Unit13Weretryingtosavetheearth!SectionAGrammarFocus4c课件人教版九年级英语全册

Unit13

Wearetryingtosavetheearth!SectionAGrammarFocus~4c九年级全一册

人教版通过本课的学习，学生能够：复习现在进行时/usedto/被动语态/现在完成时/情态动词。LearningGoalsHowmanytenses(时态)havewelearned?Whatarethey?WarmingUp一般现在时、一般过去时、一般将来时现在进行时、过去进行时现在完成时、过去完成时GrammarFocus.被动语态结构一般时进行时完成时时态现在am/is/are+过去分词过去was/were+过去分词将来will/shallbe+过去分词过去将来would/shouldbe+过去分词现在am/is/arebeing+过去分词过去was/werebeing+过去分词现在have/hasbeen+过去分词过去hadbeen+过去分词将来will/shallhavebeen+过去分词过去将来would/shouldhavebeen+过去分词被动语态：Passivevoice定义：表示主语是动作的承受者，即行为动作的对象的一种语态。结构：be+过去分词e.g.Anewschoolwasbuiltlastyear.Ourclassroomiscleanedeveryday.Let’sreview.被动语态结构不同结构的被动语态肯定句式被动语态的基本结构是：主语+be动词+过去分词+其他。否定句式被动语态的基本结构是：主语+be动词+not+过去分词+其他。一般疑问句式被动语态的基本结构是：Be动词+主语+过去分词+其他。特殊疑问句被动语态的基本结构是：特殊疑问词+be动词+主语+过去分词+其他。get+过去分词这个要强调动作的发生，基本结构是：主语+get+过去分词+其他。有情态动词的被动语态基本结构是：主语+情态动词+be+过去分词+其他。usedtodosth.表示过去常常做某事,而现在往往不了,后接动词原形。beusedtodoingsth.

表示习惯于做某事e.g.Iusedtogetupatsixo’clock.Joeisusedtodrinkingacupofcoffeeeverymorning.usedtodo与beusedtodoing被动语态：Passivevoice定义：表示主语是动作的承受者结构：be+过去分词不同时态的被动语态结构(以动词do为例):一般现在时:am/is/are+done一般过去时:was/were+done一般将来时:willbe/is(/am/are)goingtobe+done含情态动词:can/may/must...+be+done

1.

我们不能在教室里吃东西。2.首先你必须完成作业。3.他现在不可能在家。4.她一定知道这个问题的答案。Youmustfinishyourhomeworkfirst.Hecan’tbeathomenow.

Shemustknowtheanswertothisquestion.Wecan’teatintheclassroom.TranslatethefollowingChineseintoEnglish.练一练We’retryingtosavetheearth.Theriverusedtobesoclean.

Theairisbadlypolluted.Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.Weshouldhelpsavethesharks.Readthechartandtellwhatgrammarpointswearegoingtoreviewtoday.PresentationPresentprogressiveusedtoPassivevoicePresentperfectModalverbs现在进行时：时态：Let’sreview!

什么时候使用现在进行时？

现在进行时的标志性词语有哪些？现在分词的构成规则有哪些？现在完成时基本结构基本用法标志词have/has+过去分词1.过去发生或已经完成的动作对现在造成影响或结果2.从过去某一时间开始一直延续到现在并还可能继续延续下去的动作already,yet,ever,never,just,before,once,twice,recently,sofar,for+时间段，since

+时间点/从句。现在完成时:Presentperfectbeusedto(doing)sth.

习惯于(做)某事e.g.I’m

usedtowalkingtoschoolnow.

我现在习惯步行去学校。

ThecityishotandwetandIhavebeenusedtoit.

这座城市又热又潮湿，而我已经习惯了这里。现在进行时基本结构基本用法标志词be(am/is/are)+动词-ing1.表示现在正在进行或发生的动作。2.表示现阶段或当前一段时间之内

正在进行的动作。now、look、listen、thesedays等现在进行时Let’sreview.被动语态表意功能讲话者不知道动作的执行者，不必或不便说出动作的执行者（这时可省掉by引导的短语）借助被动的动作突出动作的承受者为了更好的安排句子，用于修辞当动作的执行者是无生命的事物时，需用被动语态用法有些动词习惯被动语态，如born,report,say等用括号内所给动词的适当形式填空。1.TheSecondarySchoolEntranceExams_______(hold)inJune.2.Astrangenoise__________(hear)byhismotherlastnight.3.Awideroad_____________(build)betweenthetwovillagesbythosepeoplenextyear.isheldwasheardwillbebuilt1.Lilyismyclassmate.We______eachothersinceshecametoourschool.

A.know

B.knew

C.haveknown

D.willknow

C2.I_____inthecitysinceIleftschool.A.live

B.willlive

C.wasliving

D.havelived

D3.Inthepastfewyears,manyschools______thewaysofdoingmorningexercises.A.change

B.changes

C.willchange

D.havechanged

D考点一：考查表示“能力”的情态动词1.—________yourAustralianfriendeatwithchopsticks?—Yes,butshecan’tusethemwell.A.ShouldB.NeedC.CanD.Must2.Theworkistoohardforus.We_______finishitontime.A.can’tB.mustn’tC.shouldn’tD.needn’t情态动词——考点

usedto结构usedto意为“过去常常做某事”，指的是过去的习惯性动作，目的在于与现在形成对照。它的疑问式是：Did＋主语＋usetodosth．否定式是：主语＋didn'tuse．或疑问式：Used＋主语＋tosth．否定式应当是usednotto.Exercise1.她过去常常周末和朋友闲逛。She_____________withfriendsonweekends.2.他习惯于每晚睡得很晚。

He____________________________atnight.3.Kenusedtobeafraidofdogs.(改为一般疑问句)______________________________?usedtohangoutisusedtosleepinglate/stayingupDidKenusedtobeafraidofdogsJoe:_____youever_____(take)partinan

environmentalproject?Ken:Yes,Ihave.I_____(help)withaClean-Up

Daylastyear.Itwas_________(consider)

thebiggestclean-upprojectthiscityever

________(have).

Fillintheblankswiththecorrectformsoftheverbsinbrackets.4aHavetakenhelpedconsideredhadhadexercising用所给词的适当形式完成句子1.Allthewildanimalsshould______________(protect)verywell.2.—AreJimandMikeintheclassroom?—No.They____________(play)tennisoverthere.3.Therubbishinthepark__________(clean)upeveryday.4.—Howlong________you_________(work)intheOceanPark?—Since10yearsago.5.Manystudentsusedto_____(be)tiredbecauseofthoseafter-schoolclasses.beprotectedareplayinghave workedbeiscleanedJoe:_____youever_____(take)partinan

environmentalproject?Ken:Yes,Ihave.I_____(help)withaClean-Up

Daylastyear.Itwas_________(consider)

thebiggestclean-upprojectthiscityever

________(have).

Fillintheblankswiththecorrectformsoftheverbsinbrackets.4cHavetakenhelpedconsideredhadhadJoe:Howmanypeople______(take)part?Ken:I_____(think)morethan1,000people_____(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscity

is_____(try)toimprove

the

environment.Ken:Yes,wecan'taffortto

_____(wait)anylongertotakeaction!tookthinkcametryingwaitExercise一、用所给词的适当形式填空1.Theoldmanused_____(be)ateacher.2.Weshould_____(clean)theroomeveryday.3.Look!Tom____