冀教版九年級(jí)全冊(cè)Unit 5 Lesson 28教案設(shè)計(jì)

Unit5LookintoScience

Lesson28

【教學(xué)目標(biāo)】

1.記憶單詞biology,butterfly,migrate,fantastic,completely,grandchild,female,milkweed,

chemical,puzzling;短語(yǔ)growup,drawone'sattention,asmanyas...,leavefor,cutdown.

2.掌握重點(diǎn)句型：

(1)FantasticfactsaboutthebutterflyhavebeendrawingDr.Taylor'sattention.

(2)Thebutterfliesthatreturntothesoutharethegreat-greatgrandchildrenofthebutterflies

thatleftforthenorth.

3.通過(guò)本課的學(xué)習(xí)，了解蝴蝶的生活習(xí)性.

4.能夠用英語(yǔ)表達(dá)大自然的一些奧秘.

【教學(xué)內(nèi)容】

1.學(xué)會(huì)并能正確使用單詞及短語(yǔ):Biology,butterfly,migrate,fantastic,completely,

grandchild,female,milkweed,chemical,puzzling;growup,drawone'sattention,asmanyas...,leave

fbr,cutdown.

2.能夠運(yùn)用下列句型：

(1)FantasticfactsaboutthebutterflyhavebeendrawingDr.Taylor'sattention.

(2)Thebutterfliesthatreturntothesoutharethegreat-greatgrandchildrenofthebutterflies

thatleftforthenorth.

3.能夠用英語(yǔ)表達(dá)大自然的一些奧秘.

【教學(xué)重難點(diǎn)】

1.能夠正確應(yīng)用本課的重點(diǎn)詞匯biology,butterfly,migrate,fantastic,completely,grandchild,

female,milkweed,chemical,puzzling;掌握短語(yǔ)growup,drawone'sattention,asmanyas...,leave

for,cutdown.

2.激發(fā)學(xué)生興趣，向他人介紹自己所參加的保護(hù)生物的活動(dòng).

【教學(xué)思路】

思路一:主要以“生物學(xué)習(xí)”為題，通過(guò)設(shè)計(jì)幾個(gè)學(xué)生感興趣的問(wèn)題導(dǎo)入新課，調(diào)動(dòng)他們的學(xué)習(xí)

積極性.

思路二:主要以“生物學(xué)習(xí)”為題，直接導(dǎo)入與本課有關(guān)的話題，幫助學(xué)生盡快融入情景之中,

通過(guò)小組合作探究，找出本課的重點(diǎn)短語(yǔ)及重點(diǎn)句型，共同解決疑難.

【教學(xué)準(zhǔn)備】

教師在課前設(shè)計(jì)教學(xué)PPT,準(zhǔn)備錄音機(jī)和磁帶，多媒體等.

【教學(xué)過(guò)程】

1.Leadin

Leadingin情景1

T:Hello,everyone.Whatdowecallthesciencethatstudieslivingthings?

SI:Biology!

T:That'sright.Whatarelivingthings?

S2:Animals.

S3:Insects.

S4:Humans.

S5:Plants.

T:Yes.Doyouknowwhatwecallapersonwhodoesbiology?

S6:Abiologist.

T:Yes.Fantastic.

設(shè)計(jì)意圖:設(shè)計(jì)幾個(gè)學(xué)生感興趣的話題，師生互動(dòng)導(dǎo)入本課，渲染課堂氣氛，激發(fā)學(xué)生的學(xué)習(xí)

興趣.

Leadingin情景2

T:Goodmorning/afternoon,everyone.Thetitleoftoday'slessonis"TheStudyofLiving

Things'*.Whatjobdoyouwanttodoafteryougraduatefromhighschool?Wouldyouliketobea

biologist?Dr.ChipTaylorwhoisabiologistwillgiveusalecture.

Allowseveralstudentstorespond.

設(shè)計(jì)意圖:直接導(dǎo)入與本課有關(guān)的話題，幫助學(xué)生盡快融入情景之中,為下面的學(xué)習(xí)做好鋪

墊.

II.Presentation

TheteachershowsthenewwordsonPPT.Askstudentstotrytoreadthesewords.Thestudents

followtheteacherthreelimes.Thengivethestudentsfiveminutestorememberthewords.Let

studentsspellandreadthemonebyone.

設(shè)計(jì)意圖:教師以PPT的形式呈現(xiàn)本課中出現(xiàn)的生詞，領(lǐng)著學(xué)生們朗讀并記憶，為下面的課

文學(xué)習(xí)做好充分準(zhǔn)備.

III.Reading

1.Readthetextaloud.

T:Boysandgirls,it'sourreadingtime.Pleasereadafterthevideoandyoushouldpaymore

attentiontoyourpronunciation.

設(shè)計(jì)意圖:讓學(xué)生大聲朗讀課文，對(duì)課文的意思有個(gè)大致的了解，對(duì)于培養(yǎng)學(xué)生的正確發(fā)音

以及培養(yǎng)學(xué)生的語(yǔ)感都有重要作用.

2.Carefulreading.

Givethestudentsseveralminutestoreadthetextbythemselves.

ShowLet'sDoIt!

Readthelessonandcompletethetable.

Thebutterfliesalwaystothesamesmallpieceofforestandthe

Fantasticwinterthere.

factsaboutThebutterfliesthatreturntothesoutharcthegreat-greatgrandchildrenofthe

butterfliesbutterfliesthatleftforthenorth.

Thefemale'seggsononlyoneplant:milkweed.

Thingsthat

InMexico,peoplecutdownthetreesthatthebutterfliesneedto____on.

Dr.Taylor

IntheU.S.andCanada,farmersusechemicalsthatmilkweed.

worriesabout

Thingsthat

Howdothebutterfliesknowwhentoflysouth?

scientistscan't

Howdothegreat-greatgrandchildrenofthebutterfliesthesameforest?

understand

Keys:return/fly,spend,lay,rest,kill,find

設(shè)計(jì)意圖:通過(guò)細(xì)讀課文加深了學(xué)生們對(duì)課文的理解,同時(shí)也鍛煉了學(xué)生們的口語(yǔ)表達(dá)能

力.問(wèn)題更加細(xì)化，可以更深層次地挖掘文章內(nèi)容的細(xì)節(jié).

3.Readthetextandfindoutmainphrasesandsentences.

Mainphrases:

Drawone*sattention

Asmanyas...

注意：lay的過(guò)去式和過(guò)去分詞為laid,現(xiàn)在分詞為laying.

5.ButinMexico,peoplecutdownthetreesthatthebutterfliesneedtorestonbecausethey

wantmorelandforfarming.

本句中的cutdown意為"砍伐

rest在本句中意為”暫停;停止”.

6.Scientistsstilldon'tunderstandhowthebutterfliesknowwhentoflysouth.

whentoflysouth意為”什么時(shí)間飛往南方“，是“特殊疑問(wèn)詞+動(dòng)詞不定式”結(jié)構(gòu).“疑問(wèn)詞+動(dòng)

詞不定式”結(jié)構(gòu)實(shí)質(zhì)上是一個(gè)名詞性結(jié)構(gòu)，它可以改為一個(gè)賓語(yǔ)從句.此時(shí)從句與主句的主語(yǔ)是

一致的.

7.Thisisbothpuzzlingandinterestingformanyscientists.

both…and…意為”……和……”，用于連接兩個(gè)并列成分.both...and...連接兩個(gè)并列成分作主語(yǔ)

時(shí)，謂語(yǔ)動(dòng)詞使用復(fù)數(shù)形式.both...and…的同義詞組為notonly…but(also)…，意為”不僅而

且"，反義詞組為neither…nor…，意為"既不也不

8.Therearemanymysteriesyettobediscoveredbythoseinterestedinscience.

interestedinscience表示,對(duì)科學(xué)感興趣的"，作定語(yǔ)，修飾those.beinterestedin表示"對(duì)...

感興趣”.

設(shè)計(jì)意圖:學(xué)生是學(xué)習(xí)的主體，教師要努力調(diào)動(dòng)學(xué)生學(xué)習(xí)的積極性和主動(dòng)性,通過(guò)組內(nèi)合作

討論，探究，找出課文中的關(guān)鍵單詞，短語(yǔ)和句子，把所學(xué)的知識(shí)轉(zhuǎn)化為學(xué)習(xí)能力.

V.Task

1.ShowLet'sDoIt!

Workingroupsofthreetoplayagame.

Tasktips:Eachgroupshouldpreparesomepiecesofpaperanddividethemintothreecolumns.

StudentAwritesaperson'snameinthefirstcolumn,foldsthepaperandpassesittoStudentB.

StudentBwritesastatementbeginningwith"who",foldsthepaperandpassesittoStudentC.

StudentCmustfinishthesentenceandreaditoutloud.

Example:

Mr.Brown

Whoisabiologist?

Willgiveusatalk

2.Instructthestudentstoworkingroupstoplaythisgame.Followtheinstructionsinthe

student'sbook.

3.Havethestudentssharetheresultsfromtheirgamewiththeclass.

設(shè)計(jì)意圖:鍛煉學(xué)生的口語(yǔ)表達(dá)能力.

VI.Practice

1.ShowLet'sDoIt!No.2.

Jointhesentencestomakeattributiveclauses.

Example:

Wedidsomeexperimentsyesterday.Theexperimentswerefantastic.

Theexperimentsthatwedidyesterdaywerefantastic.

(1)1askedhimtomailtheletter.Iwrotethelettertomycousin.

(2)YesterdayImetaboy.Theboyisanewmemberinourartclub.

(3)Marywascarryingabag.Thebagcostheralotofmoney.

(4)Footballisateamsport.Footballispopularallovertheworld.

VII.教材解讀

1.Theexperimentsthatwedidyesterdaywerefantastic.

that引導(dǎo)定語(yǔ)從句，關(guān)系代詞that代替先行詞experiments在定語(yǔ)從句中作did的賓語(yǔ)，可省

略.此時(shí)，也可使用關(guān)系代詞which.

拓展：在下列情況下，關(guān)系代詞只能使用that而不能使用which;不定代詞作先行詞時(shí);先行

詞前有序數(shù)詞或形容詞的最高級(jí)時(shí);先行詞中既有人也有物時(shí);先行詞前有theonly,just,next等

詞修飾時(shí);當(dāng)主句是who/which開(kāi)頭的特殊疑問(wèn)句時(shí).

2.用方框中所給詞或短語(yǔ)的適當(dāng)形式填空

cutdown,fantastic,draw.attention,butterfly,complete

(1)Look!Therearemanyamongtheflowers.

(2)Ifyouthetree,youwoulddoharmtotheenvironmenthere.

(3)Theflowersare.

(4)1forgotaboutit.

(5)Thestrangerpolicemen's.

3.單項(xiàng)填空

(1)Studyingingroupsisnecessaryyouwanttodowellinschool.

A.ifB.untilC.unlessD.though

(2)LiMing'sshoesareasasZhangLei's.

A.cheapB.cheaper

C.thecheaperD.thecheapest

(3)HaveyoureadthebookisaboutLiKaifu?

A.whatB.itC./D.which

(4)MyEnglishalot.IcantalkwithmyEnglishteacherinEnglish.

A.improveB.isimproved

C.hasimprovedD.improving

(5)Thisbutterflyeggsonthemilkweed.

A.liesB.laysC.lainD.lying

(6)Ithinkthethreeexperimentswedidyesterdaywerefantastic.

A.whatB.thatC.whoD.whose

Keys:1.(1)1askedhimtomailtheletterwhich/that/不填I(lǐng)wrotetomycousin.(2)Yesterday

Imetaboywho/lhatisanewmemberinourartclub.(3)Marywascarryingabagwhich/thatcost

heralotof