江苏省兴化市昭阳湖初级中学八年级英语上册 Unit 4 Do it yourself Grammar课件1.ppt

GrammarAGuessing GameDont smoke!No smoking!Guessing GameDont play football!Turn left.Guessing GameTurn right!Guessing GameGuessing GameDont park your car!Guessing GameDont eat!Guessing GameDont pick the flowers!Be quiet,please.Dont make any noise.Guessing Game Go upstairs!Guessing GameGuessing Game Go downstairs!Read and observe(观察观察)Turn left.Turn right!Please go upstairs!Go downstairs!Be quiet,please.Dont smoke!Dont play football!Dont park your car!Please dont eat!Dont pick the flowers!1.祈使句祈使句(Imperative Sentence)的概念的概念祈使句表示请求、命令等。它的主语是祈使句表示请求、命令等。它的主语是you（听话人），通常不说出。祈使句肯定（听话人），通常不说出。祈使句肯定结构中的谓语动词一律用动词原形。祈使结构中的谓语动词一律用动词原形。祈使句末用惊叹号或句号。句末用惊叹号或句号。2.祈使句的结构祈使句的结构1)祈使句的肯定结构祈使句的肯定结构Do型（以行为动词原形开头），例如：型（以行为动词原形开头），例如：Sitdown!坐下！坐下！Standup!起立！起立！Be型（以型（以be开头），例如：开头），例如：Bequiet!安静！安静！Becareful！小心！小心！Let型（型（letsbdosth），例如：），例如：Letmetry.让我试试看。让我试试看。Letslookatthemap.让我们看看地图。让我们看看地图。lets是是letus的简略式。的简略式。2)祈使句的否定结构，一律在肯定结构前祈使句的否定结构，一律在肯定结构前加加Donot(Dont)。例如：。例如：Dontgothere,please.请别去那儿。请别去那儿。Dontbelateforclass!上课别迟到！上课别迟到！Dontlethimin.不要让他进来。不要让他进来。有些可以用有些可以用No开头用来表示禁止性的开头用来表示禁止性的祈使句祈使句 如：如：Nosmoking!禁止吸烟禁止吸烟Nofishing!禁止钓鱼禁止钓鱼表示请求、劝告的祈使句还常常在句前表示请求、劝告的祈使句还常常在句前或句末加上或句末加上please,构成句式：构成句式：Please或或,please.以使语气更加缓和或客气。以使语气更加缓和或客气。例如：例如：Pleasestandup.Standup,please.请站起来。请站起来。Pleasehavearest.Havearest,please.请休息一下。请休息一下。祈使句祈使句祈使句祈使句,无主语无主语,只用动词只用动词原形原形就可就可以以.表示请求或命令表示请求或命令,加上加上please表客表客气。气。如果变成否定句，如果变成否定句，Dont开头是规开头是规律。律。MillieisteachingherclassmateshowtoMillieisteachingherclassmateshowtomakecardstohelpthemremembermakecardstohelpthemrememberthingsbetter.Lookatthepicturesandthingsbetter.LookatthepicturesandhelpMilliecompletetheinstruction.helpMilliecompletetheinstruction.Howtomakecards_ out pieces of card with a pair of scissors.Cutcutdrawgivekeeplooktrywrite_ some words or a sentence on each card.Writecutdrawgivekeeplooktrywrite_ a picture about the words or sentence on the other side of the card.Drawcutdrawgivekeeplooktrywrite_ at the picture and _ to remember what is on the other side.LooktrycutdrawgivekeeplooktrywritePlease _(not)up._ trying,and you will find you can remember things better.dontgiveKeepcutdrawgivekeeplooktrywrite中考链接：中考链接：Kate,_yourhomeworkheretomorrow.A.bringB.bringsC.tobringD.bringing有时为了明确的向对方提出请求或发出命有时为了明确的向对方提出请求或发出命令，可加令，可加人物姓名人物姓名，但，但姓名姓名要与句子隔开。要与句子隔开。GrammarBe.g.YoushouldknowalittleaboutDIY.Youshouldnotputsomanybooksontheshelf.Yourwatchisbroken.Youhadbetterbuyanewone.Youhadbetternotbelateforschool.当我们给他人提建议时，可以用当我们给他人提建议时，可以用hadbetter和和should，表示，表示“最好最好”或或“应该应该”做做某事，某事，hadbetter的语气比的语气比should强一些。强一些。Youhadbetterturnoffthelightsbeforeleavingtheclassroom.离开教室前你最好先把灯关了。离开教室前你最好先把灯关了。Youshouldexercisemore.你应该多锻炼。你应该多锻炼。hadbetter(常简略为常简略为dbetter)，是一固定，是一固定词组，后面必须跟词组，后面必须跟动词原形动词原形。构成：。构成：hadbetterdosth.句型。句型。Youdbettergotohospitalatonce.你最好立即去医院看病。你最好立即去医院看病。Tom,youdbettergotheretoday.汤姆，你最好今天去那儿。汤姆，你最好今天去那儿。hadbetter的否定式是将的否定式是将not直接放在直接放在hadbetter的后面的后面(hadbetternotdosth)。Youhadbetternotmissthelastbus.你最好不要错过末班公共汽车。你最好不要错过末班公共汽车。should后面也要跟动词原形，且没有人称后面也要跟动词原形，且没有人称和数的变化。和数的变化。Youshouldstopsmoking.你应该戒烟。你应该戒烟。should的否定式是的否定式是shouldnot/shouldnt。Youshouldntdrinkanddrive.你不应该喝酒后开车。你不应该喝酒后开车。DIYadviceSuzyisgivingDIYadvicetoherSuzyisgivingDIYadvicetoherclassmates.Readtheadvicebelow.Helpclassmates.Readtheadvicebelow.HelpSuzymakesentenceswithSuzymakesentenceswithshould(not)should(not)orhadbetter(not).orhadbetter(not).abeginyourworkwithoutreadingthembjoinaDIYclubtolearnmoreaboutitcbepatientdbuysometolearnmoreaboutiteplaywiththemwhenyoudoDIYjobs1.TherearemanyusefulbooksaboutDIY.Youshould/hadbetterbuysometolearnmoreaboutit.2.DIYisnoteasy.Youshould/hadbetterjoinaDIYclubtolearnmoreaboutit.Youshouldnt/hadbetternotbeginyourworkwithoutreadingthem.3.Instructionsareimportant.Youshould/hadbetterbecarefulwhenyouusethem.4.Scissorscanbedangerous.Youshould/hadbetterbepatient.5.SometimesitlltaketimetodoaDIYjob.on the roadin class1.Jim,_meahand.A.givesB.isgivingC.willgiveD.give2._careful,Jenny!Thereisatreeinfrontofyou.A.AmB./C.BeD.Was3.Lets_ourtime.A.notwasteB.nowastingC.nottowasteD.nowaste4._higher,andyouwillseethehouse.OK.A.IfyoustandB.TostandC.WhenyoustandD.Stand5.Please_doit.A.heB.lethimC.letheD.him6._letanyoneopenthedoor.A.DontB.WillC.NotD.No7.Dontbelateagain.Sorry,_.A.ImayB.ImustC.IwillD.Iwont8.Callmewhenyougethome.OK,_.A.ImustB.IcanC.IwillD.ImayII.完成句子。完成句子。1.你应该在南京换火车。你应该在南京换火车。_changetrainsatNanjing.2.你最好在下雨前回家。你最好在下雨前回家。_beforetherainstarts.3.现在你最好别打棒球了。现在你最好别打棒球了。_baseballnow.4.不要把金鱼放在阳光下。不要把金鱼放在阳光下。_thegoldfishinthesun.YoushouldYoudbettergohomeYouhadbetternotplayDontput1.Trytogiveinstructions.2.Trytouseshould(not)andhadbetter(not)togiveadvice.