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初中英语冀教版九年级上册Lesson 29 DNA—The Story of You多媒体教学课件ppt
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这是一份初中英语冀教版九年级上册Lesson 29 DNA—The Story of You多媒体教学课件ppt，共23页。PPT课件主要包含了Words and，原文呈现，Homework等内容，欢迎下载使用。
Yes, they d.
Beacuse they have the same DNA.
D yu knw the reasn?
Beacuse yur DNA cmes frm yur parents.
This is the shape f DNA.
What is DNA?
“DNA” is shrt fr dexyribnucleic acid. 脱氧核糖核酸 The functin f DNA is t stre genetic infrmatin.
Learning aims
1. T read and understand the passage abut DNA2. T knw mre abut DNA3. T learn sme useful wrds and expressins： general, repeat, grandsn, granddaughter, instructin, in general, expect fr, be related t, billins f…
DNA blueprint n.geberal adj.cmplex adj.twin n.repeat v.pattern n.
脱氧核糖核酸蓝图一般的；普遍的复杂的双胞胎之一重复；复述；背诵模式；形式
identify v.related adj.grandsn n.granddaughter n.instructin n.
确认；鉴别有关的；相关的孙子；外孙孙女；外孙女指示；说明
1. Where des yur DNA cme frm? Yur parents. 2. Is yur DNA in every part f yur bdy? Yes, it is.
Listen t the lessn and finish the exercise.
3. Generally speaking, a ________ is a drawing.4. ______ fr identical twins, each living thing has its wn unique DNA.
Read the lessn and answer the questins.
1．What is a blueprint?2．Which is mre cmplex, building a living thing r building a huse?3．D sme twins have the same DNA?
A blueprint is a drawing that shws hw t put a huse tgether with many different parts.
Building a living thing.
Yes, they d.
4．Is it pssible t change yur DNA?5．Whse DNA is related t yurs?
Yes. In the future, scientists might be able t change ur DNA.
Peple wh are related t me. Fr example, my parents and grandparents.
When yu build a huse, yu use a blueprint.What’s a blueprint? In general, a blueprint is a drawing that shws hw t put a huse tgether with many different parts. DNA is the blueprint f life. But building a living thing is far mre cmplex than building a huse. It takes millins f years fr nature t change the DNA in living t make them fit the wrld they live in. Hw tall are yu? What clur are yur eyes? What size are yur feet?
in general意为“一般而言,概括说来”,通常置于句首,也可以用generally speaking来表示。
different为形容词,意为“不同的”,常用于以下结构中:be different frm与……不同;be different in…在……上不同。
比较级前可以用much, even, still, far, a bit, a little, a lt 等词加以修饰。
All these things are strngly influenced by yur DNA befre yu are brn! DNA is fantastic!Except fr sme twins, every living thing has its wn unique DNA.Sme health prblems can be caused by prblems in yur DNA. Scientists can lk fr these prblems and, smetimes, help yu befre yu becme sick. In the future, scientists might be able t change yur DNA.There are cpies f yur DNA in every part f yur bdy.
1)except fr除……以外，只是，排除的不是同类，表示对主要部分的肯定和对局部的否定。Yur article is quite gd except fr several spellingmistakes. 你的文章很好，只是有几处拼写错误。 2) except “除……之外”，排除后面的人或物，而且排除的内容和主语往往是同一类。如：We went t see urteacher yesterday except Li Ming. 昨天除了李明以外我们都去看我们的老师了（李明没去）。3) besides “除……之外，还有”，包括该词后面的人或物。如：We all went t see a film besides Li Ming. 除李明以外我们也都去看电影了（李明去了）。
health为不可数名词,意为“健康”,常构成短语in gd/bad health,意为“健康/不健康”。【拓展】(1)healthy为形容词,意为“健康的”;unhealthy意为“不健康的”,keep/stay healthy意为“保持健康”。(2)healthily为副词,意为“健康地”,eat healthily意为“吃得健康”。
Fr example, yur finger has the same DNA as yur hair. Yu have yur wn unique DNA, but it repeats patterns frm yur parents’ DNA. Frm yur DNA, scientists can identify nt nly yu, but als peple wh are related t yu. Yur parents and grandparents are related t yu, and yu have their DNA! When yu have a grandsn r granddaughter, he r she will have yur DNA. Yur DNA has billins f instructins that explain why yu are the way yu are. It’s ne f the mst amazing things n the earth!
nt nly …but als…不但……而且……，连接两个相同的成分，也可连接两个分句。连接两个并列主语时，谓语动词和临近主语保持一致；连列两个并列分句时，nt nly置于句首，通常用倒装结构，也就是说，把nt nly引导的分句中的助动词或be提到主语前面。
be related t意为“和……有联系,和……有关,与……有亲戚系” related为形容词,意为“有关的,相关的”。relate为动词,意为“把……联系起来”,常与t或with搭配。
本句句末的yu are是the way的定语从句。the way的定语从句的引导词可用in which,或用that,也可以不用引导词。way在本句中意为“情况,状态”。
ne f the mst amazing things意为“最令人惊奇的事情之一”,为“ne f the+形容词的最高级+复数名词”结构。其中定冠词the也可使用形容词性的物主代词来代替。
Fill in the blanks with the phrases in the hmewrk is quite gd a few spelling mistakes. 2. the yung the ld like pp music. 3.Kate’s hair is clur her sister’s. 4. ,wmen live lnger than men. 5. many difficulties remain,we can vercme them. 6.Is wealth happiness?
Nt nly but als
the same as
in general, except fr, nt nly…but als, related t, even if, the same…as…
Cmplete the passage with the sentences in the bx.Changing DNA D yu knw DNA can be changed? Have yu ever seen a pig with a dg’s bdy? Of curse nt! Pigs and dgs can’t have babies tgether. But nw, scientists can d it. Scientists can take DNA frm ne kind f animal and put it int anther kind f animal. They can design new plants by cmbining the DNA f ther plants. ________ Sme scientists are wrried. They say we need t knw mre abut DNA befre we start changing it. But what if the plants are bad fr humans, t? A.Their DNA can’t can make plants that are bad fr can even cmbine the DNA f a plant and an animal.
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.
·D yu think it’s a gd idea t change the DNA f the fd we eat?Why r why nt?·What are sme f the psitives f genetically mdified fd?·What are sme f the negatives f genetically mdified fd?
Ⅰ.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.
Scientists
Ⅱ . 同义句转换1.Bth yu and Linda give us a big surprise. yu Linda_____ us a big surprise. 2.It takes me half an hur t clean up my rm.I half an hur up my rm. 3.My bk isn’t the same as his.My bk is his. 4.What d yu d with this prblem? d yu with this prblem? 5.He can speak Chinese.He is speak Chinese. 6.I dn’t knw hw I culd build a huse.I dn’t knw hw a huse.
Nt nly but als
spend cleaning
different frm
Hw deal
t build
1. Preview the wrds and expressins in Lessn30.2. Write a passage abut DNA, try t tell what it is, where it is frm, what things yu shw yur parents’ DNA?
Yes, they d.
Beacuse they have the same DNA.
D yu knw the reasn?
Beacuse yur DNA cmes frm yur parents.
This is the shape f DNA.
What is DNA?
“DNA” is shrt fr dexyribnucleic acid. 脱氧核糖核酸 The functin f DNA is t stre genetic infrmatin.
Learning aims
1. T read and understand the passage abut DNA2. T knw mre abut DNA3. T learn sme useful wrds and expressins： general, repeat, grandsn, granddaughter, instructin, in general, expect fr, be related t, billins f…
DNA blueprint n.geberal adj.cmplex adj.twin n.repeat v.pattern n.
脱氧核糖核酸蓝图一般的；普遍的复杂的双胞胎之一重复；复述；背诵模式；形式
identify v.related adj.grandsn n.granddaughter n.instructin n.
确认；鉴别有关的；相关的孙子；外孙孙女；外孙女指示；说明
1. Where des yur DNA cme frm? Yur parents. 2. Is yur DNA in every part f yur bdy? Yes, it is.
Listen t the lessn and finish the exercise.
3. Generally speaking, a ________ is a drawing.4. ______ fr identical twins, each living thing has its wn unique DNA.
Read the lessn and answer the questins.
1．What is a blueprint?2．Which is mre cmplex, building a living thing r building a huse?3．D sme twins have the same DNA?
A blueprint is a drawing that shws hw t put a huse tgether with many different parts.
Building a living thing.
Yes, they d.
4．Is it pssible t change yur DNA?5．Whse DNA is related t yurs?
Yes. In the future, scientists might be able t change ur DNA.
Peple wh are related t me. Fr example, my parents and grandparents.
When yu build a huse, yu use a blueprint.What’s a blueprint? In general, a blueprint is a drawing that shws hw t put a huse tgether with many different parts. DNA is the blueprint f life. But building a living thing is far mre cmplex than building a huse. It takes millins f years fr nature t change the DNA in living t make them fit the wrld they live in. Hw tall are yu? What clur are yur eyes? What size are yur feet?
in general意为“一般而言,概括说来”,通常置于句首,也可以用generally speaking来表示。
different为形容词,意为“不同的”,常用于以下结构中:be different frm与……不同;be different in…在……上不同。
比较级前可以用much, even, still, far, a bit, a little, a lt 等词加以修饰。
All these things are strngly influenced by yur DNA befre yu are brn! DNA is fantastic!Except fr sme twins, every living thing has its wn unique DNA.Sme health prblems can be caused by prblems in yur DNA. Scientists can lk fr these prblems and, smetimes, help yu befre yu becme sick. In the future, scientists might be able t change yur DNA.There are cpies f yur DNA in every part f yur bdy.
1)except fr除……以外，只是，排除的不是同类，表示对主要部分的肯定和对局部的否定。Yur article is quite gd except fr several spellingmistakes. 你的文章很好，只是有几处拼写错误。 2) except “除……之外”，排除后面的人或物，而且排除的内容和主语往往是同一类。如：We went t see urteacher yesterday except Li Ming. 昨天除了李明以外我们都去看我们的老师了（李明没去）。3) besides “除……之外，还有”，包括该词后面的人或物。如：We all went t see a film besides Li Ming. 除李明以外我们也都去看电影了（李明去了）。
health为不可数名词,意为“健康”,常构成短语in gd/bad health,意为“健康/不健康”。【拓展】(1)healthy为形容词,意为“健康的”;unhealthy意为“不健康的”,keep/stay healthy意为“保持健康”。(2)healthily为副词,意为“健康地”,eat healthily意为“吃得健康”。
Fr example, yur finger has the same DNA as yur hair. Yu have yur wn unique DNA, but it repeats patterns frm yur parents’ DNA. Frm yur DNA, scientists can identify nt nly yu, but als peple wh are related t yu. Yur parents and grandparents are related t yu, and yu have their DNA! When yu have a grandsn r granddaughter, he r she will have yur DNA. Yur DNA has billins f instructins that explain why yu are the way yu are. It’s ne f the mst amazing things n the earth!
nt nly …but als…不但……而且……，连接两个相同的成分，也可连接两个分句。连接两个并列主语时，谓语动词和临近主语保持一致；连列两个并列分句时，nt nly置于句首，通常用倒装结构，也就是说，把nt nly引导的分句中的助动词或be提到主语前面。
be related t意为“和……有联系,和……有关,与……有亲戚系” related为形容词,意为“有关的,相关的”。relate为动词,意为“把……联系起来”,常与t或with搭配。
本句句末的yu are是the way的定语从句。the way的定语从句的引导词可用in which,或用that,也可以不用引导词。way在本句中意为“情况,状态”。
ne f the mst amazing things意为“最令人惊奇的事情之一”,为“ne f the+形容词的最高级+复数名词”结构。其中定冠词the也可使用形容词性的物主代词来代替。
Fill in the blanks with the phrases in the hmewrk is quite gd a few spelling mistakes. 2. the yung the ld like pp music. 3.Kate’s hair is clur her sister’s. 4. ,wmen live lnger than men. 5. many difficulties remain,we can vercme them. 6.Is wealth happiness?
Nt nly but als
the same as
in general, except fr, nt nly…but als, related t, even if, the same…as…
Cmplete the passage with the sentences in the bx.Changing DNA D yu knw DNA can be changed? Have yu ever seen a pig with a dg’s bdy? Of curse nt! Pigs and dgs can’t have babies tgether. But nw, scientists can d it. Scientists can take DNA frm ne kind f animal and put it int anther kind f animal. They can design new plants by cmbining the DNA f ther plants. ________ Sme scientists are wrried. They say we need t knw mre abut DNA befre we start changing it. But what if the plants are bad fr humans, t? A.Their DNA can’t can make plants that are bad fr can even cmbine the DNA f a plant and an animal.
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.
·D yu think it’s a gd idea t change the DNA f the fd we eat?Why r why nt?·What are sme f the psitives f genetically mdified fd?·What are sme f the negatives f genetically mdified fd?
Ⅰ.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.
Scientists
Ⅱ . 同义句转换1.Bth yu and Linda give us a big surprise. yu Linda_____ us a big surprise. 2.It takes me half an hur t clean up my rm.I half an hur up my rm. 3.My bk isn’t the same as his.My bk is his. 4.What d yu d with this prblem? d yu with this prblem? 5.He can speak Chinese.He is speak Chinese. 6.I dn’t knw hw I culd build a huse.I dn’t knw hw a huse.
Nt nly but als
spend cleaning
different frm
Hw deal
t build
1. Preview the wrds and expressins in Lessn30.2. Write a passage abut DNA, try t tell what it is, where it is frm, what things yu shw yur parents’ DNA?
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