高考英语 Unit 4 How Life Began On The Earth复习教案 新人教版.doc

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1、山西省阳泉市荫营中学高考英语Unit4HowLifeBeganOnTheEarth复习教案新人教版learningaims:lLearnhowtousedifferentreadingskillsfordifferentreadingpurposes,(inferring;skimming;detailedreading,andsoon.)Difficultandimportantpoints:lDevelopourreadingability.lLearnthefollowingwordsandphrases:theory;violent;unlike;harmful;mutiply

2、;exist;intime;layeggs;givebirthto;inone’sturn;prevent…from.Reading:HowlifebeganontheearthI.Skimming(略读)Readingstrategy(策略):Gothroughthepassagequicklytogetthemainideaofeachparagraph.Don’tworryaboutthedetailsandnewwords.Skimthepassageandmatchthemainideawitheachparagraph.Para.1Theformation(形成)ofthe

3、earthPara.2TheimportanceofwaterforlifePara.3AwidelyacceptedtheoryabouttheformationoftheuniversePara.4ThearrivalofhumansandtheireffectsontheearthPara.5ThedevelopmentofplantsandanimalsontheearthII.Detailedreading(细读)Readingstrategy:Readthepassagecarefullyparagraphbyparagraghandtrytogetmoreinformat

4、ion.Thenanswerthequestions.Para1&2:theformationoftheuniverseandtheearth1.Abouthowtheuniversebegan,whichtheoryiswidelyaccepted?2.Whatform（形状）wastheearthafterthe“BigBang”?3.Whatmadeuptheearth’satmosphereaftertheearthexploded?4.Inthesentence“Itexplodedloudlywithfireandrock.Theywereintimetoproduceca

5、rbon,nitrogen…”here“they”refersto__________.“Intime”means_______.Para3theimportanceofwaterforlife•Whatmadetheearthdifferentfromtheotherplanetsisthat________remainedontheearth.•Thesignificance(意义)ofthecontinuedpresenceofwateristhatitallowed________________________.Para4Thedevelopmentoflife7._____

6、______8.dinosaurs9＿＿＿.____1.smallplantsinthewater3.____________4.insectsonland5._____________6._________2._________2._________Para5thearrivalofhumansandtheireffectsontheearth1.Whatproblemshavebeencausedbyhumanstotheearth?2.Whatdoesthelastsentencemean?III.Fromthetext,wecaninfer（推断）exceptthat___.A

7、.Thepassagetellsusthescientificideaofhowlifebeganontheearth.B.Itiswrongtoshowfilmswithdinosaursandpeopletogether.C.Finally,humansruletheworld,buttheyarenottakingcareoftheearthverywell.D.Lifebeganonlandandtheninwater.IV.Canyo