1、五年级下册英语Unit-6-Work-quietly!Lesson-2-学会祈使句人教PEPWarm upDum-de-dum.Work quietly!Zoom!Keep your desk clean!Sorry.知识讲解这两个是什么句子？1.Work quietly!安静学习！2.Keep your desk clean!保持书桌干净！这两个句子都是_。祈使句知识讲解学习祈使句祈使句表示请求或命令别人做某事或不要做某事。肯定祈使句:以动词原形开头。Open the door.关门。（表命令）Pass me the sugar,please.请把糖递给我。（表请求）Have a good
2、day.祝你度过愉快的一天。（表祝福）祈使句被省略的主语是谁？知识讲解学习祈使句Let祈使句（表建议）Let+代词宾格+do sth.Lets have dinner together.让我们一起吃晚饭。Let me help you.让我来帮你。知识讲解学习祈使句表示礼貌经常会用please(请)，可放在句首或句末。放在句末前要加逗号。请靠右。Keep to the right,please.Please keep to the right.祈使句除用谓语动词表示外，还可用名词、副词、动词短语等表示。如：Help!Patience!Quickly!Hands up!知识讲解学习祈使句否定的祈
3、使句:Dont+动词原形开头。Dont drink the juice.别喝这个果汁。否定祈使句有时还可以转换成“No+名词/动词-ing”的形式，如：Dont take photos.No photos.Dont smoke.No smoking.知识讲解祈使句小口诀祈使句，祈使句，请求、命令或建议。主语是you常省去，动词原形开头记。否定形式要注意，句首要把Dont加。要讲客气用please，句首句末没关系。知识讲解Lets talk.Quiet,please!知识讲解Lets talk.No eating!知识讲解Lets talk.Stop!知识讲解Lets talk.知识讲解Lets
4、 talk.知识讲解Lets talk.知识讲解Lets talk.Dont touch!知识讲解Lets talk.知识讲解Lets talk.知识讲解Lets practice.用括号内所给动词的适当形式填空。1.please _(open)the door.2._(not be)careless.3.No _(talk)!4.Please _(not watch)TV so much,Jim!5.Be _(care)!知识讲解Lets practice.将下列句子改为祈使句。You should stay at home today._You should not talk loudly._See you
