《DNA-The Story of You》Look into Science! PPT教学课件
第一部分内容：课前自主预习
单词闯关
1. 一般的；普遍的________→(adv.)________
2．重复；复述；背诵________
3．孙子；外孙________
4．孙女；外孙女____________
5．blueprint ________
6．instruction ________→(v.)________
7. twin ___________________
8．pattern_____________
9．identify _____________
10．related _____________
11. complex ________
短语互译
1. 一般而言；通常________________
2．除……之外________________
3．不仅……而且……________________
4. 数以百万计的________________
5. 例如________________
6．be related to________________
7. in the future ________________
8．the same…as________________
句型在线
1.一般而言，蓝图就是展示如何将许多不同的部分组建成一栋房子的图纸。
________ ________， a blueprint is a drawing________
________ ________ ________ put a house together with many different parts.
2．对大自然来说，改变生物的DNA以使它们适应它们生存的世界要花费数百万年的时间。
It takes millions of years for nature to change the DNA in
living things to make them fit the world ________ ________ ________．
3.所有的这些事情在你出生之前就被你的DNA强烈地影响着！
All these things________ ________ ________ by your DNA before you are born!
4.除了一些双胞胎之外，每一个生物都有自己独特的DNA。
________ ________ some twins, every living thing has its own unique DNA.
5．从你的DNA中，科学家们不仅能够鉴别你，而且能鉴别与你相关的人。
From your DNA, scientists can identify not only you, but also
people ________ ________ ________ ________ ________.
课文初探
根据课文内容，判断正(T)误(F)。
( )1. DNA is the blueprint of life.
( )2. Building a house is more complex than building a living thing.
( )3. Scientists can change our DNA now.
( )4. Your hair and your fingers have different DNA.
( )5. From your DNA, scientists can identify people who are related to you.
... ... ...
DNA-The Story of YouPPT，第二部分内容：课堂互动探究
词汇点睛
1 general adj. 一般的；普遍的
[观察] In general, a blueprint is a drawing that shows how to put a house together with many different parts.一般而言，蓝图就是展示如何将许多不同的部分组建成一栋房子的图纸。
There is a general interest in sports.对于运动，(人们)有普遍的兴趣。
[探究] general用作________词，指普遍存在于大多数人或事物中，有“较少例外的”含义。常用短语是in general，意为“_____________”。
2 repeat v. 重复；复述；背诵
[观察] You have your own unique DNA, but it repeats patterns from your parents' DNA.
你有你自己独特的DNA，但是它重复了你父母DNA的模式。
The teacher asked him to repeat what she had said.
老师要求他重复她所讲的话。
[探究] repeat可作及物动词，也可作不及物动词。repeat意为“重复；重说；重做”时， 其后不能再跟 again。repeat sth.＝say/do sth. ________。
句型透视
1 It takes millions of years for nature to change the DNA in living things to make them fit the world they live in.
对大自然来说，改变生物的DNA以使它们适应它们生存的世界要花费数百万年的时间。
[探究] (1)句中“they live in”为定语从句，前面省略了关系词that或which。
(2)millions of 意为“________________”。
[拓展] (1)关系代词在定语从句中作主语时，一般不能省略；只有做宾语或表语时才可省略。
Is there anything (that) you wanted here?
这儿有你想要的东西吗？
China is not the country (that) it was.
中国已不是过去的中国了。
(2)hundred, thousand, million, billion表示具体数字时，用单数；表示概数时，后面要加s, 并且与of连用。
2 Except for some twins, every living thing has its own unique
DNA. 除了一些双胞胎之外，每一个生物都有自己独特的DNA。
Everyone except Li Ming passed the English exam.
除了李明之外，大家都通过了这次英语考试。
He is a good man except for his hot temper.
他是个好人，只是脾气暴躁而已。
We've been to the Great Wall besides Li Lei.
除了李雷之外，我们也都去过长城。
There is nothing but a bed in the room.
房间里除了一张床什么也没有。
... ... ...
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