| 行业类别 | 格式 | 大小 |
|---|---|---|
| 冀教版九年级上册英语 | pptx | 6 MB |
描述
《DNA-The Story of You》Look into Science! PPT下载
第一部分内容：This is the shape of DNA.
“DNA” is short for deoxyribonucleic acid.
The two girls are twins. Maybe they have the identical DNA.
Fang Zuming looks like his father—Cheng Long.
New Words
DNA blueprint
general complex
twin repeat
pattern identify
related grandson
granddaughter instruction
... ... ...
DNA-The Story of YouPPT，第二部分内容：Read the lesson and answer the questions.
(1)What is a blueprint?
A blueprint is a drawing that shows how to put a house together with many different parts.
(2)Which is more complex,building a living thing or building a house?
Building a living thing is far more complex than building a house.
(3)Do some twins have the same DNA?
Yes,they do.
(4)Is it possible to change your DNA?
Yes,it is.In the future,scientists might be able to change our DNA.
(5)Whose DNA is related to yours?
People who are related to me.For example,my parents and grandparents.
... ... ...
DNA-The Story of YouPPT，第三部分内容：Main phrases:
·in general
·except for
·be related to
·billions of
Main sentences:
·What can scientists do with DNA?
·But building a living thing is far more complex than building a house.
·Except for some twins,every living thing has its own unique DNA.
·Some health problems can be caused by problems in your DNA.
·In the future,scientists might be able to change your DNA.
·There are copies of your DNA in every part of your body.
·You have your own unique DNA,but it repeats patterns from your parents’ DNA.
·Your DNA has billions of instructions that explain why you are the way you are.
·It’s one of the most amazing things on the earth!
... ... ...
DNA-The Story of YouPPT，第四部分内容：教材解读
1.What can scientists do with DNA?
do with为固定短语,意为“处理”,强调对象,与疑问词what连用。
【拓展】deal with也意为“对待,处理”,侧重处理的方式、方法,与疑问词how连用。
2.In general,a blueprint is a drawing that shows how to put a house together with many different parts.
◆in general意为“一般而言,概括说来”,通常置于句首,也可以用generally speaking来表示。
◆different为形容词,意为“不同的”,常用于以下结构中:be different from与……不同;be different in…在……上不同。
3.But building a living thing is far more complex than building a house.
◆living为形容词,意为“活着的,活的”,常作定语。
◆far为副词,意为“非常,远远”,用来修饰形容词和副词的比较级,表示程度。
【拓展】同样用法的词还有even“甚至”;rather“相当”;much“……得多”;a little/bit“有点”;a lot“……得多”等等。
4.Except for some twins,every living thing has its own unique DNA.
◆except for意为“除……之外,要不是由于”,它要求排除的是不同类的。
【辨析】except for,except,besides,but
(1)except for意为“除了”,表示对主体的肯定和局部的否定,用于不同类的事物间。
(2)except可用作介词,意为“除了……之外”,表示同类事物间的排除关系。
(3)besides可用作介词,意为“除……之外”,表示同类事物间的叠加关系。
(4)but可用作介词,意为“除……之外”,常与no,all,every,each,none,nobody等词连用,有时可与except互换。
... ... ...
DNA-The Story of YouPPT，第五部分内容：Practice
Ⅰ.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?
Ⅱ.Complete the passage with the sentences in the box.
Changing DNA
Do you know DNA can be changed?Have you ever seen a pig with a dog’s body?Of course not!Pigs and dogs can’t have babies together.________But now, scientists can do it.Scientists can take DNA from one kind of animal and put it into another kind of animal. They can design new plants by combining the DNA of other plants.________Some scientists are worried.They say we need to know more about DNA before we start changing it.________But what if the plants are bad for humans,too?
A.Their DNA can’t combine.
B.We can make plants that are bad for pests.
C.They can even combine the DNA of a plant and an animal.
... ... ...
DNA-The Story of YouPPT，第六部分内容：Homework
1.Finish off the exercises in the activity book.
2.Preview Lesson 30.
关键词：冀教版九年级上册英语PPT课件免费下载，DNA-The Story of YouPPT下载，Look into Science!PPT下载，.PPT格式；
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文件信息
更新时间: 2024-09-09
所属频道：冀教版九年级上册英语
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