冀教版九年级上册Unit 5 Look into ScienceLesson 29 DNA—The Story of You课前预习ppt课件

这是一份冀教版九年级上册Unit 5 Look into ScienceLesson 29 DNA—The Story of You课前预习ppt课件，共26页。PPT课件主要包含了New Words，Why，Writing，Lesson 30等内容，欢迎下载使用。

DNA blueprint general cmplex twin repeat pattern identify related grandsn granddaughter instructin
Think abut it!What d yu knw abut DNA?2. What can scientists d with DNA?
This is the shape f DNA. D yu think it’s magic?
“DNA” is shrt fr dexyribnucleic acid.
The tw girls are twins. Maybe they have the identical DNA. [identical（adj.) ---identify (v.)]
Fang Zuming lks like his father—Cheng Lng.
While-reading
Read the lessn and answer the questins：
What is a blueprint?Which is mre cmplex, building a living thing r building a huse?D sme twins have the same DNA?Is it pssible t change yur DNA?Whse DNA is related t yurs?
What is a blueprint?Which is mre cmplex, building a living thing r building a huse?D sme twins have the same DNA?
It’s a drawing that shws hw t put a huse tgether with many different parts.
Building a living thing is far mre cmplex than building a huse.
Yes, they are.
4. Is it pssible t change yur DNA?5. Whse DNA is related t yurs?
In the future, scientists might be able t change my DNA.
My parents and grandparents.
2. wn 的用法(1)adj. 自己的 （用在所有格后，加强语气） Nw ask the same questins abut yur wn teachers. She makes all her wn clthes.(2)vt. 有，拥有 Wh wns the bike?
3. except fr 除……以外，只是 He is a gd man except fr ht temper. Yur article is quite gd except fr several spelling mistakes.
4. nt nly ... but als ... 不但……而且…… 连接两个相同的成分，也可以连接两个分句。当接两个主语时，谓语动词和后面主语保持一致。 eg. He likes nt nly English but als math. Nt nly yu but als I am a teacher. 5. relate t 涉及；有关 eg. The stry related t the Secnd Wrld War. I have a bk relating t the Autumn Harvest Uprising.
Write dwn yur ideas……
Fill in each blank with the prper wrd.1. This is the __________(identify) htel that we stayed in last year.2. Yur brthers are peple _________(relate) t yu.3. D yu knw wh is the _________(wn) f the huse?4. Yur bdy uses this pattern _________ (build) itself.
5. Yu have yur wn DNA, but it repeats the patterns frm yur __________(parent) DNA. 6. Sme health prblems cme frm yur family’s DNA. _________(science) can lk fr these prblems in yur DNA.
根据汉语意思完成句子，每空一词：1. 我们用蓝图建造房子。 We _______ a blueprint ______ _______ a huse.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.
t build
except fr
the same DNA as
but als
eg. 张家口变得越来越美丽了。Zhang Jiaku is getting mre and mre beautiful.
better and better ，即比较级+and+比较级，意思是： “越来越……”。
Ⅰ. 单项选择。( )1. —Bb never des his hmewrk _____ Mary. —Yes, he makes lts f mistakes. A. s careful B. as carefully asC. carefully D. as careful as
( )2. —D yu knw this by?—Which by?—The ne _____ under the big tree. A. lay B. lain C. laying D. lying( )3. —Hw d yu knw that she likes singing?—I ften hear her _____ after class. A. t sing B. sangC. sing D. sings
( )4. They stpped _____ , but there was n mre sund. A. t listen B. t hearC. listening D. hearing( )5. My yunger brther isn’t _____ t take care f himself. A. enugh ld B. ld enughC. small enugh D. enugh small
1. The man is ____________ (bad) hurt.2. Dn’t be ____________ (scary). Yu will be OK.3. —Are yu hurt? —N, I’m nt ____________ (injure).
用所给词的适当形式填空。
完成句子。1. Dn’t wrry abut yur sn. It’s ____ ____ (没什么严重的). 2. We needn’t ____ ____ ____ (叫救护车). 3. ____ ____ (小心)！There is smething dangerus ahead.答案: 1. nthing serius 2. call an ambulance 3. Be careful
4. He ____ ____ ____ (尽力赶上)the early bus, but it was t late. 5. Dn’t wrry abut him. I can ____ ____ ____ (照顾) him. 答案: 4. tried t catch 5. take care f
1. He didn’t agree t g there with us.He __________________ there with us.2. Why dn’t yu g swimming with me?Why _____________ swimming with me?3. Grandma takes care f my sister every day. Grandma ____________ my sister every day.4. Yu dn’t have t g hme tday.Yu _______________ hme tday.
同义句转换。（每空一词）
refused t g