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1、初中英语动词时态讲解 Go for it!九年级 动词的构成nbe 动词n助动词n情态动词n系动词n实义动词be 动词nbe动词的几种形式nam is arenwas werenbeingnBeenbe动词的用法n与名词、数词、形容词、介词连用nI am a doctor.nHe is ten.nThey are tired.nThe cat is under the table.be动词的用法nThere be 句型n用于不可数名词和可数名词单数之前 There is a pen on the desk. There is some water in the glass.n用于复数名词之前
2、There are some sheep in the hill.n用于一般将来时 There is going to be a film in our school next Sunday.n用于一般过去时 There was a book on the desk yesterday. 注意：请根据时态和句中的名词选择适当形式。be动词的用法nBe 动词在时态中的运用n在现在进行时中We are talking.n在过去进行时中We were talking at this time yesterday.助动词n助动词的几种形式ndo /dont nDoes/ doesntnDid/ did
3、ntnwill /wontnhave havent /has hasnt/had hadnt助动词的用法n对句子进行否定和疑问nDo you get up early every day?nI didnt have lunch yesterday.nWill you be back soon?nHe hasnt finished the work yet.n在反意疑问句中nHe works in a school, doesnt he?nShe has never been there,has she?n在倒装句中nThey helped the farmers , so did we.nI
4、wont visit the famous singer,neither will he.情态动词n共同特点 n情态动词后面跟动词原型 n无论否定、疑问、倒装句、或反意疑问句都用情 态动词 n只有时态变化，没有人称变化情态动词n解释ncan / could 在表示请求允许的时候两者和互换， could比can 语气更委婉。 Can I help you? Could you open the window? 在表示有能力作某事时，could是can的过去式。 I can swim. I could swim at the age of five.情态动词n解释nMust /have to Mu
5、st 表示主观意愿，否定句用Mustnt，否定回答 用neednt I must go now. You mustnt play in the street. Must I clean the room now? No,you neednt. have to表示客观条件的限制的“不得不”，它有时态 和人称变化，需要助动词来否定和疑问。 I dont have to carry the big box. He had to wash his clothes.情态动词n解释nMay 表示请求别人允许。 May I use your bike? 表示可能性。 He may be a teacher.
6、 He may live in this building.系动词n我们所学过的系动词是nGet，turn，be come，be动词n感观动词look，sound，smell，taste， feeln系动词只和形容词连用，构成系表结构nI feel hungry.nThe day gets longer and longer.nHe looked happy.实义动词n实义动词指的是有具体行为意思的动词。n实义动词在句中可以做谓语动词和非谓语 动词。n做谓语动词的用法动词会有四种形式：单三，现在分词， 过去式，过去分词实义动词注意：掌握四种形式的变化规律nHe works in the off
7、ice.nWe are dancing together.nI caught a cold last week.nShe has watered the flower.实义动词n做非谓语动词的用法（指出现在谓语动词 之后的动词，它受前面谓语动词的限制）动词会有三种形式：n原型(do)n动名词(doing)n不定式(to do)实义动词n用原型：nlet sb.donmake sb.donhelp sb.(to)donhad better do 实义动词n用动名词：nlike doingnenjoy doingnfinish doingn介词之后用动名词 be good at doing wha
8、t about doing thank you for doing 实义动词n用不定式：nwant to dondecide to donplan to donwould like to donlearn to dontell sb.( not)to donask sb.(not) to do实义动词n注意下列词不同形式的不同用法:remember doing/to doforget doing/to dostop doing/to dogo on doing/to do时态n一般现在时n一般将来时n一般过去时n现在进行时n现在完成时n过去进行时n过去将来时n过去完成时一般现在时表示一般情况和
9、经常发生的动作。时间状语为every day 或 every 引导的时间状语often，always，usually一般现在时动词碰到第三人称单数时，要加 “s”work - works辅音字母和“y”结尾的词，如carry - carries以s、x、ch、sh结尾的加“es”，如wash - washesgo - goesdo - doeshave - has一般现在时例句He goes to school on foot every day.We often have supper at home.She doesnt do her work every Sunday.现在进行时表示正在
10、发生的动作。时间状语：now /Look /Listen由be动词动词ing构成动词变化加ingclean - cleaning以不发音“e”结尾的，去掉字母“e”，再加ing make - making重读闭音节的单词，双写最后一个字母，再加ing swim - swimming现在进行时n例句nThe boys are playing now.nLook! They are planting trees.nListen! He is singing.一般将来时表示将来发生的动作。时间状语： next 引导的词组tomorrow 引导的词组the day after tomorrow动词变化
11、：will + 动词原型例句I will visit you tomorrow.He wont come back next week.一般过去时n指过去发生的动作或事情n时间状语：nyesterday 引导的词组nago 引导的词组nlast 引导的词组nthe day before yesterday一般过去时n动词变化：动词变成过去式，动词加 “ed”nPlay - played辅音字母和“y”结尾的词，如carry - carried重读闭音节的单词，双写最后一个字母，再 加ed stop - stopped不规则动词见书后动词表一般过去时n例句nHe bought a book ye
12、sterday.nI watched a match last week.nHe left here two days ago.现在完成时n动词变化 动词变成过去分词加ednPlay - played辅音字母和“y”结尾的词，如carry - carried重读闭音节的单词，双写最后一个字母，再 加ed stop - stopped不规则动词见书后动词表n动词由have（has）+ 过去分词 构成现在完成时n表示动作已经完成nHe has left .nI have already had a rest.n表示动作不仅已经完成，还要持续（在这个用 法当中，动词要用延续性动词，与for引导的一
13、段时间和since引导的短语连用）nHe has been away for two days. nI have already taught in this school since 1990.nThe bird has been dead for a month.nWe have made lots of friends since we came here. 过去进行时n指在过去的某一个时间正在发生的动作。n时间状语nat this time yesterdaynat five oclock yesterday afternoonn动词由be动词+动词ing形式构成n例句 He was
14、watching TV at this time yesterday.过去将来时n指对过去的某一个时间来讲，将要发生的 动作。n动词由would+动词原型构成。n例句 He would go to the park the next day. He said he would work hard next term.过去完成时n指对过去的某一个时间来讲，已经发生的 动作。n动词由had+过去分词构成。n例句 she had borrowed a book before she went to the park. We had learned many new words by the end of last term.
