冀教版九上英语 Unit 5 Look into Science.Lesson29 DNA—the story of you 课件(共15张PPT)

(共15张PPT)
What do you know about DNA
What can scientists do with DNA
DNA
blueprint 蓝图
general adj. 一般的、普遍的
repeat 重复，复述
twin 双胞胎之一
complex 复杂的
identify确 认、鉴别
instruction
指示、说明
pattern
模式
外孙、孙子
外孙女、孙女
相关的、有关的
grandson
related
granddaughter
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
Group Work
1. In general, a blueprint is a drawing that shows how to put a house together with many different parts.
in general---一般而言，概括说来 (通常置于句 首）。 也可用generally speaking来表示。
2. But building a living thing is far more complex than building a house.
比较级前可以用much, even, still, far, a bit, a little, a lot等词加 以修饰。
3. Except for some twins, every living thing has its own unique DNA.
except for 意思是“除...之外，要不是由于” 排出不同类的
except “除...之外” , 排除同类。一般不用于句首。
4. From your DNA , scientists can identify not only you, but also people who are related to you.
a. Not only…but also…不但。。而且。。
连接两个相同的成分或两个分句。当接两个主语时，谓语动词和后面的主语保持一致。Eg; Not only you but also I am a teacher.
b. Relate to 涉及，有关
Eg; The story related to the Second World War.
Write a short passage about what we learnt today. Try to tell what it is,where it is from,...
Today, we talked about_____. It's the_____of_____. It's ______.Every _____ has its own_____ DNA. Some illness can be _____by problems in your DNA. So _____ might be able to_____your DNA . You have your own DNA, but it_____ pattens from your______ DNA. From your DNA, scientists can______the people who are
_______ you. Your DNA explains why you are the way you are...
Thinking:
Is it a good idea to change the DNA of the food we eat