Unit 1 The Changing World Topic 2 Section B 公開課教學(xué)設(shè)計(jì)（九年級英語上冊仁愛版）

Unit1TheChangingWorldTopic2Thepopulationindevelopingcountriesisgrowingfaster.SectionB教學(xué)設(shè)計(jì)一、教學(xué)目標(biāo)1.能根據(jù)已學(xué)語音、音標(biāo)及發(fā)音規(guī)則，正確朗讀下列詞匯并在實(shí)際的對話操練中加以應(yīng)用：population,billion,increase,reach,Russia,luckily,policy,measure2.能夠進(jìn)一步掌握形容詞比較級的用法，數(shù)字的表達(dá)。3.能夠聽懂有關(guān)人口話題的討論以及較大數(shù)字的表達(dá)，并能作出正確匹配。4.能夠用正確的表達(dá)方式討論人口問題。5.增強(qiáng)對人口問題的認(rèn)識(shí)，了解各國的人口現(xiàn)狀。6.通過對比發(fā)達(dá)國家和發(fā)展中國家的人口增長情況，樹立正確的人口觀念。二、教學(xué)重點(diǎn)及難點(diǎn)重點(diǎn)：1.能根據(jù)已學(xué)語音、音標(biāo)及發(fā)音規(guī)則，正確朗讀下列詞匯并在實(shí)際的對話操練中加以應(yīng)用：population,billion,increase,reach,Russia,luckily,policy,measure2.能夠聽懂有關(guān)人口話題的討論，并能作出正確匹配。難點(diǎn)：1.能更快更好地聽懂和朗讀較大數(shù)字。2.能正確使用數(shù)字表達(dá)各國的人口現(xiàn)狀。三、教學(xué)準(zhǔn)備教師：教學(xué)課件；單詞卡片（population,billion等）；世界人口示意圖；多媒體設(shè)備學(xué)生：課前預(yù)習(xí)四、教學(xué)過程Step1Warming-upAfterashortgreeting,presenttheinformationaboutpopulationindifferentcountries.【設(shè)計(jì)意圖】通過讓學(xué)生分享搜集到的人口信息，培養(yǎng)學(xué)生整理信息、傳達(dá)信息的能力。Step2Pre-listening1.Presentthenewwords.T:That’sright.Chinahasapopulationof1.37billion.Butitisincreasingbyabout90millioneveryyear.Whatalargepopulation!Luckily,Chinahascarriedoutsomepoliciestosolveit.(Eveniftwo-childpolicyjustallowscoupleswhohaveonlyonechildintheirfamiliestohaveasecondchild).DoyouknowwhatthepopulationoftheUSAis?Ss:321million.T:Yes,thepopulationindevelopingcountriesislargerthanthatindevelopedcountries.【設(shè)計(jì)意圖】引導(dǎo)學(xué)生理解并掌握新詞，為聽力活動(dòng)做好準(zhǔn)備。2.TeachSshowtoreadlargenumbers.AndthengetSstoreadsomenumbers.Askthemtopayspecialattentiontotheintonation.T:Chinahasapopulationof1.37billion.Butdoyouknowhowtoexpressthelargenumberslike1,370,000,000.First,trytoseparatethenumberingroupsofthreefromrighttoleft.Thenreaditinorderfrombilliontomillionandthousand.So,wecanreadthislargenumber…(LeadSstoreadnumbersfromthesimplenumberstolargeoneslikemillionandbillion.)T:Nowyoucanhaveatrytoreadthesenumbersbyyourselves.【設(shè)計(jì)意圖】循序漸進(jìn)，由簡到難，利于學(xué)生逐步掌握較大數(shù)字的正確讀法。3.ListentoPart2andfollow.Thenreadtheothernumbers.T:Nowlistenandfollowandpaymuchattentiontotheintonation.【設(shè)計(jì)意圖】感知語音，熟練掌握較大數(shù)字的正確讀法。Step3While-listeningListento1aandmatchtheinformation.T:Therearesomanypeopleintheworld.Right?What’sthepopulationoftheworld?T:Maybesomeofushavelearntaboutit.OK,let’slistentotherecordingandfinish1b.T:It’snotdifficult.Nowshareyouranswerswithothers.【設(shè)計(jì)意圖】培養(yǎng)學(xué)生的語感，能更好地運(yùn)用短語和句子。Step4Post-listening1.Makesimilarconversationsaftertheexample.A:What’sthepopulationoftheworld?B:It’sabout7.2billion.【設(shè)計(jì)意圖】有利于及時(shí)鞏固所學(xué)句型。2.GetSstorole-play1aandpayattentiontothepronunciationandintonation.【設(shè)計(jì)意圖】感知語音語調(diào)，提升學(xué)生的朗讀技巧和語言表達(dá)能力。3.Underlinetheusefulexpressionsin1aanddiscusstheusageofthemingroups.T:Readtheconversationagainandunderlinethedifficultphrasesandsentences.Youcanlookuptheminthedictionaryoraskyourclassmatesandteacherforhelp.(1)haveapopulationof有……人口increaseby增長了……increaseto增長到……What’sthepopulationof…?……的人口是多少？Soitis.確實(shí)如此。Soisit.它也是這樣。carryout貫徹；執(zhí)行theone-childpolicy獨(dú)生子女政策(2)population①thepopulationof表示……的人口數(shù)，謂語動(dòng)詞用單數(shù)。e.g.Thepopulationofthiscityisnearly300,000.這個(gè)城市的人口將近三十萬。②“apopulationof+數(shù)量”表示人口數(shù)量。e.g.Theworldhasapopulationof7.2billion.世界上有72億人口。③通常用large/big/small來修飾。e.g.ThepopulationofChinaisverylarge.中國人口眾多。Thepopulationinthisareaisbecomingsmallerandsmaller.這個(gè)地區(qū)的人口越來越少?！驹O(shè)計(jì)意圖】學(xué)習(xí)核心句型，掌握本節(jié)課的重要知識(shí)點(diǎn)。4.Reviewthecomparativedegreeandsuperlativedegreeofadjectivesoradverbs.T:Justnowwesawtheusagesofcomparativedegreeandsuperlativedegreeofadjectivesoradverbs.Nowlet’sreviewtogether.形容詞、副詞的比較級、最高級的構(gòu)成規(guī)則：(1)一般在形容詞、副詞后加er表示比較級，加est表示最高級。small smaller smallest(2)以不發(fā)音的e結(jié)尾的，只加r表示比較級，加上st表示最高級。large larger largest(3)以輔音字母+y結(jié)尾的，變y為i，再加er表示比較級；加est表示最高級。early earlier earliest(4)重讀閉音節(jié)單詞，雙寫最后一個(gè)輔音字母，然后加er表示比較級；加est表示最高級。big bigger biggest(5)在雙音節(jié)和多音節(jié)的形容詞和副詞前加more表示比較級；加most表示最高級。happilymorehappily mosthappily(6)不規(guī)則的，如：good/well better bestbad/badly worse worstmany/much more mostlittle less least【設(shè)計(jì)意圖】復(fù)習(xí)鞏固所學(xué)的語法點(diǎn)，更有利于學(xué)生理解和掌握文章內(nèi)容。5.Read1aandfillintheblanks.【設(shè)計(jì)意圖】提升學(xué)生的自學(xué)能力和克服難關(guān)的意識(shí)。6.Workingroupsanddiscussthepopulationoftheworld.T:LookatthechartinPart3anddiscussthem.Thequestionscanhelpyou.【設(shè)計(jì)意圖】鞏固前面所學(xué)，提高學(xué)生的口語水平，還能增強(qiáng)學(xué)生對人口現(xiàn)狀的了解。TestPresenttheexercisesandletSsdosomepractice.Choosethebestanswer.1.—______isthepopulationofRussia?—143million.A.Howmuch B.Howmany C.What D.How2.Thereare______studentsinourschool.A.threethousands B.threethousandsof C.threethousandof D.threethousand3.—Jennyalwayshelpsothers.—______.A.Soisshe B.Sosheis C.Sodoesshe D.Soshedoes4.ThepopulationofChinais______thanthatofJapan.A.larger B.more C.fewer D.less【設(shè)計(jì)意圖】檢測并強(qiáng)化學(xué)生對本課時(shí)內(nèi)容的掌握。Step5SummarySumupthemaincontentofthisclassandrepeatthekeypoints.Welearn:1.somewords:population,billion,increase,reach,Russia,luckily,policy,measure2.somephrases:indeveloped/developingcountries,haveapopulationof…,increaseby,carryout,theone-childpolicy3.somesentences:Itsaystheworldhasapopulationof7.2billion.Itisincreasingby90millioneveryyear.Wecan:readthenumberscorrectly2346780twomillion,threehundredandforty-sixthousand,sevenhundredandeighty【設(shè)計(jì)意圖】回顧本課時(shí)的主要內(nèi)容。Step6Homework1.Read1aaloud.2.PreviewSectionC.【設(shè)計(jì)意圖】鞏固課上所學(xué)，預(yù)習(xí)新課。五、板書設(shè)計(jì)Unit1TheChangingWorldTopic2Thepop