高一英语 Unit19《Modern agriculture第四课时》精品教案 旧人教版第一册VIP免费

TheFourthPeriodTheuseofitTeachingAims:1.Reviewthedifferentusagesof“it”.2.Getthestudentstoremembersomeusefulsentencepatterns.3.Getthestudentstodomoreexercisessothattheycanmasterthegrammaritem.TeachingImportantPoints:Masterthedifferentusesof“it”,esp,theemphaticuseandtheuseasapreparatorysubjectorapreparatoryobject.TeachingDifficultPoint:Howtomasteranduse“it”correctly.TeachingMethods:1.Reviewmethodtorevisethecommonuseof“it”.2.Inductivemethodtogothroughsomesentencepatternswith“it”.3.Practicetoconsolidatetheuseof“it”.TeachingAids:1.aprojectorandsomeslides2.acomputerformultimediauseTeachingProcedures:stepⅠ.GreetingsandRevision(Teachergreetsthewholeclassasusualandshowsthescreen.)T:Sofarwe'velearnedseveralusesof“it”.Nowpleaselookatthescreen.Discussthesentenceswithyourpartnerandtellwhattheword“it”ineachsentencereferstoanditsfunction.WriteyouranswersonapieceofpaperandlaterI'llasksomestudentstosaytheanswers.Discussthefollowingsentencesandtellthefunctionof“it”.1.It'sdifficulttorememberalltheirnames.2.It'sveryquietinthecafe.3.Itrainedforthreedays.4.Hemadeitclearthathedidn'twanttospeaktome.5.Itwasniceseeingyou.6.ItwasonTuesdaythatMrs.Smithcame.7.It'sthreemilesfromheretothenearestgarage.8.Atallmanstoodupandshookhands.ItwascaptainLawrie.9.Ihearyouboughtanewbike.Canyoushowittome?10.Itwasfiveo'clockwhenwegotbackhomeyesterday.11.Itwasdirtyandwetbelowtheshipwheretheslaveswerekept.12.Itwasonthiscoastthatlotsofhispeopledisappeared.13.Itwasmostlikelythatonethirdofthemhadlosttheirlives.(Afterafewminutes.)T:Areyouready?Ss:Yes.T:Whowillgiveustheanswers?Onestudent,onesentence.Volunteers?用心爱心专心1SA:“It”isusedasaformalsubjectinthefirstsentence.Itsrealsubjectistheinfinitive“torememberalltheirnames.”SB：2.“It”referstopresentsituation.SC:3.“It”refersto“weather”.SD:4.“It”isusedasaformalobject.SE:5.“It”isusedasaformalsubject.SF:6.Thissentenceisanemphaticstructure,emphasizingtheadverbialoftime.SG:7.“It”isusedhereasanimpersonalpronoun,referringtodistance.SH:8.“It”hereisusedtopointoutdefinitelyaperson.SI:9.“It”hereisappliedtoanewbike.SJ:10.“It”referstotime.SK:11.“It”isusedasthesubject,expressingstateofthingsingeneral.SL:12.Thissentenceisalsoanemphaticconstruction,emphasizingadverbialofplace“onthiscoast”.SM:13.Theword“it”hereisusedasaformalsubject.T:Quiteright.Asweallknow,theword“it”canbeusedasapersonalpronoun.Inthiscase,“it”isnotgenerallyappliedtoaperson,buttoathingorananimaljustmentioned,suchas“Sentence9”.Secondly,“it”isusedasasubjectinexpressionsoftime,weather,distance,etc,suchas,inSentence2,3,7,10,11.Thirdly,“it”canbeusedasaformalsubjectorobject.(Therealsubjectisaninfinitiveorgerundialphraseoraclause.)Suchas,insentences1,4,5,13.Fourthly,inSentence8,“it”pointstoapersonandiscalledtheDemonstrativeit.Itcanalsobeusedintheemphaticstructure,suchasinsentence6,12.StepⅡ.PracticeT:Fromtheexercisewe'vedonejustnow,wecanseethatyouareallfamiliarwiththecommonuseof“it”.Next,let'sseesomeimportantsentencepatterns.Now,I'llgiveyouanexerciseonthescreen.(Showthescreen.)Pairworkorgroupwork.Someofthepatternsareperhapsnotfamiliartoyou.Ifso,lookattheanswerssomeminuteslaterandrememberthem.Completethesentences,payingattentiontothestructuresofthemandtheuseof“it”.1.__________(据报道)thatdozensofchildrendiedintheaccident.2.__________(真遗憾)thathecan'tswimathisage.3._...