《DNA-The Story of You》Look into Science! PPT教學(xué)課件
第一部分內(nèi)容：課前自主預(yù)習(xí)
單詞闖關(guān)
1. 一般的；普遍的________→(adv.)________
2．重復(fù)；復(fù)述；背誦________
3．孫子；外孫________
4．孫女；外孫女____________
5．blueprint ________
6．instruction ________→(v.)________
7. twin ___________________
8．pattern_____________
9．identify _____________
10．related _____________
11. complex ________
短語互譯
1. 一般而言；通常________________
2．除……之外________________
3．不僅……而且……________________
4. 數(shù)以百萬計(jì)的________________
5. 例如________________
6．be related to________________
7. in the future ________________
8．the same…as________________
句型在線
1.一般而言，藍(lán)圖就是展示如何將許多不同的部分組建成一棟房子的圖紙。
________ ________， a blueprint is a drawing________
________ ________ ________ put a house together with many different parts.
2．對(duì)大自然來說，改變生物的DNA以使它們適應(yīng)它們生存的世界要花費(fèi)數(shù)百萬年的時(shí)間。
It takes millions of years for nature to change the DNA in
living things to make them fit the world ________ ________ ________．
3.所有的這些事情在你出生之前就被你的DNA強(qiáng)烈地影響著！
All these things________ ________ ________ by your DNA before you are born!
4.除了一些雙胞胎之外，每一個(gè)生物都有自己獨(dú)特的DNA。
________ ________ some twins, every living thing has its own unique DNA.
5．從你的DNA中，科學(xué)家們不僅能夠鑒別你，而且能鑒別與你相關(guān)的人。
From your DNA, scientists can identify not only you, but also
people ________ ________ ________ ________ ________.
課文初探
根據(jù)課文內(nèi)容，判斷正(T)誤(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.
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DNA-The Story of YouPPT，第二部分內(nèi)容：課堂互動(dòng)探究
詞匯點(diǎn)睛
1 general adj. 一般的；普遍的
[觀察] In general, a blueprint is a drawing that shows how to put a house together with many different parts.一般而言，藍(lán)圖就是展示如何將許多不同的部分組建成一棟房子的圖紙。
There is a general interest in sports.對(duì)于運(yùn)動(dòng)，(人們)有普遍的興趣。
[探究] general用作________詞，指普遍存在于大多數(shù)人或事物中，有“較少例外的”含義。常用短語是in general，意為“_____________”。
2 repeat v. 重復(fù)；復(fù)述；背誦
[觀察] You have your own unique DNA, but it repeats patterns from your parents' DNA.
你有你自己獨(dú)特的DNA，但是它重復(fù)了你父母DNA的模式。
The teacher asked him to repeat what she had said.
老師要求他重復(fù)她所講的話。
[探究] repeat可作及物動(dòng)詞，也可作不及物動(dòng)詞。repeat意為“重復(fù)；重說；重做”時(shí)， 其后不能再跟 again。repeat sth.＝say/do sth. ________。
句型透視
1 It takes millions of years for nature to change the DNA in living things to make them fit the world they live in.
對(duì)大自然來說，改變生物的DNA以使它們適應(yīng)它們生存的世界要花費(fèi)數(shù)百萬年的時(shí)間。
[探究] (1)句中“they live in”為定語從句，前面省略了關(guān)系詞that或which。
(2)millions of 意為“________________”。
[拓展] (1)關(guān)系代詞在定語從句中作主語時(shí)，一般不能省略；只有做賓語或表語時(shí)才可省略。
Is there anything (that) you wanted here?
這兒有你想要的東西嗎？
China is not the country (that) it was.
中國已不是過去的中國了。
(2)hundred, thousand, million, billion表示具體數(shù)字時(shí)，用單數(shù)；表示概數(shù)時(shí)，后面要加s, 并且與of連用。
2 Except for some twins, every living thing has its own unique
DNA. 除了一些雙胞胎之外，每一個(gè)生物都有自己獨(dú)特的DNA。
Everyone except Li Ming passed the English exam.
除了李明之外，大家都通過了這次英語考試。
He is a good man except for his hot temper.
他是個(gè)好人，只是脾氣暴躁而已。
We've been to the Great Wall besides Li Lei.
除了李雷之外，我們也都去過長城。
There is nothing but a bed in the room.
房間里除了一張床什么也沒有。
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關(guān)鍵詞：冀教版九年級(jí)上冊(cè)英語PPT課件免費(fèi)下載，DNA-The Story of YouPPT下載，Look into Science!PPT下載，.PPT格式；
