Unit 4 Let's Go and Play Lesson 20 Traffic Lights祈使句用法

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1、Unit4Let'sGoandPlayLesson20TrafficLights祈使句ReadtogetherLeft,right,left,left,right,rightLeft,left,right,right,go,go,go!Left,left,right,right,go,turnaround,go,go,go!祈使句:是表示请求、命令、建议等句子，通常说话的对象是第二人称you，you常被省略。肯定式：以动词原形开头否定式：don’t+动词原形Becareful!Openyourb

2、ooks.Letmehaveatry.Don’topenthedoor.Nosmoking!I.大哥VV(代表行为动词原形)+宾语+其它成分祈使句王国卫队②Helpyourselftosomefish.随便吃点鱼吧。①Closethewindow.关上窗户。II.二哥BBe+表语(名词/形容词等)+其它成分祈使句王国卫队①Beagoodstudent!做个好学生！②Bequiet!安静！III.三哥LLet+宾语(通常为第一或第三人称宾格)+动词原形+其它成分祈使句王国卫队①Let’sgohom

3、e!咱们回家吧！②Letherin.让她进来。IV.四哥PPlease+动词短语（please也可放在句尾，其前加逗号）祈使句王国卫队Pleasesitdown.=Sitdown,please.请坐。祈使句王国卫队五哥DDon’t+动词原形+其它成分六弟NNo+名词或动名词（是日常生活中常见的警示语）①Don’tbelate.不要迟到。②Don’treadinthesun.别在阳光下看书。①Nophotos!禁止拍照！②Nosmoking！禁止吸烟!牢记，牢记，再牢记Don’ttalkwithy

4、ourmouthfull.Don’tplaywithfood.Don’twastefood!Let’ssingThat’sall,seeyounexttime!