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冀教版九年级上册Lesson 28 The Study of Living Things优秀ppt课件
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这是一份冀教版九年级上册Lesson 28 The Study of Living Things优秀ppt课件，共42页。PPT课件主要包含了课文呈现， return ， spend ，lay ，rest ，kill ，find ，典 例等内容，欢迎下载使用。
Lessn 28 The Study f Living Things
Curriculum wrds： Chip Taylr, bilgy, butterfly, migrate, fantastic, cmpletelyUseful expressins： Fantastic facts abut the butterfly have been drawing Dr. Taylr’s attentin.Here, as many as 230 millin butterflies spend the winter.
Functins: Master the new wrds：Chip Taylr, bilgy, butterfly, migrate, cmpletely, grandchild, female, milkweed, chemical, puzzling Grammar: almst的用法Sentences: But in Mexic, peple cut dwn the trees that the butterflies need t rest n because they want mre land fr farming.This is bth puzzling and interesting fr many scientists.
D yu like nature, why?
THINK ABOUT IT
Wuld yu like t be a bilgist when yu grw up？ Why r why nt?What mysteries f nature d yu knw abut?
Dr. Chip Taylr teaches bilgy at a university in the United States. He studies ne kind f Nrth American butterfly. Just like a migrating bird，this butterfly travels abut 4 000 kilmetres suth in fall. Fantastic facts abut the butterfly have been drawing Dr. Taylr′s attentin.
Butterflies are beautiful. What d yu knw abut them?
In Mexic，the butterflies always return t the same small piece f frest，which is nly 20 kilmetres wide. Here, as many as 230 millin butterflies spend the winter. They can cver sme trees almst cmpletely. The butterflies that return t the suth are the greatgreat grandchildren f the butterflies that left fr the nrth. When they begin t travel nrth in spring，the females lay eggs. They lay eggs n nly ne plant ： milkweed.
But in Mexic，peple cut dwn the trees that the butterflies need t rest n because they want mre land fr farming. In the United States and Canada，farmers use chemicals that kill milkweed. This wrries Dr. Taylr a lt. Nw things are imprving . Mexic has begun t prtect parts f its frests. The United States and Canada have encuraged farmers t use less chemicals.
Scientists still dn′t understand hw the butterflies knw when t fly suth. If they are even a few days late，they will freeze. And hw d all the greatgreat grandchildren find the same frest in Mexic every year? This is bth puzzling and interesting fr many scientists. There are many mysteries yet t be discvered by thse interested in science. Wuld yu like t study bilgy?
Let ′s D It !
Example： We did sme experiments yesterday. The experiments were fantastic. The experiments that we did yesterday were fantastic.
1．I asked him t mail the letter. I wrte the letter t my cusin. _____________________________________________2．Yesterday I met a by. The by is a new member in ur art club. _____________________________________________
I asked him t mail the letter that I wrte t my cusin.
Yesterday I met a by wh is a new member in ur art club.
3．Mary was carrying a bag. The bag cst her a lt f mney. _____________________________________________4．Ftball is a team sprt. Ftball is ppular all ver the wrld. ______________________________________________
Mary was carrying a bag which cst her a lt f mney.
Ftball which is ppular all ver the wrld is a team sprt.
Task tips：Each grup shuld prepare sme pieces f paper and divide them int three clumns. Student A writes a persn′s name in the first clumn，flds the paper and passes it t Student B．Student B writes a statement beginning with “wh”，flds the paper and passes it t Student C．
Student C must finish the sentence and read it ut lud.
Mr. Brwn wh is a bilgist will give us a talk
Language pint 1
Language pint 2
as many as修饰可数名词复数。 eg：There are as many as ten thusand birds in the frest. 这个森林里有多达一万只的鸟。
as…as…和……一样。中间用形容词或副词的原级。否定形式中，前面的as也可用s， 即nt s/ as…as意为“不如……”。eg：I think English is as imprtant as Chinese. 我认为英语和汉语一样重要。 Yu aren′t as/ s tall as yur brther.你没有你弟弟高。
Steve isn′t as _____ as Kelly. He ften makes mistakes in his writing. A．careless B．tidy C．careful D．difficult
【点拨】根据句意可知，Steve不如Kelly仔细，他经常在 书写方面犯错误。as…as 中间应该用形容词或副词的原级。 故选C。
Language pint 3
eg：It′s a special day t draw peple′s attentin t the envirnment. 它是个引起人们注意环境的特殊日子。
pay attentin t 注意eg：Pay attentin t yur handwriting. 注意你的书写。
Language pint 4
表示长、宽、高等用“基数词＋单位词(metre，ft，inch等)＋形容词(lng，wide，high等)”或者用“基数词＋单位词＋in＋名词(length，width，height等)”。
eg：The wall is 20 metres lng and 2 metres high. ＝ The wall is 20 metres in length and 2 metres in height. 这堵墙20米长，2米高。
Language pint 5
Language pint 6
eg：They cut dwn the big tree. 他们把这棵大树砍倒了。 Yu′d better cut the article dwn t abut 500 wrds. 你最好把这篇文章压缩到五百字左右。
Language pint 7
(1) wrry作及物动词，构成结构：wrry sb. 使某人担心。eg：I didn′t want t wrry my friend. 我不想使我的朋友担心。
(2) wrried adj. 担心的 be wrried abut sb./sth. 担心某人/某事eg：Dn′t be wrried abut me. I can lk after myself. 不用担心我。我能照顾自己。
(3) wrry作不及物动词，常构成：Dn′t wrry. “不要担心。”；wrry abut sth./sb. “担心某事/某人”。eg：Dn′t wrry. He′ll be all right. 别担心。他会平安无事的。 The child has nthing t wrry abut. 这个孩子没有什么可担心的。
Language pint 8
(1) 表示“……和……都”，是指两者兼而有之，连接两个并列成分作主语时，谓语动词要用复数形式。
(2) 表示“既不……也不”，指两者都不，连接两个并列成分作主语时，谓语动词跟最邻近的主语保持人称和数上的一致。 (3) 表示“或者……或者”或“不是……就是”的意思，是指两者中的一个，它连接两个并列成分作主语时，谓语动词跟最邻近的主语保持人称和数上的一致。
一、根据句意及汉语提示完成单词
1．D yu like ________ (生物学) at schl? 2．Lk! There are many___________ (蝴蝶) amng the flwers.
butterflies
3．This is a ________ (极好的) film.4．I ___________ (完全地) frgt abut it.5．Many peple ________ (迁移) t Canada in the 1800s.
6．Our teacher ften encurages him ________ hard. A．wrk B．wrking C．t wrk D．wrks
7．Since envirnment is t imprtant t all f us, we human beings had better ________ fewer trees. A．turned dwn B．cut dwn C．put dwn D．cut up8．Lk! My dg is ________ n the grund in the sun. A．lie B．lay C．laid D．lying
9．The pht ________ taken by my brther last week is very nice. A．which were B．that is C．that were D. which was10. The vlunteer spke as________ as she culd t make the visitrs understand her. A．clearly B．mre clearly C．mst clearly D．the mst clearly
Lessn 28 The Study f Living Things
Curriculum wrds： Chip Taylr, bilgy, butterfly, migrate, fantastic, cmpletelyUseful expressins： Fantastic facts abut the butterfly have been drawing Dr. Taylr’s attentin.Here, as many as 230 millin butterflies spend the winter.
Functins: Master the new wrds：Chip Taylr, bilgy, butterfly, migrate, cmpletely, grandchild, female, milkweed, chemical, puzzling Grammar: almst的用法Sentences: But in Mexic, peple cut dwn the trees that the butterflies need t rest n because they want mre land fr farming.This is bth puzzling and interesting fr many scientists.
D yu like nature, why?
THINK ABOUT IT
Wuld yu like t be a bilgist when yu grw up？ Why r why nt?What mysteries f nature d yu knw abut?
Dr. Chip Taylr teaches bilgy at a university in the United States. He studies ne kind f Nrth American butterfly. Just like a migrating bird，this butterfly travels abut 4 000 kilmetres suth in fall. Fantastic facts abut the butterfly have been drawing Dr. Taylr′s attentin.
Butterflies are beautiful. What d yu knw abut them?
In Mexic，the butterflies always return t the same small piece f frest，which is nly 20 kilmetres wide. Here, as many as 230 millin butterflies spend the winter. They can cver sme trees almst cmpletely. The butterflies that return t the suth are the greatgreat grandchildren f the butterflies that left fr the nrth. When they begin t travel nrth in spring，the females lay eggs. They lay eggs n nly ne plant ： milkweed.
But in Mexic，peple cut dwn the trees that the butterflies need t rest n because they want mre land fr farming. In the United States and Canada，farmers use chemicals that kill milkweed. This wrries Dr. Taylr a lt. Nw things are imprving . Mexic has begun t prtect parts f its frests. The United States and Canada have encuraged farmers t use less chemicals.
Scientists still dn′t understand hw the butterflies knw when t fly suth. If they are even a few days late，they will freeze. And hw d all the greatgreat grandchildren find the same frest in Mexic every year? This is bth puzzling and interesting fr many scientists. There are many mysteries yet t be discvered by thse interested in science. Wuld yu like t study bilgy?
Let ′s D It !
Example： We did sme experiments yesterday. The experiments were fantastic. The experiments that we did yesterday were fantastic.
1．I asked him t mail the letter. I wrte the letter t my cusin. _____________________________________________2．Yesterday I met a by. The by is a new member in ur art club. _____________________________________________
I asked him t mail the letter that I wrte t my cusin.
Yesterday I met a by wh is a new member in ur art club.
3．Mary was carrying a bag. The bag cst her a lt f mney. _____________________________________________4．Ftball is a team sprt. Ftball is ppular all ver the wrld. ______________________________________________
Mary was carrying a bag which cst her a lt f mney.
Ftball which is ppular all ver the wrld is a team sprt.
Task tips：Each grup shuld prepare sme pieces f paper and divide them int three clumns. Student A writes a persn′s name in the first clumn，flds the paper and passes it t Student B．Student B writes a statement beginning with “wh”，flds the paper and passes it t Student C．
Student C must finish the sentence and read it ut lud.
Mr. Brwn wh is a bilgist will give us a talk
Language pint 1
Language pint 2
as many as修饰可数名词复数。 eg：There are as many as ten thusand birds in the frest. 这个森林里有多达一万只的鸟。
as…as…和……一样。中间用形容词或副词的原级。否定形式中，前面的as也可用s， 即nt s/ as…as意为“不如……”。eg：I think English is as imprtant as Chinese. 我认为英语和汉语一样重要。 Yu aren′t as/ s tall as yur brther.你没有你弟弟高。
Steve isn′t as _____ as Kelly. He ften makes mistakes in his writing. A．careless B．tidy C．careful D．difficult
【点拨】根据句意可知，Steve不如Kelly仔细，他经常在 书写方面犯错误。as…as 中间应该用形容词或副词的原级。 故选C。
Language pint 3
eg：It′s a special day t draw peple′s attentin t the envirnment. 它是个引起人们注意环境的特殊日子。
pay attentin t 注意eg：Pay attentin t yur handwriting. 注意你的书写。
Language pint 4
表示长、宽、高等用“基数词＋单位词(metre，ft，inch等)＋形容词(lng，wide，high等)”或者用“基数词＋单位词＋in＋名词(length，width，height等)”。
eg：The wall is 20 metres lng and 2 metres high. ＝ The wall is 20 metres in length and 2 metres in height. 这堵墙20米长，2米高。
Language pint 5
Language pint 6
eg：They cut dwn the big tree. 他们把这棵大树砍倒了。 Yu′d better cut the article dwn t abut 500 wrds. 你最好把这篇文章压缩到五百字左右。
Language pint 7
(1) wrry作及物动词，构成结构：wrry sb. 使某人担心。eg：I didn′t want t wrry my friend. 我不想使我的朋友担心。
(2) wrried adj. 担心的 be wrried abut sb./sth. 担心某人/某事eg：Dn′t be wrried abut me. I can lk after myself. 不用担心我。我能照顾自己。
(3) wrry作不及物动词，常构成：Dn′t wrry. “不要担心。”；wrry abut sth./sb. “担心某事/某人”。eg：Dn′t wrry. He′ll be all right. 别担心。他会平安无事的。 The child has nthing t wrry abut. 这个孩子没有什么可担心的。
Language pint 8
(1) 表示“……和……都”，是指两者兼而有之，连接两个并列成分作主语时，谓语动词要用复数形式。
(2) 表示“既不……也不”，指两者都不，连接两个并列成分作主语时，谓语动词跟最邻近的主语保持人称和数上的一致。 (3) 表示“或者……或者”或“不是……就是”的意思，是指两者中的一个，它连接两个并列成分作主语时，谓语动词跟最邻近的主语保持人称和数上的一致。
一、根据句意及汉语提示完成单词
1．D yu like ________ (生物学) at schl? 2．Lk! There are many___________ (蝴蝶) amng the flwers.
butterflies
3．This is a ________ (极好的) film.4．I ___________ (完全地) frgt abut it.5．Many peple ________ (迁移) t Canada in the 1800s.
6．Our teacher ften encurages him ________ hard. A．wrk B．wrking C．t wrk D．wrks
7．Since envirnment is t imprtant t all f us, we human beings had better ________ fewer trees. A．turned dwn B．cut dwn C．put dwn D．cut up8．Lk! My dg is ________ n the grund in the sun. A．lie B．lay C．laid D．lying
9．The pht ________ taken by my brther last week is very nice. A．which were B．that is C．that were D. which was10. The vlunteer spke as________ as she culd t make the visitrs understand her. A．clearly B．mre clearly C．mst clearly D．the mst clearly
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