公开课人教版七年级下册unit4祈使句ppt课件.ppt
,Imperative Sentence,Free talk,What can we do at school or in the classroom?,How to be a good student?,Dont eat in class.,Dont arrive late for class,Dont sleep in class.,Dont draw on the wall.,Dont talk.,Dont play sports in the classroom.,Dont fight.,Dont listen to music in class.,school rules,Dont.,Review,祈使句是表示请求、命令、建议或劝告等的句子。,一.祈使句的概念,Imperative Sentence,二.祈使句的特点,We clean the classroom every day. He usually goes to the library on weekends.,2.谓语动词一律用原形。,1.主语通常为you,但常省略。,3.句末根据语气的强弱用感叹号或句号。,Dont arrive late for class.Sit down, please!,Ms. Chen says,Clean the blackboard.,Stand up!,Sit down, please!,Please open the door.,Turn to Page 21.,Listen to me carefully.,Game: I say, you do,Read and observe(观察),Clean the blackboard.Stand up!Listen to me carefully.Turn to Page 21.Sit down, please!Please open the door.,Dont be late for class.Dont eat in the classroom.Dont run in the hallways.Dont fight.Dont sleep in class.Dont wear a hat in class.,positive,negative,Draw the conclusion (得出结论),祈使句的结构如下： (Please) + Do sth. (Please) + Dont do sth.,肯定：,否定：,注意：有时可在祈使句的句首或句尾加上please，使语气显得客气、有礼貌。如果在句尾加please，应该用逗号与前句隔开。e.g. Go this way, please. 请这边走。 Please go this way.,三.祈使句的形式,1.祈使句的肯定式,(1). 以行为动词原形开头，简称Do型。,e.g. Come here.,(2). 以动词be开头，简称Be型。,e.g. Be quiet, please. Be kind to your classmates.,(3). 以Let开头，简称Let型。,e.g. Lets go! Lets play basketball after school.,“三姐妹”,Turn right!,Turn left!,Be quiet.,Go upstairs！,Go downstairs!,signs,2.祈使句的否定式,(1). Do型和Be型的否定式是在句首加dont。,e.g. Dont sit here. 不要坐在这儿。 Dont be late. 别迟到。,(2). 以let开头的祈使句，其否定式有两种： 一种是直接在句首加dont，另一种是“let + 宾语 + not +动词原形+ (其他)”。,e.g. Dont let him go. 不要让他走。 Lets not go there. 咱们别去那儿。,“三兄弟”,注意：(3)“No+名词/动词-ing形式”表示禁止或规劝，常用于公共场所。e.g. No photos! 禁止拍照！ No swimming！ 禁止游泳！,Guessing Game,Dont park your car.,Dont smoke!,No parking!,No smoking!,Guessing Game,Dont take photos!,Dont swim here!,No photos!,No swimming!,Library RulesDont talk._,Write the rules for the school library.,Dont listen to music.,Dont eat or drink.,Dont take photos.,方法指导：1. 由图示可知都是一些禁止类的祈使句。2. 可知应用祈使句的否定形式。,Task 1:,If you are the headteacher(班主任), discuss and make rules for our class. See which group can say the most class rules.,Rules of Class 11 _ _ _ _ _.,PK,Task 2,Report,Rules of Cass 11 _ _ _ _ _.,Dont be late for class.,Dont eat or drink in the classroom.,Dont run in the hallways.,Wear school uniforms on school days.,Clean the classroom every day.,祈使句的用法,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。,Summary,Be a good student.,Homework,Try to write down at least five sentences about your family rules.,1.Dont waste(浪费)water.,7.Dont read in bed.,2.Make the bed every day.,3.Wash your hands before meals.,4.Turn off the lights before you leave the room.,5.Dont read or eat at the same time.,6.Dont talk loudly on the phone.,My Family Rules,
