人教版 Unit第2課時 The Internet DiscoveringUsefulStructures（教案）

名校聯(lián)誼|優(yōu)質(zhì)資源速遞，讓教與學(xué)更容易5/5Unit3TheInternetThesecondperiodteachingplanDiscoveringUsefulStructuresTitle：DiscoveringUsefulStructuresType：GrammarTeachingObjectives:1.Analyzetheformsandfeaturesofthepresentperfectpassivevoice.2.Findoutthedifferencesinmeaningandfunctionbetweentheactiveandpassiveforms.3.Masterthefunctionsofthepresentperfectpassivevoiceinthecontextanduseitinrealsituations.KeyPointsandDifficultPointsKeypoints:Understandthemeaningandfunctionofthepresentperfectpassivevoice.Difficultpoints:Usethepresentperfectpassivevoiceinrealsituations.TeachingProceduresStepILead-in1.Trytofindallthesentencesusing“have/hasdone”or“have/hasbeendone”inthetextonpage282.Showtheresults：①MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.②TherearecountlessarticlestellingushowtheInternethasmadeourlivesmoreconvenient.③ButtheInternethasdonemuchmoreforpeoplethansimplymakelfiemoreconvenient.④People'sliveshavebeenchangedbyonlinecommunitiesandsocialnetworks.⑤Manypeoplehavebeenhelpedbytheclub.⑥Hercompanyhasbecomequitesuccessful.⑦JanhasstartedtakingonlineclassestolearnmoreabouthowtousetheInternettomakesocietybetter.⑧Jan'slifehasbeengreatlyimprovedbytheInternet.StepIIFastreadingReadthepairsofsentences.Underlineandcomparethedifferentverbforms.①Jan'slifehasbeengreatlyimprovedbytheInternet.②TheInternethasgreatlyimprovedJane'slife.③MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.④PeoplehavewrittenmuchaboutthewondersoftheWorldWideWebStepIIIRevision1.ThePresentPerfecttense(現(xiàn)在完成時)2.VerbformActive：have/has+v-edPassive：have/hasbeen+v-ed3.現(xiàn)在完成時的結(jié)構(gòu)4.Summary一、含義：1、表示動作發(fā)生在過去,到現(xiàn)在已經(jīng)完成或?qū)ΜF(xiàn)在產(chǎn)生的影響。2、動詞和被修飾主語構(gòu)成被動關(guān)系。二、構(gòu)成：肯定式：have/hasbeendone否定式：have/hasnotbeendone一般疑問句：Have/Has+主語+beendone?特殊疑問句：疑問詞+have/has+主語+beendone?三、解題步驟 1.找時狀語2.找主語3.定謂語四、現(xiàn)在完成時被動語態(tài)用法（一）找出表示時間狀語的詞語并總結(jié)用法。1.Theproblemhasbeendiscussedfor2days.2.Manynewbuildingshavebeenbuiltinthepastfewyears.3.Twonovelshavebeenwrittenbyhimsofar.

4.ThecomputerhasbeenusedeverydaysinceIboughtit.5.Thedirtyclotheshavealreadybeencleaned.表示一個被動的動作或狀態(tài)從過去開始一直持續(xù)到現(xiàn)在，常連用的時間狀語有：for+段時間，since+時間狀語(從句)，thesedays,sofar,uptonow,inthelast/pastfewyears等,總結(jié)如下.常與現(xiàn)在完成時連用的時間狀語：

already已經(jīng)(肯定句)yet已經(jīng)（否定句或者疑問句）recently/lately最近sincethen從那時起eversince自那以來ever曾經(jīng)sofar迄今為止foralongtime很長一段時間bynow到現(xiàn)在為止inrecentyears在最近幾年里in/during/overthepast/lastyears在過去的幾年里（二）表某被動動作對現(xiàn)在造成的影響或結(jié)果，常與already,yet,just,ever,never,recently等連用。即學(xué)即練：Thebike____________________(notrepair)yet.（hasnotbeenrepaired）I_____already________________(introduce)toMr.Smith.（havebeenintroduced）注意：有些動詞沒有被動語態(tài),如不及物動詞happen,takeplace,breakout等。Greatchanges__________(take)placeinmyhometowninthepasttenyears.（havetaken）（三）現(xiàn)在完成時被動語態(tài)的解題步驟1.找時間狀語：找與現(xiàn)在完成相對應(yīng)的時間狀語；2.找主語：主語與動詞構(gòu)成被動關(guān)系；3.定謂語：確定謂動形式：have/has(not)beendone。StepIVExercises一、單句語法填空1．Theirnewhouse_______________(decorate)fortwomonthsandtheywillsettleinitinthenearfuture.2．Theirnewcars_________________(advertise)ontheInternetforalongtime.3．Alltheathletes_______________(select)frommillionsofpeoplealloverthecountryinthepasttwomonths.4．Greatchanges___________(take)placeinmyhometowninthepasttenyears.5.She_________(return)thisbooktothelibraryalready.【答案】1.hasbeendecorated2.havebeenadvertised3.havebeenselected4.havetaken5.hasreturned二、Changethesentencesintothepresentpassivevoice.1.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.2.Someonehaslostanidentitycard.Anidentitycardhasbeenlost.3.HaveyouconfirmedtheWi-Fipassword?HastheWi-Fipasswordbeenconfirmed?4.Haveyoupressedthebuttonyettocopythefile?Hasthebuttonbeenpressedyettocopythefile?5.Hasanyonemadeacommentabouttheonlinedatabase?Hasa/anycommentbeenmadeabouttheonlinedatabase?三、TheInternetisbringinggreatchangestomodernlife.Completethetextwiththecorrectformsofthewordsinbrackets.Theworld_________________________(turnupsidedown)sincetheinventionoftheInternetandtheintroductionofpersonalcomputersintonearlyeveryhome.ThetwininventionsofthepersonalcomputerandtheInternet__________________(consider)tobeamongthetwomostimportanteventsofthelastcentury.Shopping_________________________(completelychange).Ratherthangoingouttostoresweeklyorevendailymoreandmorepeopleorderthingsfromclothestotoystofoodsonlineandhavethemdelivereddirectlytotheirhomes.Socialcommunication__________________(takeover)bytheInternetInthepast,letters,phonecalls,andface-to-facemeetingswerenecessarytobuilduprelationships,butnowonlinecommunicationisoftentheonlysocialinteractionthatsomepeoplehaveallday!Games,music,moviesandsoon________________________(heavilyinfluence)bytheInternet.NewkindsofcrimesarehappeningontheInternet,too,socybersecurityhastobeconstantlyupdated【答案】1.hasbeenturnedupsidedown2.ha