搜索
第页1Unit5Films(B)一、教学内容：9AUnit5Grammar二、教学目标：1.过去完成时2.用‘should’,‘oughtto’,‘hadbetter’,‘haveto’and‘must’提建议3.用‘whynot’,‘whydon’tyou’and‘perhaps’提建议三.具体教学过程（一）过去完成时1.Structure(结构)：had+p.p.(动词的过去分词)2.过去分词的构成规则变化：1)一般动词+edclean—cleanedbelieve—believed2)以e结尾的动词+dlive—liveduse—usedraise—raised3)以“辅音字母+y”y→i+edtry—triedcry—criedstudy—studied4)末尾只有一个辅音字母的重读闭音节动词，双写辅音字母再加edstop—stoppedshop—shopped不规则变化：1)没有变化cut—cutcost—costlet—letput—put2)过去式、过去分词相同buy—bought—boughtbuild—built—builtburn—burnt—burntcatch—caught—caughtfight—fought—fought3)原形与过去分词相同become—became—becomecome—came—comerun—ran—run4)无一点规律do—did—donegive—gave—givenfly—flew—flown巩固练习：用过去完成时完成下列表格VerbPastperfecttenseVerbPastperfecttenseacthelpbeopenbeginseebringsing3.过去完成时的概念：过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作，即“过去的过去（thepast第页2past）”。Shehadputmostofhereffortintoballettrainingbeforesheenteredthefilmindustry.ShehadbeenamodelbeforeshebecameaHollywoodsuperstar.巩固练习：1)Thetrain_________________(leave)beforeIgottotherailwaystation.2)Wehadbreakfastafterwe________________(do)morningexercise.3)MissYang_________________(be)atypistbeforeshemovedtoShenzhen.4)Whenwereachedthecinema,thefilm_____________________(begin).5)We____________________(learn)twounitsbylastmonth.6)They______________________(be)totheUSAtentimesbytheendoflastSeptember.7)She__________________(finish)herhomeworkbeforenineo’clocklastnight.与过去完成时连用的时间状语有：（1）by+过去的时间点。如：by1990,byyesterdayevening,bythen（2）bytheendof+过去的时间点。如：bytheendoflastterm（3）before+过去的时间点。如：before9:00a.m4.过去完成时的句式1)肯定句:主语+助动词had+过去分词（v.-ed）+其他。其中had通用于各种人称。Ihadbeenherebeforehecamehere.2)否定句：主语+hadn’t（hadnot）+v.-ed+其他Ihadn’tbeenherebeforehecamehere.3)一般疑问句：Had+主语+v.-ed+其他？Hadyoubeenherebeforehecamehere?Yes,Ihad.No,Ihadn’t.4)特殊疑问句:特殊疑问词+had+主语+v.-ed？—WhathadshebeenbeforeshebecameaHollywoodsuperstar?—ShehadbeenamodelbeforeshebecameaHollywoodsuperstar.巩固练习:句型转换：1)Thepartyhadbegunwhenhearrived.(改为一般疑问句）_________________________________________2)Ihadfinishedthecompetitionby8:00yesterday.(对划线部分提问）__________________________thecompetition?3)Theyhadworkedfor10yearsbytheendoflastyear.(改为否定句）————————————————————————————。4)Hadyoureachedthetopofthehillbeforemidnight?(否定回答）第页3——————————————————————————5.完成时中常见的短暂性动词和延续性动词的转换如下：·borrow→keep，·buy→have，·begin→beon，·finish→beover，·come/go/getto+地点→bein+地点，·die→bedead，·leave→beaway，·gettoknow→know，·join+组织→bein+组织或bea+成员。·open→beopen·close→beclosed1)I___________________________(买)thebookfor10daysbeforeyouaskedmetobuyone.2)Hisgrandpa_____________________________(死)for3years,beforehewenttocollege.3)Mymum________________________________(去)Shanghaiforaweek,beforetheschoolwasover.6.过去完成时与一般过去时的区别１）时间状语不同．过去完成时在时间上强调“过去的过去”，而一般过去时只强调过去某一特定的时间Theyhadarrivedatthestationbytenyesterday.(说明不到10点就在车站了）Theyarrivedatthestationattenyesterday.2）在没有明确的时间状语做标志时，谓语动词动作发生的时间先后需依据上下文来判断，先发生的用过去完成时，后发生的用一般过去时．AudreyHepburnhadalsobeenamodelbeforeshebecameaHollywoodsuperstar.3）当两个或两个以上的动作用and或but连接时，按时间顺序只需用一般过去时代替过去完成时；另外在引导的从句中由于这些连词本身已经表示时间的先后，因此也可以用过去时来代替过去完成时Heenteredtheroom,turnedonthelightandreadaneveningpaper.I(had)calledherbeforeIlefttheoffice.（二）用‘should’,‘oughtto’,‘hadbetter’,‘haveto’,and‘must’提建议1.should和oughtto用should/oughtto可以表示“劝说”或“督促”，和must一样，但三者语气强弱不同。用oughtto则语气上不那么坚定。用should语气比较肯定一些，说话人的主观信心要强烈一些。用must则在语气上最强烈。Ioughttowritetohimtoday.Weshouldprotecttheenvironment.Youmustdoyourhomework.2.must与havetomust表示“必须”，侧重于说话人的主观意志。haveto表示“必须”，侧重于客观的需要，含有“不得不”的意味。第页4HemustsayitinEnglish.(Iwanthimtodo.)HehastosayitinEnglish.(Becausehedoesn’tknowChinese.)Hemustmovethebigbox.(Iamtoobusytohelp.)Hehastomovethebigbox.(He’sgotnoonetohelphim.)3.hadbetter(常缩写为’dbetter)，是一固定词组，表示“最好”，用于表示对别人的劝告、建议或表示一种愿望。hadbetter后面加动词原形，即hadbetterdosth.。不论主语是第几人称，句子无论是何种时态，hadbetter的形式不变。有时简略地说成“betterdosth.”。You’dbetterputonthecoat.It’scoldoutside.hadbetter的否定形式为hadbetternotdosth.表示“最好不要做……”。You’dbetternotmissthelastbus.You’dbetternotplayontheroad.It’sdangerous.反意疑问句：Youhadbettergetthereontimetomorrow,____________?Youhadbetternotplayontheroad,___________?对长辈说话时用：Itmightbebetterforyou…Itwouldbebetterforyou…（三）用‘whynot’,‘whydon’tyou’and‘perhaps’提建议Whynot…?/Whydon’tyou…?这两种句型结构常用于说话人向对方提出一个建议，意思是“为什么不……？”；“你为什么不……？”Whynot…?/Whydon’tyou…?后面必须跟动词原形。Whynotgoswimming?=Whydon’tyougoswimming?Whydon’tyougooutforawalk?=Whynotgooutforawalk?巩固练习：1.Mymotherwasill.I______stayathometolookafterher.A.mustB.havetoC.couldD.can2.—____goshoppingwithyourfather?—That’sagoodidea.A.Whydon’tB.WhynotC.DoD.Does3.You___giveupsmoking.A.wouldbetterB.hadbetterC.wouldbettertoD.hadbetterto4.Whydon’tyou_____climbingwithustomorrow?A.togoB.goingC.goD.goes5.Cars,busesandbikes___stopwhenthetrafficlightschangestored.A.canB.mayC.mustD.need6.It’stoohot.Perhapsyou______swimmingthisafternoon.A.mustgoB.shouldgoC.maygoD.cango7.Tomakeourhometownmorebeautiful,you______throwrubbishintotheriver.第页5A.needn’tB.mustn’tC.mustD.need8.Howinterestingthenewsis!Why_____joinus?A.won’tB.noC.don’tD.not【模拟试题】（答题时间：30分钟）*一、用所给动词的适当形式填空：1.HowmanyEnglishwords_____you________(learn)bytheendoflastterm?2.I_____(read)the