七年级时态.pptx

一般现在时一般现在时表示现在经常反复发生的动作、存表示现在经常反复发生的动作、存在的状态或习惯性的动作的时态。在的状态或习惯性的动作的时态。常与一般现在时连用的常与一般现在时连用的词：词：1、every系列系列everydayyearmonthweekmorningafternoonevening、频率副词、频率副词 neverseldomrarelysometimesoftenusuallyalways、次数、次数一次一次once两次两次 twice三次三次 three times一周两次一周两次 twice a week每周四次每周四次 four times a week每周六每周六 on Saturdays每周日每周日 on Sundays1.表示现在的状态表示现在的状态：e.g.e.g.Hes twelve.Hes twelve.Shes at work Shes at work.2.2.表经常或习惯性的动作表经常或习惯性的动作：e.g.e.g.I get up at 6:30 every dayI get up at 6:30 every day.He reads English every morningHe reads English every morning.常用的状语：常用的状语：often,sometimes,usually,every day 等。等。3.3表主语具备的性格和能力等表主语具备的性格和能力等：e.g.e.g.She likes noodles.She likes noodles.They speak French They speak French.4.表示不受时间限制的普遍真理和自然规律表示不受时间限制的普遍真理和自然规律：e.g.e.g.Two and four is six.Two and four is six.The moon goes around the earth.The moon goes around the earth.一般现在时的构成一般现在时的构成一、系动词be的一般现在时二、情态动词的一般现在时三、实义行为）动词的一般现在时一、系动词be的一般现在时1、构成、构成：主语+be+其他2、be包括哪些？isamare3、什么时候用is？什么时候用am？什么时候用are？取决于主语是单数还是复数Thegirlismyfriend.否定句的构成主语+be+not+其他isnot=amnot=arenot=isntmnotarent情态动词的一般现在时情态动词的一般现在时构成主语+情态动词+动词原形+其他ShecanspeakEnglish.注意：情态动词后的动词一定要用原形原形Eg:Theyshould(应该)beright.试比较：Theyareright.ShespeaksEnglish.否定句的构成主语+情态动词+not+动词原形+其他cannot=couldnot=mustnot=wouldnot=willnot=shouldnot=maynot=cantcouldntmustntwouldntwontshouldntmaynot行为动词的一般现在时行为动词的一般现在时构成主语+行为动词+其他Theseboyslikeplayingfootball.ThegirlreadsEnglisheverymorning.注意：当主语为第三人称单数时，行为动词要加s或者es什么时候加s，什么时候加es呢？1、大多数动词在词尾直接加s，如readreadslooklooksplayplays2、以辅音字母加y结尾的动词，要先将y变为i，再加es如：flyfliescarrycarriesstudystudies26个字母中除AEIOU五个元音字母外，其余21个都是辅音字母3、以“s,x,ch,sh”结尾的，在词尾加“es”，发音为iz如：teachteachesiz;watchwatchesizbox-boxes4、以“o”结尾的动词，加“es”，读z如：gogoeszdodoeszComplete the sentences.Use the simple present tense of the verbs in brackets1.My father_(listen)to the radio every day.2.Mike_(study)in a middle school.3.She_(take)Eddie for a walk after supper.4.He_(wash)clothes with his hands.5.Simon _(pass)the ball to Daniel.6.Miss Li_(teach)Chinese.7.Look at the animal,it _ four legs.listenstakesstudieswashespassesteacheshas8否定句的构成主语+助动词（do/does）+not+行为动词原形原形其他Theseboysdont（donot）likeplayingfootball.Thegirldoesnt（doesnot）readEnglisheverymorning.什么时候用助动词do，什么时候用助动词does呢？取决于主语ThegirlreadsEnglisheverymorning.Theseboyslikeplayingfootball.当主语为复数时，用助动词do构成否定当主语为单数时，用助动词does构成否定注意：dont 和 doesnt 之后动词一定要用原形Change the following sentences after the models.1.I like red.(green)2.They like apples.(oranges)3.We take a bus to school every day.(walk to school)Model 1:I like fish.(meat)I dont like meat.Model 2.He likes reading.(writing)He doesnt like writing.I dont like green.They dont like orange.We dont walk to school every day.104.His brother plays football after school.(play basketball)5.It looks like a cat.(hat)6.She has a dog at home.(a cat)Model 1:I like fish.(meat)I dont like meat.Model 2.He likes reading.(writing)He doesnt like writing.His brother doesnt play basketball.It doesnt look like a hat.She doesnt have a cat at home.11Complete the sentencesUse the proper verb forms in brackets1.Jordan _(play)basketball.He _(not play)football.2.I _(go)swimming on Sunday.But I_(not go)shopping.3.My cousins _(enjoy)computer games.But they _(not enjoy)ball games.4.You _(like)fish.But he _(not like)fish.playsdoesnt playgodont goenjoydont enjoylikedoesnt like12一般疑问句一般说来，英语中共有四种问句，分别是：1、一般疑问句2、特殊疑问句3、选择疑问句4、反意义疑问句今天我们来学习一般疑问句。那么，什么是一般疑问句呢？我们一起来听听一般疑问句的自白：第一家族：含be动词或情态动词 的一般疑问句Yes，itis.No，itisnt.1、IsthisyourEnglishbook？注意：在回答时，主语要用相应的代词代替be+主语+其它部分？肯定回答：Yes，主语+be否定回答：No，主语+be+notbe主语主语其他其他含含be或情态动词一般疑问句的改写或情态动词一般疑问句的改写秘诀：一调二改三问号一调：即把句中的be或情态动词调到主语前；二改：改换主语称谓，即将句中的主语Imymineweourours等第一人称分别改为相应的第二人称youyouryours等；三问号：句末的句号改为问号IamanEnglishteacher.AreyouanEnglishteacher?WecanspeakEnglishCanyouspeakEnglish？含含be的一般疑问句、否定句改写口诀的一般疑问句、否定句改写口诀我 用am，你用are，is连着她他它单数名词用is，复数名词全用are变疑问往前提，句末问号莫丢弃，变否定更容易，be后not莫忘记，疑问否定任你变，句首大写莫迟疑！第二家族：行为动词一般疑问句的第二家族：行为动词一般疑问句的构成构成问句：DoyourparentslikeEnglish？肯答：Yes，theydo.否答：No，theydont.助动词+主语+动词原形原形+其它？肯定回答用“Yes,主语+do/does.”否定回答用“No,主语+donot/doesnot.”助动词也常用缩写形式，主要有dont，doesnt第二家族：含行为动词（或称为实义动词）一般疑问句的改写秘诀：一加二改三问号秘诀：一加二改三问号一加：即在句首加助动词Do或Does；二改：1、把谓语动词改为原形；2、改换主语称谓（同第一家组）；三问号：句末的句号改为问号。句型转换1.Mr.Green comes from Shanghai.(改为一般疑问句改为一般疑问句)2.Millie lives in a flat in Beijing.(改为否定句改为否定句)Does Mr.Green come from Shanghai?Millie doesnt live in a flat in Beijing.3.Daniel enjoys playing computer games.(改为一般疑问句并做肯定回答改为一般疑问句并做肯定回答)Does Daniel enjoy playing computer games?Yes,he does.some、any一般说来，some用于肯定句中，any用于否定句和疑问句中。改疑问句或否定句时原句里的改疑问句或否定句时，原句里的some要改成要改成anyTherearesomebooksonthedesk.(改为否定句)Therearentanybooksonthedesk.Arethereanybooksonthedesk?Whynotbuysomeapples?为什么不买些苹果呢?Wouldyoulikesomemoreapples?你要不要再吃点苹果?注意：在表示建议或希望得到肯定回答时，some可用于疑问句，不用变成any.and or变否定句时，and要变成orThereissomeairandwateronthemoon.Thereisntanyairorwateronthemoon.Hehassomebrothersandsisters.Hedoesnthaveanybrothersorsisters.在否定句当中，too要改为eitherIlikeeatingapples,too.Idontlikeeatingapples,either.现在进行时基本结构现在进行时基本结构主语主语+be+be动词动词+动词现在分词动词现在分词动词现在分词:动词原型+ingreading,drinking,eating,meetingthinking特殊变化:1.以e结尾，去e加ingwriting,making2.重读闭音节要双写结尾的辅音字母加ingsitting swimming putting runningWhat is he doing?He is drinking water(now).Is he drinking water(now)?Yes,he is.What is she doing?She is cleaning the house.Is she doing her homework?No,she isnt.What are they doing?They are running.Are they write ing?No,they arent.知识结构构成意义常用时间标志动词的过去式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。yesterdaymorning/afternoonlastnight/week/year/Sunday/in1990twoyears/weeksagoGrammar一般过去时动词过去式的变化不规则变化(需逐个记忆)：dodidcomecamegowentsitsathavehadcancouldtaketookgivegaveputputgetgotswimswameatatetelltoldsleepsleptseesawwearworelielaydrinkdrankfindfoundwritewrotecancouldwillwouldsingsangreadreaddodidgowentreadreadseesawgetgotsitsathave/hashadam/iswas在本单元中出现的不规则动词有以下几个：III.写出下列单词的过去式talkmilkam/isaregoridefeedtakedoseetalkedwaswentfeddidmilkedwererodetooksaw含be动词的过去时句式肯定句主语+was/were+表语.否定句主语+was/werenot+表语.(wasnt/werent)一般疑问句Was/Were+主语+表语?肯定回答Yes,代词+was/were.否定回答No,代词+wasnt/werent.I_ateacherlastyear.I_ateacherlastyear._youateacherlastyear?Yes,I_./No,I_.waswasntWerewaswasnt肯定句主语+动词过去式+宾语.I_(watch)TVlastnight.否定句主语+didnt+动词原形+宾语.I_(notwatch)TVlastnight.一般疑问句Did+主语+动词原形+宾语?肯定回答Yes,代词+did.否定回答No,代词+didnt._you_(watch)TVlastnight?Yes,I_./No,I_.特殊疑问句特殊疑问词+did+主语+动原?What_you_(do)lastnight?含实义动词的过去时句式watcheddidntwatchDidwatchdiddidntdiddodid,does一出现,动词都要变原形动词一般过去时，表示过去发生事；be用was或用were,have,has变had；谓语动词过去式，过去时间作标志；一般动词加-ed，若是特殊得硬记。否定句很简单，主语之后didnt添；疑问句也不难，did放在主语前；如果谓语之前有did，谓语动词需还原；动词若是was,were,否定就把not添。1.Hevisitedhisfriendslastnight.2.Tomtooksomephotostwodaysago.3.Wewentforawalkyesterday.4.IstudiedinBeijingin1999.5.Theyplayedsocceryesterdaymorning.1.Hevisitedhisfriendslastnight.否定句Hedidntvisithisfriendslastnight.疑问句：Didhevisithisfriendslastnight?肯定回答：Yes,hedid.否定回答：No,hedidnt.对划线提问：Whatdidhedolastnight?对划线提问：Whendidhevisithisfriends?2.Tomtooksomephotostwodaysago.否定句:疑问句：肯定回答：否定回答:划线提问：划线提问：Tomdidnttakeanyphotostwodaysago.DidTomtakeanyphotostwodaysago?Yes,hedid.No,hedidnt.WhatdidTomdotwodaysago?WhendidTomtakeanyphotos?3.We_(go)forawalkyesterday.4.I_(study)inBeijingin1999.wentstudied否定句疑问句肯定回答否定回答划线提问划线提问Wedidntgoforawalkyesterday.Didyougoforawalkyesterday?Yes,wedid.No,wedidnt.Whatdidyoudoyesterday?Whendidyougoforawalk?一般现在时:句中be动词用am/is/are,实义 动词用三单或原形,表示现在的状态或 现在经常反复发生的动作和行为。时标:alwaysusuallyoftensometimesnevereverydayonSundays现在进行时:句中动词用am/is/are+doing形式,表示现在正在进行的动作。时标:nowatthemomentlistenlookdosth.at+具体时刻Its+具体时刻一般过去时:句中be动词用was/were,实义动 词用动词过去式,表示过去某个时间发生的 动作或存在的状态也可表示过去反复出现 的动作(与频度副词usually,often等连用)Iwasnineyearsoldin2008.(过去某时间的状态)IwenttoShanghailastyear.(过去某时间发生的动作)Ioftendidmyhomeworkatschool.(过去反复出现的动作)我我天天天天打篮球。打篮球。我我正在正在打篮球。打篮球。我我昨天昨天打篮球。打篮球。Ieveryday.Inow.Iyesterday.playbasketballamplayingbasketballplayedbasketball一般过去时一般过去时一般现在时一般现在时现在进行时现在进行时