the same as

not only…but also…

be related to Ⅵ.Homework 1.

Recite the words and phrases in Lesson 29. 2.

Complete the exercise on workbook. Ⅶ.Blackboard design Lesson 29 DNA——The Story of You

in general

except for

except

for example

the same as

not only…but also…

be related to

Ⅷ.Feedback