高中英语新课标（人教版）优秀课件_必修三_414《unit 4 reading》 （可编辑ppt课件）

新课标人教版课件系列 高中英语 必修3 4 14 Unit4 Reading Astronomy thescienceofthestars Whatwasthereontheearthbeforelifebegan Whydoesscientistthinktherehasneverbeenlifeonthemoon Whydoanimalsfirstappearinthesea Whydogreenplantshelplifetodevelop Whyweremammalsdifferentfromotheranimals Wearegoingtolearnapassageabouthowlifebeganontheearth Nowreadthetextquicklywiththefollowingquestions READING Nowpleaselistentotherecordingofthetext Payattentiontothepronunciationofeachwordandthepauseswithineachsentenceandtrytofindoutthecharacteristicsofthewholepassage Nextyouaretoreadandunderlinealltheusefulexpressionsorcollocationsinthepassage Copythemtoyournotebookafterclassashomework Getthemainideaofeachparagraph Readthepassagequicklyandfindouttheanswerstothequestionsbelow 1 What sthemainideaofthetext 2 Thetopicsentenceofeachparagraph 3 Howmanypartscanthetextbedividedinto 4 What sthemainideaforeachpart Scanning 1 What sthemainideaofthetext Howlifebeganontheearth Thedevelopmentoflivingthings 2 Topicsentences Afterthe BigBang theearthwasjustacloudofenergeticdust Whatscientiststhinkthatthedifferentbecauseofthearrivalofsmallplantsgrowinginthewateronitssurface ManymillionsofyearslaterthefirstgreenplantsbegantoappearonlandSmallcleveranimals nowwithhandsandfeet appearedandspreadallovertheearth Howmanypartscanthetextbedividedinto Threeparts Part1 para1 Part2 para2 3 Part3 para4 Watermadeitpossibleforlifebegintodevelop Thedevelopmentoflife Thedevelopmentofpeople Energeticdust aball slowlycombine theearthcooleddown itexplodedandproducedkindsofgases water theearth satmosphere BigBang ReadPara1 andfindouthowtheearthcameout Fillintheblankswiththeproperwords Afterthe theearthwasacloudof Laterthedustbeganto Into Andthenit loudlywithfireandrock whichwereintimeto thewatervapour carbondioxide whichweretomaketheearth s Astheearth down beganto onitssurface Waterhad fromplanetsorsatellites butit ontheearth Thatmadeitpossibleforlifetobeginto energeticdust combine exploded produce cooled appear disappeared stayed develop BigBang aball atmosphere water Readpart2verycarefully andfilloutthechart Howlifebeganonearth water 1 2 3 4 insects onland 5 6 7 8 dinosaurs onland 9 smallplantsinwater shellfishandallsortsoffish greenplantsonland amphibians onlandandinwater forests reptiles onland mammals onland Fillintheblankswiththeproperverbs Thearrivalof encouragedthe ofearly Manymillionsofyearslater begantoappear Later appeared Somewere Otherscalled wereabletoliveonlandswellas Whentheplantsgrewintoforests appearedforthefirsttime Aftertheydisappeared becamemoreimportant Theywerethelastgroupofanimalsdifferentfrombecausethey fromwithintheirbodies development shellfishandallsortsoffish onland landanimals amphibians dinosaurs mammals produced smallplants thefistgreenplants insects inthesea Intensivereading 1 Whywastheearthdifferentfromotherplanets A Itproducedalotofheat B Thewaterremained C Waterdisappeared D Itwastheoldestplanet 2 Whywaslifeabletodevelopontheearthbutnotonotherplanets A Theearthhadasolidshape B Theearthwasnottoohotandnottoocold C Theearthdidn thaveharmfulgasesinitsatmosphere D Thewaterstayedontheearthbutnotonotherplanets 3 Whywasitnecessaryforplantstogrowbeforeanimals A Animalsneededplantstoprotectthemfromthesun B Animalscouldhidefromhuntersinforests C Itwaseasierforplantstogrow D Plantsprovidedoxygenforanimalstobreathe 4 Whatproblemiscausedbyhumanbeings A Theycauseglobalwarming B Theyexisteverywhereontheearth C Theyfindnewmethodsofgrowingcrops D Theyenjoyhuntingandfishing Puttheorderofdevelopmentoflifeintoatimeline insectsandamphibiansappearasolidballreptilesappearacloudofdustshellfishandotherfishappeardinosaursappearsmallplantsgrowonthewaterplantsbegintogrowondrylandpresenceofwatermammals includinghumans appear D B I G E H A C F J Post reading Whyisitwronginfilmsandstoriestoshowdinosaursandpeopletogether 2 Whydoyouthinkthathumansarethecleverestanimalsontheearth Dinosaursdiedoutlongbeforehumanbeingsdevelopedontheearth Theyarethecleverestanimalsbecausetheyhavelargerbrainsthananyothercreaturesontheearthsofar Itexplodedloudlywithfireandrock whichwereintimetoproducethewatervapour intime forsth todosth notlate及时 不迟Shewillbebackintimetopreparedinner 她来得及回来准备晚饭 intime soonerorlater eventually迟早 最后I llseehimintime 总有一天我会遇见他 WordStudy in outoftime in notinthecorrecttime合 不合节拍 sth beto do something willdefinitelyhappen oritmusthappen不可避免要发生或必须发生 e g Theysaidgoodbye littleknowingthattheywerenevertomeetagain Sheistobehonouredforthisgreatwork Mr Clarksaidtohisdaughter Youaretobehomeby10o clockatthelatest Theaudienceclappedintimetothemusic 观众合着音乐的节拍拍手 sb sth bedifferentfrom notlikesomeoneorsomethingelseinoneormoreways与 不同 2 Nobodyknewthatitwasgoingtobedifferentfromotherplanetsgoingroundthesun Citylifeisquitedifferentformcountrylife 都市生活与乡村生活是非常不同的 注意 1 强调different时用very much quite entirely totally等词 2 有时 美语口语中用than 英语口语中用to来代替from goingroundthesun为现在分词短语 做定语 表示一般的动作 例如 Menbreakingthelawwillbepunished Menwhobreakthelawwillbepunished 现在分词短语作定语 也可表示进行的动作 例如 Canyouseethegirldancingwithyourboyfriend Canyouseethegirlwhoisdancingwithherboyfriend 你能看到与男友跳舞的那个姑娘吗 3 Thisencouragedthedevelopmentofearlyshellfishandallsortsoffish 这为早期贝类及其他各种鱼类的发育进一步创造了条件 名词后缀 ment加在动词之后表示 1 行为 例如 argument betterment development treatment 2 结果 例如 arrangement settlement statement 3 工具 例如 instrument pavement 4 Itallowedtheearthdodissolveharmfulgases whichhadbecomepartoftheearth satmosphere intotheoceansandseas allowvt 允许 许可 容许allow n pron doingallowsb todobeallowedtodo Myfatherdoesn tallowsmokingathome Infacthedoesn tallowustosmokeanywhereatanytime 父亲不允许在家里吸烟 实际上 他不允许我们在任何地方任何时候吸烟 Areweallowedtousethecomputer 我们可以用电脑么 5 Thisencouragedthedevelopmentofearlyshellfishandallsortsoffish encourage鼓舞 促进 怂恿 后接名词 代词 也可接不定式作宾语补足语 如 Highpricesforcornandwheatwillencouragefarming 玉米和小麦的高价将促进农业的发展 Mysuccessencouragedmetocontinue 我的成功鼓励我继续干下去 Heencouragedmetolearndancing 他鼓励我去学跳舞 6 Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanb