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初中英语冀教版九年级上册Lesson 29 DNA—The Story of You图文ppt课件
展开Lk at the picture. What yu find?
The girl lks like her mther.
The by lks like his father.
Yur DNA cmes frm yur parents.
Why d they lk the same?
This is the shape f DNA. D yu think it’s magic?
“DNA” is shrt fr dexyribnucleic acid.
granddaughter
They’re twins.
blueprintgeneralcmplextwinrepeatpattern
n. 蓝图adj. 一般的;普通的adj. 复杂的n. 双胞胎之一v. 重复; 复述; 背诵n. 模式;形式
identifyrelatedgrandsngranddaughterinstructin
v. 确认;鉴别 adj. 指示;说明n.孙子;外孙n. 孙女;外孙女n. 指示;说明
Read the title and lk at the picture in the bk.What d yu knw abut DNA?
DNA is abut yurself.It’s shape is special and magic.
Read the first part f the passage and answer.1. What is a blueprint?2. What is the blueprint f life?
It’s a drawing that shws hw t put a huse tgether with many different parts.
3. Which is mre cmplex, building a living thing r building a huse? Why?4. Befre we are brn, what can be influenced by ur DNA?
Building a living thing is far mre cmplex. Because it takes millins f years fr nature t change the DNA in living things t make them fit the wrld they live in.
Our height, the clur f ur eyes, the size f ur feet.
Read the secnd part f the passage and answer.1. D sme twins have the same DNA?2. What might the scientists help with yur health prblems in the future?
Yes, they d.
They might be able t change yur DNA befre yu get sick.
3. Where are cpies f yur DNA?4. Whse DNA is related t yurs?
In every part f ur bdies.
Peple wh are related t me. Fr example, my parents and grandparents.
Read the mind map. Then retell.
1. But building a living thing is far mre cmplex than building a huse. 但创造一个生物比盖房子要复杂得多。far用于比较级表示程度,这样的词语还有much、still、even、n、a little、a bit、a lt、rather、any等。
The rm is a bit larger than that ne. 这个房间比那个稍大一点。He wrks still harder than ever. 他比以往更加努力学习了。Matters are a lt better than ever befre. 情况远远比以前好。Can he jump any higher? 他能跳得更高一些吗?Lessn One is much easier than Lessn Tw.第一课比第二课容易得多。Tm lks even yunger than befre. 汤姆看上去甚至比以前还年轻。
2. Except fr sme twins, every living things has its wn unique DNA.除了同卵双胞胎之外,每个生物都有自己独特的DNA。辨析:except、except fr、besides与but
We all went t the z except Li Ming. 除了李明,我们都去了动物园。The shirt lks gd except fr its clur. 这件衬衫除了颜色,还不错。I have tw bks besides this ne. 除了这本,我还有两本。(共三本)There is nthing but a desk here. 这里除了一张桌子外什么也没有。
3. Frm yur DNA, scientists can identify nt nly yu, but als peple wh are related t yu. 从你的DNA中,科学家们不但能够辨认出你,而且能够辨认出和你有血缘关系的人。 (be) relate t/with表示“与……有关” 。 He is related t my family.他与我的家庭有关系。
【拓展】relate 动词,意为“把……联系起来”。 The matter relates t him. 这事与他有关。 I can’t relate what he des with what he says. 我无法把他的言行联系起来。
4. Read, find and translate.
一般而言,通常把……组装在一起……和……一样……除了不但……而且……和……有关数十亿的
in generalput … tgether …the same … as …except frnt nly… but als…be related tbillins f
Is it a gd idea t change the DNA f the fd we eat? Sme peple say ding this makes ur fd better. Others think it’s t dangerus. Search the Internet fr infrmatin and write dwn yur ideas.
完成句子, 每空一词。1. 轻工业和农业密切相关。 Light industry is clsely _________ _______ agriculture.2. 除了窗子小外, 这座房子很漂亮。 The huse is beautiful ______ _____ the small windws.3. 你的头发和皮肤有同样的DNA。 Yur hair has ______ _______ _______ _____ yur skin.4. 她不但会唱歌,而且会跳舞。 She can _____ ______ sing ______ ________ dance.
related t
except fr
the same DNA as
but als
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