三种时态总结及讲解课件.ppt

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1、 三种时态三种时态 1、一般现在时一般现在时 2、现在进行时、现在进行时 3、一般将来时、一般将来时一般现在时态一般现在时态 一般现在时一般现在时1 1、含义、含义：表示经常发生的动作或存：表示经常发生的动作或存 在的状态在的状态 2 2、常与、常与every day,on Sundays,sometimes,often，usually,always,等连用等连用 、一般现在时的、一般现在时的肯定句肯定句结构结构：1、主语、主语+be（am/is/are)+其他其他Eg:I am a student.He is a boy.They are my teachers.2、主语（非三单）、主语（非

2、三单）+动词原形动词原形+其他其他 I have a meeting on Sundays.They visit their parents once a month.注注:主语主语(三单三单)+动词动词(第三人称单数形第三人称单数形式式)+其他其他She likes it very much.She usually goes to school at 7 oclock every morning.动词第三人称单数形式动词第三人称单数形式 在动词后在动词后+s在以在以s,x,ch,sh,o结尾的动词结尾的动词+es以辅音字母以辅音字母+y结尾的动词，结尾的动词，先变先变y 为为i，再加，再加e

3、s 特殊特殊 have-has 等等 helpguessflymake leavefixswimknow playclosegostudygetread bring watch写出下列动词的第三人称单数形式写出下列动词的第三人称单数形式carry do washvisit exercise enjoy jump havesiesessessssessiesssshasesssesssesiess、一般现在时的一般现在时的否定式1.Be 动词的否定式动词的否定式:be+notI am a teacher.You are a workerShe is a doctorWe are friends.

4、Im not a teacherYou arent a workerShe isnt a doctor.We arent friends.is not=isntare not=arent 否定句2.当当主主语语是是第第三三人人称称单单数数时时，它它与与助助动动词词Does有有关关，但但是是动动词词谓谓语语一一定定要要恢恢复复为为原原形形。当当主主语语是是其其他他人人称称时时，它它与与助动词助动词Do有关。有关。I like English.She likes it very much.We go to work by bike.I dont like English.She doesnt li

5、ke it very much.We dont go to work by bike.否定句概念：用概念：用 yes 或或 no 来回答的疑问句叫做一般疑问句。来回答的疑问句叫做一般疑问句。一般疑问句句首的第一个词一般读得比较重。一般疑问句句首的第一个词一般读得比较重。III一般疑问句一般疑问句1.对于对于be 动词，疑问句要求把动词，疑问句要求把be 提前，提前，第一人称变成第二人称。第一人称变成第二人称。疑疑问问句句I am a teacher.Are you a teacher?You are a worker.Are you a worker?He is a student.Is he

6、 a student?We are friends.Are you friends?2.对于实义动词，疑问句要求是：对于实义动词，疑问句要求是：当主语是第三人称单数时，句子当主语是第三人称单数时，句子前面加前面加does，并把动词恢复原形；，并把动词恢复原形；当主语是其他人称时，句前加当主语是其他人称时，句前加do，第一人称，第一人称(I/we)换第二人换第二人称称(you)。I often go there.You like the music.He goes to work by bus.We/You/They like it.Do you often go there?Do you li

7、ke the music.?Does he go to work by bus?Do you/they like it?1.He has a meeting on Sundays.2.He goes to school at seven in the morning.3.My father and mother go out for lunch on Sundays.4.We do our homework after school.把下列句子改为一般疑问句把下列句子改为一般疑问句Does he have a meeting on Sundays?Does he go to school at

8、 seven in the morning?Do your father and mother go out for lunch on Sundays?Do you do your homework after school?exercise把下列句子改为否定句1.My father has an egg for breakfast.2.Li Lei does his homework after school.3.We do our homework at home.4.They have a meeting every morning.My father doesnt have an eg

9、g for breakfast.Li Lei doesnt do his homework after school.We dont do our homework at home.They dont have a meeting every morning.1.We often _(play)in the playground.2.He _(get)up at six oclock.3._ you _(brush)your teeth every morning?4.What _ he usually_(do)after school?5.Danny_(study)English,Chine

10、se,Maths,Science and Art at school.6.Mike sometimes _(go)to the park with his sister.7.She _ (watch)TV with his parents every evening.8._ Mike _(read)English every day?用所给动词的正确形式及助动词填空playgetsDo brushdoes dostudiesgoeswatchesDoes read2、一般将来时The Future Simple Tense一般将来时一般将来时1、含义：、含义：相对于讲话时间相对于讲话时间将要发

11、生将要发生的动作或情况的动作或情况2.时间状语时间状语（判断标准）：（判断标准）：tomorrow 明天明天next week 下周下周the day after tomorrow 后天后天soon 不久不久in the future 在将来在将来in+一段时间一段时间 多久之后才多久之后才.The Future Simple Tense 1.be going to+动词原动词原形形2.will+动词原形动词原形(I/we shall)3.be+v-ing4.一般现在时表将来一般现在时表将来结结构构be going to+v原形原形表示打算做某事表示打算做某事表示现在已经有迹象表明将要发生某事

12、。表示现在已经有迹象表明将要发生某事。-What _do this evening?-I am going to do my lessons.看那些乌云要下雨了看那些乌云要下雨了.Loot at the dark clouds.It _rain.is going toare you going to1.What are you going to do this afternoon?I _the cinema with some friends.Exercise:am going to2.My younger brother is going to _ 15 years old next yea

13、r.A.am B.is C.are D.be 用括号内动词的适当形式填空用括号内动词的适当形式填空 1.The library is too old.They _(build)a new one.2.It _(be)2014 next year.3.-What _you _(be)when you grow up?-Im going to be an actor.4.-Are you going to have a welcome party?-Yes,we _(be)are going to buildis going to beare going to beare二句型转换二句型转换 1.

14、The girls are going to take acting lessons.（改为否定句）（改为否定句）The girls _ _ to take acting lessons.2.The students have a school trip in spring.（用（用next week 代替代替 in spring）The students _ a school trip next week.3.Theyre going to meet outside the school gate.(对划线部分提问对划线部分提问)_ _ they going to meet?arent go

15、ing toare going to haveWhere are3、现在进行时、现在进行时一一.现在现在进行进行时的定义时的定义:现在进行时是表示现现在进行时是表示现在、说话瞬间或当前一直在、说话瞬间或当前一直正在做着的动作正在做着的动作.Eg:1、Jenny is watching TVnow.2、I am writing.二、现在进行时常见的标志：二、现在进行时常见的标志：（1）一般句中用到表示）一般句中用到表示“在现在在现在”的的时间状语，如：时间状语，如：now,right now,at the moment 或或Its+几点钟几点钟”句型，常判断句型，常判断用现在进行时。用现在进行时

16、。Eg:Lets go fast.Mr.Wu is waiting for us now.Its six oclock.The children are playing basketball.(2)句中用到句中用到“Listen！”“Look!”“Keep quiet”“Dont make noise!”等提示语时，表明等提示语时，表明说话间另一个动作正在进行，这时，说话间另一个动作正在进行，这时，句子也要用现在进行时。句子也要用现在进行时。Eg:Keep quiet!The teachers are talking in the office.She readisingnow.Listen!

17、The bird is singing三、动词三、动词-ing形式的变化规则：形式的变化规则：1、一般在词尾直接加、一般在词尾直接加ing.如：如：doing，singing2、以不发音的字母、以不发音的字母e结尾的，先去结尾的，先去e,再加再加ing。如：。如：making，diving3、以辅音、以辅音+元音元音+辅音的重读音节，辅音的重读音节，双写末尾的辅音字母，再加双写末尾的辅音字母，再加ing。如：。如：stopping，beginning.四、现在进行时的谓语结构四、现在进行时的谓语结构:1、现在进行时的谓语结构为现在进行时的谓语结构为:am/is/are+现在分词现在分词.Am/

18、is/are 在现在在现在进行时句子谓语结构中作助动词用，无进行时句子谓语结构中作助动词用，无词义。词义。Am/is/are的选择运用由句子的主的选择运用由句子的主语人称或数决定。语人称或数决定。A:I am watching TV at home.B:Dave is cleaning the floor.C:The students are seeing a movie.2.将现在进行的肯定句变为否定句时，将现在进行的肯定句变为否定句时，在在be动词后面加上动词后面加上not.Eg:Steve is talking to his teacher.The children are eating

19、 some apples at my home.-Steve isnt talking to his teacher.-The children arent eating any apples at my home.3、将一个现在进行时的肯定句变为一般疑问句、将一个现在进行时的肯定句变为一般疑问句时，将句中的时，将句中的is或或are提到句首提到句首。Eg:Steve is talking to his teacher.I am singing.-Is Steve talking to his teacher?-Are you singing?1.Look.Lucy is_ a new bik

20、e today.A.jumping B.running C.riding D takeing2.The children _ football.A.is playing B.are playing 2.C.play the D.play a3.They _TV in the evening.They do their homework.A.are watching B.cant watching C.dont watch D.dont watchingCBC4.Listen!She_ in the classroom.A.is singingB.sing C.to sing D.is sing

21、5._are you eating?Im eating _ meat.A.What,some B.Which,any C.Where,not D.What,aAA6.Is she _ something?A.eat B.eating C.eatting D.eats 7.Look!The children_ basketball on the playground.A.plays B.played C.is playing D.are playing BD8.Jack and Ketty_ in the lake.Lets join them,shall we?A.swim B.have sw

22、um C.swamD.are swimming9.Its six in the afternoon.The Greens_ lunch together.A.has B.are having C.have hadD.had hadDB综合练习综合练习1.My parents (watch)TV now.2.Listen,someone (sing)in the 3.classroom.4.3.He usually _(get)up at six oclock.5.4._ Mike _(read)English every day?5.What _ you _（do）tomorrow？I _ （see）my grandparents are watchingissinginggetsDoesreadareare you going to doam going to see