1、英语语法系列英语语法系列祈使句祈使句定义1特点2祈使句类型及否定形式34特殊考点祈使句定义视频祈使句是什么样子的呢？Get up now.Make your bed.Stand up.Help!Be happy.School Rules:1.No snacks.2.Be quiet in class.3.Keep the classroom clean and tidy.4.Dont use phones in class.5.Dont be late for school.6.Dont look around.祈使句：是用来表命令、请求、劝告、警告、禁止等的句子。特点祈使句特点：Wear s
2、chool uniform.Be quiet in class.Keep the classroom clean and tidy.Dont use phones in class.Dont be late for school.1.其主语一般为第二人称主语you，但通常省略。2.谓语动词用动词原形。3.其否定是在动词前加dont。练习判断下列句子是否为祈使句1.Stop!2.Its a good idea.3.Dont play football on the road.4.Happy New Year!5.Close the window,please.学习笔记祈使句特点：1.其主语一般为
3、第二人称主语you，但通常省略。2.谓语动词用动词原形。3.其否定在动词前加dont。类型及否定形式 Be quiet!Give me your bottle,please.Take it carefully!Lets take a break!Dont be late again!Dont eat in the classroom.No smoking!No fighting!be 型do 型let 型Dont 型No型肯定形式否定形式1.Be型Be a good student.Be quiet!Be+表语(名词或形容词)+其它成分.Lets have a try.Lets go,go,g
4、o!2.Let型Let+宾语+动词原形+其它成分.3.Do型Listen to me!Do it now!动词原形(+宾语)+其它成分.4.No型No parking!No smoking!No swimming!No+名词或动名词.No photos!Be quiet.Dont be quiet.Leave me alone.Dont leave me alone.Please go away Please dont go away.(1)祈使句否定形式通常以dont开头：“Dont+动词原形+其他”注意1：表示委婉的语气，可以在句首或句尾加上 please.please 加在句尾时，要用逗
5、号与前面的句子隔开。Let him go.Dont let him go.(2)Let型的否定式有两种:Dont+let+宾语+动原+其它.Let+宾语+not+动原+其它.Let him not go.易错点：Lets 缩略词形式变否定时只有一种:Lets +not+动原+其它.变否定Leave me alone.Dont leave me alone.Sit there.Be quiet!Dont sit there.Dont be quiet!Lets do our homework.Lets not do our homework.总结做题步骤！1.判断句型2.判断肯否3.判断类型例题
6、正确答案 CSorry Im late._ tell me the bus broke down again!A.Never toB.NotC.DontD.No做题步骤1.判断句型2.判断肯否3.判断类型例题正确答案 ATom,_ the door.A.openB.opensC.openingD.opened做题步骤1.判断句型2.判断肯否3.判断类型例题正确答案 A_ up,Anna.Its seven thirty.One more minute,Mum.A.GetB.GetsC.GettingD.Got 做题步骤1.判断句型2.判断肯否3.判断类型例题正确答案 A_ on the TV,
7、Jim.Id like to watch the evening news.OK,Dad.A.TurnB.TurnsC.TurningD.To turn做题步骤1.判断句型2.判断肯否3.判断类型学习笔记祈使句,无主语动原开头就可以。表示请求和命令，加上please别客气。要想变成否定句，Dont开头别忘记。1.carefully,Michael!Theres a school ahead.A.DriveB.To driveC.DroveD.Driving2.wake up your sister,Ben.She needs a good sleep.A.DontB.DoesntC.Arent
8、D.Cant练习3.Lets our time.A.not waste B.no wasting C.not to waste D.no waste4.higher,and you will see the house.OK.A.If you standB.To stand C.When you stand D.Stand练习特殊考点Turn on the light,will you?Lets take a break,shall we?1.祈使句的反义疑问句学习笔记（包括Let us）shall we?will you?1.祈使句的反义疑问句Behave yourself,_?Lets g
9、o shopping,_?Let us hand in our homework,_?will youshall wewill you练习2.祈使句+and+简单句Speak louder,and everyone will hear you.“祈使句+and+简单句”句式中，祈使句表示条件，and连接的简单句则表示较好的结果，通常用一般将来时。and所连接的前后分句往往表示先后关系、递进关系。3.祈使句+or+简单句“祈使句+or+简单句”，or后的简单句则表示不好的结果，or译为“否则”。or可用 or else 代替。Study hard,or(else)you will fall behind the others.练习1.Study hard,you will pass the exam.A.soB.orC.butD.and2.Its cold outside.Put on more clothes,you will catch a cold.A.orB.andC.soD.but
