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Unit3LanguageinuseModule1WondersoftheworldObjectives:Tosummariseandconsolidatetenseslearnedbefore:1)thepresentsimpletense2)thepastsimpletense3)thefuturesimpletense4)thepresentcontinuoustense5)thepastcontinuoustense6)thepresentperfecttense语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可让学生从已学课文中找相应例句，引导学生试着从所观察到的语言现象中总结出语法规律。Observethefollowingexamplescarefully.Theyareallfromthismodule.1.IvisitedtheGiant’sCausewaytwoyearsago.2.ItproduceselectricityformillionsofpeopleinChina.一般过去时一般现在时3.I’veneverseenit,soI’mnotsureIagreewithyou.4.Ilookedtotheeast—theskywasbecominggrey.5.You’llgetthereinfiveminutes.6.AmIgoingtherightway?7.Thesunrosebehindmeandshoneontherocks.8.IthinktheGiant’sCausewayisthemostfantasticnaturalwonder.现在完成时一般现在时现在进行时一般过去时一般现在时一般过去时过去进行时一般将来时1.Totestyoursenseofobservation2.Totestyourabilityofshort-termmemory3.TotestyourabilityofinductivemethodGuess1.I______(visit)theGiant’sCausewaytwoyearsago.2.It________(produce)electricityformillionsofpeopleinChina.3.I_________________(neversee)it,soI’mnotsureI______(agree)withyou.4.I_______(look)totheeast—thesky______________(become)grey.visitedproduceshaveneverseenagreewasbecominglookedgoReady?5.You____________(get)thereinfiveminutes.6._____I______(go)therightway?7.Thesun______(rise)behindmeand_______(shine)ontherocks.8.IthinktheGiant’sCauseway_______(be)themostfantasticnaturalwonder.willgetAmgoingroseshoneis以上我们已经通过归纳总结对本课的语法内容有一定的了解,下面就让我们进一步选择讲解该语法项的重难点。动词的时态不同时间和方式发生的动作或状态要用谓语动词的不同形式来表示，这种表示动作或状态发生时间和方式的动词形式称作动词时态。到目前为止，我们已学过英语中常用的六种时态：①一般现在时②一般过去时③现在进行时④过去进行时⑤一般将来时⑥现在完成时表示经常性发生的动作、存在的状态、日常行为、爱好、习惯性动作或客观真理、科学事实等。Igotoschoolat6:30everymorning.我每天早上六点半去上学。Thegirlsingsverywell.那个女孩唱得非常好。主语人称第一人称单数第三人称单数第一、三人称复数第二人称be动词形式amisareIamajuniorhighschoolstudent.MissLiisourEnglishteacher.LiMingandWangLinaremyclassmates.主语人称第一人称单数第三人称单数第一、三人称复数第二人称实义动词形式do(动词原形)-s/es(第三人称单数)do(动词原形)Weplaybasketballafterschool.MyuncleteachesatSunshineMiddleSchool.Ihaveagoodfriend.1.直接在动词后+slike-likesplay-plays2.以s,x,sh,ch接尾的动词：+eswash-washes3.以辅音+o接尾的动词：+esdo-doesgo-goes4.以辅音+y接尾的动词：变y为i+esfly-flies实义动词第三人称单数的变化规则实义动词一般现在时的否定句和疑问句构成要借助助动词do或does。StudentsdonotgotoschoolonSunday.—Doesyourfathergohomeatfiveintheafternoon?—Yes,hedoes./No,hedoesn’t.一般过去时构成用法常用时间状语动词的过去式1.表示过去某个时间发生的动作或存在的状态。2.表示过去经常或反复发生的动作。yesterdaylastnightin1990twodaysago…1.一般在动词末尾加-ed，如：pull-pulled,cook-cooked2.结尾是e加d，如：taste-tasted3.末尾只有一个元音字母和一个辅音字母的重读闭音节，应双写末尾的辅音字母，再加-ed，如：stop-stopped4.以“辅音字母+y”结尾的，变y为i，再加-ed，如：study-studied5.常用不规则动词过去式：am/is-wasare-weredo-didsee-sawsay-saidgive-gaveget-gotgo-wentcome-camehave-hadeat-atetake-tookrun-ransing-sangput-putmake-maderead-readwrite-wrotedraw-drewdrink-drankfly-flewride-rodespeak-spokesweep-sweptswim-swamsit-sat1.表示过去某个时间发生的动作或存在的状态。Hesaidthathereyesterday.Igotupatsixthirtyyesterdaymorning.Myfatherwroteapassageyesterdayafternoon.Didyouhaveagoodtimelastsummer?2.表示过去经常或反复发生的动作。Myfatheroftenwenttoworkbybuslastyear.WhenIwasachild,Ioftenlistenedtomusic.yesterdayyesterdaymorning/afternoon/eveninglastnight/week/month/year…twodays/aweek/threeyearsago…in1990……肯定式：主语+动词过去式+…Weheardasound.否定式：主语+did+not+动词原形+…Wedidnot/didn’thearanysound.一般疑问式：Did+主语+动词原形+…?Didyouhearasound?Yes,wedid./No,wedidn’t.beamisarewaswere肯定式：主语+was/were+…否定式：主语+wasnot(wasn’t)/werenot(weren’t)+…一般疑问式：Was/Were+主语+…?Yes,主语+was/were.No,主语+wasnot(wasn’t)/werenot(weren’t).一般过去时肯定式主语+was/were+其他.主语+动词的过去式+其他.否定式was主语+not+其他.were主语+didn’t+动词原形+其他.一般疑问句及回答Was/Were+主语+其他?(肯)Yes,主语+was/were.(否)No,主语+wasn’t/weren’t.Did+主语+动词原形+其他?(肯)Yes,主语+did.(否)No,主语+didn’t.巧记动词过去时态动词一般过去时，表示过去发生事；be用was或用were，have,has变had；谓语动词过去式，过去时间做标志；一般动词加-ed，若是特殊得硬记；否定句很简单，主语之后didn’t添；疑问句也不难，did放在主语前；谓语之前有did，谓语动词需还原；动词若是was,were，否定就把not添。①肯定句:主语+am/is/are+-ing②否定句:主语+am/is/are+not+-ing③疑问句:Am/Is/Are+主语+-ing现在进行时表示现在或现阶段正在进行或发生的动作。1)表示说话时正在进行的，目前正在发生的动作。常带有表示目前时刻的时间副词,如：now,atthe(very)moment,forthetimebeing,atpresent,及Look!Listen!...①Look!Thebigbirdisflyingaway.看，那只大鸟正在飞走。②Heiswatchingamovienow.他现在正在看电影。2)表示目前一段时间内正在进行，但说话时可能没有进行的动作。RightnowIamstudyingChinesebydistancelearning.我现在正通过远程教育学习汉语。3)与always,constantly,forever,allthetime等副词连用，表示动作反复或习惯。此时句子常含有说话者的强烈情感在内。表达较强的“责备”或“表扬”之意。①Youarealwayschangingyourmind.你总是主意不定。(太烦人了。)②Heisalwayshelpingothers.他总是帮助别人。(他真是个好人。)①HeisleavingonWednesday.他将于周三离开。②Maryisn’thereatthemoment.Sheiscominglater.玛丽现在不在这儿，她一会儿来。4)对于come,go,leave,arrive,start等表示位置移动的动词常可用进行时态表将来。1.在过去某一时刻正在进行的动作(a)Theywereeatingbreakfastat7:00amyesterday.(b)Iwaswritingaletteratthistimeyesterday.(c)Fiveminutesago,DannywaslookingoutofthewindowandSuzywasreadingabook.过去进行时表示过去某时正在进行的动作或存在的状态。2.在过去某段时间一直在进行的动作(a)From1983to1998,hewasteachingatYale.(b)Theywerebuildingadamlastwinter.(1)基本结构：was/were+verb-ing(2)否定式：was/werenot+verb-ingwasnot=wasn’twerenot=weren’tIwasdoingsomeshopping.Peoplewererunningwildly.Iwasnotreading.Peoplewerenotrunningwildly.(3)疑问句：将was/were调到主语前结构为：Was/Were+主语+verb-ing?回答：Yes,主语+was/were.No,主语+wasnot/wasn’t.werenot/weren’t.Washerunning?Yes,hewas./No,hewasn’t.Weretheyrunning?Yes,theywere./No,theyweren’t.when,while和as这三个词都有“当……时候”的意思。Pastcontinu