深圳牛津英語七年級英語下冊第四單元 第一課時

深圳牛津英語七年級英語下冊第四單元第一課時深圳牛津英語七年級英語下冊第四單元第一課時深圳牛津英語七年級英語下冊第四單元第一課時資料僅供參考文件編號：2022年4月深圳牛津英語七年級英語下冊第四單元第一課時版本號：A修改號：1頁次：1.0審核：批準(zhǔn):發(fā)布日期：Unit4Savethetrees(第一課時)一、核心詞匯1.savev.拯救2.pinen.松樹3.discussv.討論4.branchn.樹枝5.rootn.根6.fightv.與……作斗爭7.againstv.反對8.examplen.例子9.harmfuladj.有害的10.gasn.氣體11.producev.產(chǎn)生12.oxygenn.氧氣13.majoradj.主要的14.convenientadj.方便的15.furnituren.家具16.imaginev.想象17.diseasen.疾病18.digv.挖19.holen.洞20.carryv.搬21.containern.容器二、重點短語1.fightagainst對抗，與...作斗爭2.helpsb.dosth.幫助某人做某事3.knowabout知道，了解4.inmanyways在很多方面，多角度5.takein吸收，理解6.comefrom來自（befrom）7.forexample例如8.infact事實上，確切地說9.lookaround環(huán)顧四周10.(be)madeof由……制成11.millionsof大量的12.(be)goodfor對……有好處三、基礎(chǔ)知識點1.IfIplantthisseedintheground,willitbecomeapeartree,Hi?(1)if引導(dǎo)條件狀語從句時，意為“如果”。主句（包括祈使句和含有情態(tài)動詞can，may，must等的句子）用一般現(xiàn)在時，從句也用一般現(xiàn)在時；主句用過去時，從句也用過去的某種時態(tài)；如果主句是一般將來時，從句要用一般現(xiàn)在時表示將來。Eg:Wewillgooutifitisfinetomorrow.Youmustseeadoctorifyouareill.a不定冠詞，意為“一（個……）”，用在以輔音音素開頭的單數(shù)可數(shù)名詞前；在以元音音素開頭的單數(shù)可數(shù)名詞的前面要用不定冠詞an。不定冠詞a/an常放在單數(shù)可數(shù)名詞前，表示一個不確定的事物或人。其用法如下：第一次提到某人或某物時，用不定冠詞。Eg:You'dbettergotoseeadoctor.表示某一類中的任何一個，是泛指。Eg:Adogisausefulanimal.表示“一”的數(shù)量，但數(shù)的概念沒有one強烈。Eg：Ihaveapen,apencilandtwobooks.用在表示時間、重量、速度、價格等名詞前，意為“每一”。Eg:WehavesixEnglishclassesaweek.Lookaroundthisroom.與look相關(guān)的短語：lookfor尋找；lookover仔細(xì)檢查，翻閱；lookafter照顧；lookup抬頭看Alotoffurnitureismadeofwood.很多家具都是由木頭制成的。(be)madeof(看得出原材料)=(be)madefrom(看不出原材料)意為“由...制成”。如：Thechairismadeofwood.這把椅子是由木頭制成的。Paperisusuallymadefromwood.紙通常由木頭制成。Butwecutdownmillionsoftreeseveryyear.但每年我們都會砍伐數(shù)百萬的樹木。millionsof意為“數(shù)以百萬計；大量的”。如：MillionsofpeoplearoundtheworldlearnEnglish.全世界無數(shù)人在學(xué)習(xí)英語?！就卣埂浚篽undredsof數(shù)以百計的，成千上萬的；thousandsof數(shù)以千記的，成千上萬的；tensofthousandsof數(shù)以萬計的；hundredsofthousandsof數(shù)以十萬記的注意：hundred，thousand，million，billion等前面有具體的數(shù)詞時，其后不加-s，也不帶介詞of。Eg:twohundred200Shecanskateataveryhighspeedbecauseshpractisesalot.Practise及物動詞，意為“訓(xùn)練，練習(xí)”。賓語可以是名詞、代詞或動名詞。Eg:YoumustpractisespeakingEnglisheveryday.Asaresult,thenumberofkindsofanimals,birds,insectsandtreesintheworldisdecreasing.Thenumberof意為“……的數(shù)量”。Eg:Thenumberofthestudentsinourclassis50.【拓展】Thenumberof……的數(shù)量后接復(fù)數(shù)名詞，但謂語動詞要用單數(shù)形式常跟large，small等詞作表語Thenumberofthestudentsinourschoolis2000.Anumberof大量；許多，相當(dāng)于many接復(fù)數(shù)名詞作主語時，謂語動詞用復(fù)數(shù)形式Number前可加small，large，huge等表示程度Anumberofstudentsareplayingfootball....butthespeakerdidnotstopspeakinguntiltwentypasttwelve.Not...Until...意為“直到……才……”。主句的動詞一般是非延續(xù)性動詞，它所表示的動作直到until所表示的時間才發(fā)生。Eg：Youcannotleaveuntilyourworkisfinished.知識練習(xí)：根據(jù)句意及首字母提示完成單詞。Today,wearegoingtod______thetopic“Aredogspeople’sfriends?”Lookatthedog.Itishurt.Shallwes______.It?Theb________ofthetreesconnectwitheachotherandpasswaterandfoodunderground.Youmustn’tparkyourcarhere.Itisa______thelaw.Theworkersaref_________againstthedecisiontoreducetheirpay.Icannoti________lifewithouttrees.Softdrinksareh___________toyourhealth.Thef___________intheroomisquiteold.選出可以替換劃線部分的選項。Wecanproducefreshwaterfromtheoceannow.A.getB.workC.makeD.takeLifeismoreconvenientthanbefore.easierB.harderC.theeasiestD.thehardestTreesareimportantbecausetheycantakeinharmfulgases.A.makeB.absorbC.stopD.putYoucandomanythingsathome.Forexample,youcandosomehousework.ForinstanceB.FormoreC.ForeverD.ForyouInfact,Ididn’tlistentoourteachercarefully.ReallyB.ActuallyC.ExactlyD.Certainly單項選擇Thedoctorgavehimsomepillsto__________thepain.takeoffB.takeinC.takeonD.takeaway2.Dosomesportseveryday.Itwillhelpyoukeep__________.A.healthyB.healthilyC.kindlyD.excitedly3.——Thereare_________peoplehereinourcity.——Actually,thereare__________lionsof;threemillionB.millionsof;millionsC.millionsof;threemillionofD.millionof;threemillionof——Whattimeisitnow?——Itis20:00.Ithinkweshouldstop__________first.havingsupperB.havesupperC.tohavesupperD.tohavingsupper——Ibought____________furniture.——Really?What________?anew;isitmadeofB.anew;doesitmadeofC.anewpieceof;isitmadeofD.anewpieceof;doesitmadeofLookatthisoldbridge!Itismade__________stones.A.fromB.ofC.intoD.upI_________theswimmingclubifyou________it.A.join;joinB.willjoin;joinC.join;willjoinD.willjoin;willjoinHeheardsomeonecallinghisname,sohestoppedand________.Buthecouldn’tseeanyone.A.lookedaroundB.lookedupC.lookedintoD.lookedfor——Wecan’tlivewithouttrees.Theymakeourlives_________.——Iagree.Weshouldstoppeople_________trees.A.convenient;tocutdownB.conveniently;tocutdownC.convenient;cuttingdownD.conveniently;cuttingdownthelittledoghelpshisowner_________manyways__________hisdailylife.A.in;atB.on;inC.in;inD.on;on用所給單詞的適當(dāng)形式填空。Treesareimportantinour(day)lives?Thereare(many)peopleinthishallthanthatone.Weallknowthatsmokingis(harm)toourhealth.Airisamixture(混合物)of(gas).Mr.Greenlivesina(convenience)life.Timhasbeenafire(fight)forfiveyears.Howdoesafish(breath)underwater?Manyplantsdiedbecauseofthewater(pollute).完形填空AChineseman____1_____CaiLuninventedpaperalmost2,000yearsago.Hemadepaper____2_____wood.Hethenputallthepapertogetherandmadethepaper___3_____abook.Nowwestillusewoodtomakepaper.Weusealotofpapereveryday.Ifwekeepon_____4____somuchpaper,therewillnotbeanytreesleftontheearth.If____5____notrees,therewillbenopaper.Everyday,people___6____about2,800tonsofpaper.Weuse17treestomakeonetonofpaper.Thismeanswearecuttingnearly48,000treeseveryday.Sinceit___7___morethan10yearsforatreetogrow,wemuststartusing____8____papernow.Sohowcanwesavepaper?Wecanusebothsidesof____9____paper,especiallywhenwearemakingnotes.Wecanchoosedrinksinbottlesinsteadofthoseinpaperpackets.Wecanalsousecottonhandkerchiefs(手帕)butnotpaperones.Whenwegoshopping,wecanusefewerpaperbags.Iftheshopassistantgivesusapaperbag,wecansaveitandreuseitlater.Everyonecanhelptosavepaper.Ifweallthinkcarefully,wecanhelp___10___trees.Butweshoulddoitnow,beforeitistoolate.1.A.callB.callsC.calledD.calling2.A.fromB.ofC.intoD.for3.A.fromB.ofC.intoD.for4.A.wasteB.towasteC.wastedD.wasting5.A.therewillbeB.thereareC.therewasD.therewasn’t6.A.takeinB.putonC.throwawayD.putaway7.A.spendsB.takesC.costsD.pays8.A.manyB.fewC.fewerD.less9.A.aB.apieceC.onepieceD.many10.A.protectB.protectsC.protectingD.toprotecting閱讀理解Cantreestalk?Yes---butnotinwords.Scientistshavereasontobelievethattreesdocommunicatewitheachother.Notlongago,researcherslearnedsomesurprisingthings.Firstawillowtree(柳樹)attackedinthewoodsbycaterpillars(毛毛蟲)changedthechemistryofitsleavesandmadethemtastelesssothatthecaterpillarsgottiredoftheleavesandstoppedeatingthem.Theevenmoreastonishing,thetreesentoutaspecialvapor---asignalcausingitsneighborstochangethechemistryoftheirownleavesandmakethemselvestastealsoterrible,too.Talking,ofcourse,doesn’tneedtobealwaysinwords.Wecantalktoeachotherbysmiling,raisingourshouldersandmovingourhands.Weknowthatbirdsandanimalsuseawholevocabularyofsongs,soundsandmovements.Beesdancetheirsignals,flyingincertainpatternsthattellotherbeeswheretofindnectar(花蜜)forhoney.Soshyshouldn’ttreeshavewaysofsendingmessages?1、Fromthepassage,whichkindofleavesdon’tcaterpillarseat?leaveslyingontheground.B.leaveshavinganunpleasanttaste.C.leavesbeesdon’tlike.D.leaveshavinganunfamiliarshape.2、Thewillowtreedescribedinthepassageprotecteditselfby_________.growingmorebranchesB.talkingwithbirdsandbees.C.changingitsleafchemistryD.shakingcaterpillarsoff3、Accordingtothepassage,thewillowtreewasabletotalkwithothertreesby___________.WavingitsbranchesB.givingoffaspecialsmellC.drop