冀教版九年級(jí)英語(yǔ)上冊(cè)《DNA-The Story of You》Look into Science! PPT精品課件，共27頁(yè)。
Lead-in
Look at the picture.
What you find?
The boy looks like his father.
The girl looks like her mother.
Read the first part of the passage and answer.
1. What is a blueprint?
It’s a drawing that shows how to put a house together with many different parts.
2. What is the blueprint of life?
DNA.
3. Which is more complex, building a living thing or building a house? Why?
Building a living thing is far more complex. Because it takes millions of years for nature to change the DNA in living things to make them fit the world they live in.
4. Before we are born, what can be influenced by our DNA?
Our height, the colour of our eyes, the size of our feet.
Language points
1.But building a living thing is far more complex than building a house. 但創(chuàng)造一個(gè)生物比蓋房子要復(fù)雜得多。
far用于比較級(jí)表示程度，
這樣的詞語(yǔ)還有much、still、even、no、a little、a bit、a lot、rather、any等。
The room is a bit larger than that one.
這個(gè)房間比那個(gè)稍大一點(diǎn)。
He works still harder than ever. 他比以往更加努力學(xué)習(xí)了。
Matters are a lot better than ever before. 情況遠(yuǎn)遠(yuǎn)比以前好。
Can he jump any higher? 他能跳得更高一些嗎？
Lesson One is much easier than Lesson Two.
第一課比第二課容易得多。
Tom looks even younger than before.
湯姆看上去甚至比以前還年輕。
2. Except for some twins, every living things has its own unique DNA.
除了同卵雙胞胎之外，每個(gè)生物都有自己獨(dú)特的DNA。
辨析：except、except for、besides與but
We all went to the zoo except Li Ming. 除了李明，我們都去了動(dòng)物園。
The shirt looks good except for its colour. 這件襯衫除了顏色，還不錯(cuò)。
I have two books besides this one. 除了這本，我還有兩本。（共三本）
There is nothing but a desk here. 這里除了一張桌子外什么也沒(méi)有。
3. From your DNA, scientists can identify not only you, but also people who are related to you.
從你的DNA中，科學(xué)家們不但能夠辨認(rèn)出你，而且能夠辨認(rèn)出和你有血緣關(guān)系的人。
(be) relate to/with表示“與……有關(guān)” 。
He is related to my family.他與我的家庭有關(guān)系。
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