Unit4语法专项课件一般现在时被动语态冀教版八年级英语下册

教学课件冀教英语八年级下册Unit4语法专项——一般现在时被动语态

全解精讲+分层练习

学习目标掌握一般现在时被动语态的定义与适用场景熟记肯定、否定、疑问三种基本句式熟练完成主动语态与被动语态的句式转换正确书写规则与不规则动词过去分词能在各类题型中准确使用被动语态主动语态与被动语态区别主动语态：主语是动作的执行者被动语态：主语是动作的承受者被动语态核心：强调动作承受者，不突出执行者一般现在时被动：表示经常性、习惯性、客观事实的被动常用时间标志：often,always,everyday,usually一般现在时被动语态—肯定句基本结构：主语+am/is/are+动词过去分词主语为I时，搭配am主语为单数名词/代词时，搭配is主语为复数名词/代词时，搭配are例句：Englishisspokeninmanycountries.一般现在时被动语态—否定句基本结构：主语+am/is/are+not+动词过去分词常见缩写形式：isn’t,aren’t否定含义表示动作不被执行例句：Litterisnotallowedinpublicplaces.例句：Thesebooksaren’ttakenoutofthelibrary.一般现在时被动语态—一般疑问句基本结构：Am/Is/Are+主语+动词过去分词回答用Yes或No开头，简短作答即可例句：IsricegrowninthesouthofChina?肯定回答：Yes,itis.否定回答：No,itisn’t.一般现在时被动语态—特殊疑问句基本结构：疑问词+am/is/are+主语+动词过去分词常用疑问词：what,where,how,who用于对动作的对象、地点、方式等提问例句：Wherearethesecarsmade?例句：Howisthiswordused?be动词选用口诀I用am，you用are单数名词用is复数名词全用are变疑问，be动词提前变否定，be动词后加not被动语态核心用法一不知道动作的执行者是谁动作执行者不重要，无需说明多用于客观事实、普遍现象描述例句：Stampsareusedforsendingletters.例句：ThiskindofglassismadeinChina.被动语态核心用法二用于正式、客观的书面表达常见场景：规则、通知、标志、说明语气更礼貌、严谨、正式例句：Silenceiskeptinthelibrary.例句：Patientsaretakengoodcareofinhospital.主动变被动—转换步骤主动句宾语变为被动句主语根据新主语选择am/is/are主动句动词变为过去分词可选择加by+原主语表示执行者时间、地点、方式状语保持不变主动变被动—例句

主动句：Wecleantheclassroomeveryday.被动句：Theclassroomiscleanedbyuseveryday.主动句：PeoplegrowteainHangzhou.被动句：TeaisgrowninHangzhou.主动句：Shehelpstheoldman.被动句：Theoldmanishelpedbyher.规则动词过去分词变化（一）一般情况：动词末尾直接加-edfollow→followed

clean→cleaned

play→played

help→helped规则动词过去分词变化（二）以字母e结尾的动词，直接加-dlike→liked

live→lived

use→used

love→loved规则动词过去分词变化（三）辅音字母+y结尾，变y为i再加-edstudy→studiedworry→worriedtry→triedcarry→carried规则动词过去分词变化（四）重读闭音节、末尾单一辅音字母，双写末尾辅音字母，再加-edstop→stopped

plan→planned

drop→dropped不规则动词过去分词（必背）make→made

do→done

say→said常见易错点（一）主语是物品、无法发出动作，必须用被动错误表达：Theroomcleanseveryday.正确表达：Theroomiscleanedeveryday.错误表达：Housesbuildquickly.正确表达：Housesarebuiltquickly.常见易错点（二）被动语态不可缺少am/is/are错误表达：Thedooropenedbyhim.正确表达：Thedoorisopenedbyhim.错误表达：Letterssenteverymorning.正确表达：Lettersaresenteverymorning.常见易错点（三）必须使用正确的过去分词形式错误：isspeak/arewrite正确：isspoken/arewritten错误：istake/aresay正确：istaken/aresaid拓展—情态动词+被动语态结构：情态动词+be+动词过去分词常用情态动词：must,should,can,may多用于规则、要求、建议等语气例句：Rulesmustbefollowedeverywhere.例句：Homeworkshouldbefinishedontime.单项选择

1.English______allovertheworld.

A.speakB.speaksC.isspoken2.Theflowers______everymorning.

A.waterB.arewateredC.watered3.______thiscup______inChina?

A.Is;madeB.Does;makeC.Are;made4.Noise______inthehospital.

A.isnotallowedB.doesn’tallowC.notallow5.Rice______inthesouthofChina.A.growsB.aregrownC.isgrownCBAAC6.Thesebooks______outofthelibrary.A.can’ttakeB.can’tbetakenC.nottake7.Knives______forcuttingthings.A.isusedB.areusedC.use8.______arethesebikesmade?A.WhatB.WhereC.Who9.Theclassroom______everyday.A.cleansB.iscleanedC.cleaned10.Cats______tocatchmice.A.useB.areusedC.usedBBBBB句型转换—主动变被动

Peopleusewoodtomaketables.Wecleantheclassroomeveryday.Shewaterstheflowerseverymorning.TheyspeakFrenchinFrance.Hefinisheshomeworkontime.Woodisusedtomaketables.Theclassroomiscleanedbyuseveryday.Theflowersarewateredbyhereverymorning.FrenchisspokenbytheminFrance.Homeworkisfinishedbyhimontime.句型转换—主动变被动

Weshouldprotecttheenvironment.Peopledon’tallowsmokinginpublic.Teachersoftenaskustoreadmore.Theymakecarsinthisfactory.Doyoucleanyourroomeveryweek?Theenvironmentshouldbeprotectedbyus.Smokingisn’tallowedinpublicbypeople.Weareoftenaskedtoreadmorebyteachers.Carsaremadebytheminthisfactory.Isyourroomcleanedbyyoueveryweek?动词适当形式填空

Glass________________(make)fromsand.Trees________________(plant)inMarcheveryyear.English________________(learn)bymanypeople.Thedoor________________(open)everymorning.Thesemagazines________________(notread)bystudents.ismadeareplantedislearnedisopenedaren’tread动词适当形式填空___________computers___________(use)everyday?Thework___________(finish)ontime.Pens___________(use)forwriting.Thissong___________(like)bymoststudents.Vegetables___________(sell)inthemarket.Areusedisfinishedareusedislikedaresold判断句子正误并改正Woodareusedtomakepaper.Theclassroomcleaneveryday.IsthesebikesmadeinShanghai?FrencharespokeninFrance.Knivesisusedforcutting.

错误

改为：Woodisusedtomakepaper.

错误

改为：Theclassroomiscleanedeveryday.

错误

改为：ArethesebikesmadeinShanghai?

错误

改为：FrenchisspokeninFrance.

错误

改为：Knivesareusedforcutting.完形填空Rulesareveryimportantinourlife.Mostrules1.____________(make)tokeepussafe.Signs2.____________(put)inpublicplaces.Rules3.____________(follow)byeveryone.Litter4.____________(notallow)anywhere.Quiet