七年级英语下册第四单元ppt课件SectionA3a3c.1恢复.ppt

Unit 4 Dont eat in class.教学 课件设计,Unit 4Dont eat in class.,Section A grammar focus3c,What do we have to do at school or in the classroom?What cant we do?Lets look and say some school or class rulers.,教师寄语：No rules,no standards.(没有规矩不成方圆。）,We have to do some reading every morning.,We have to exercise every day.,We have to work hard and help each other.,We have to clean our classroom and keep it clean every day.,.,We have to wear our school ID card.,We have to do homework after school.,Dont fight with others.=We cant fight with others.,Dont arrive late for class.=We cant arrive late for class.,We cant eat in class.,=Dont eat in the classroom.,Dont have long hair for boys.=Boys cant have long hair.,Dont sleep in class.=We cant sleep in class.,.,We cant run in the hallways.,=Dont run in the hallways.,Dont play sports in the classroom or in the hallways.,But we can play it outside.,Dont talk in class.,Dont talk with each other in class.,Stop talking in class.,Dont smoke.Its bad for your health.,Dont play cards at school.,Dont listen to music in the classroom.,Lets talk about our family rules.,Dont waste water.,Turn off the lights when we leave the room.,Pairwork,eat in bed,watch TV late,talk loudly on the phone,get up late on Sundays,play computer games late at night,sing loudly at night,make the bed after getting up,clean the bedroom,A:What do you have to do at home?B:We have toA:What cant you do?B:We cant,Pairwork,情态动词can的用法1)表示能力“会,能”Canyouplaytheguitar?你会弹吉他吗？JimcanspeakChinese.吉姆会说中文。Icandanceandsing.我能唱歌又能跳舞。,2)表示允许、许可,“可以”、“能”Canthestudentsruninthehallway 学生们可以在走廊上跑吗？Wecaneatoutside.我们可以在外面吃东西。,注意:和大部分情态动词一样,can在否定句中,直接在can后加上not,在疑问句中,把can放到主语前面,并且没有人称和数的变化。,Grammar,have to的用法表示客观的必要性：“必须，不得不”，在一定意义上与must可以互换。must没有人称，数和时态的变化。have to有人称，数和时态变化。We have to do homework after school.They must be on time for class.She has to be quiet in the library.Do you have to go to school on time?,注意:have to在否定句中,直接在have to前面加dont,在一般疑问句中,在主语前面加助动词do,并且有人称，数和时态的变化。,肯定祈使句Sit down.Come in.Eat at home.Lets go home.,否定祈使句Dont sit down.Dont come in.Dont eat at home.Dont talk in class.,Grammar,祈使句用来表示请求、命令、叮嘱、号召或者劝告等,主语常是第二人称you,也就是听话者,因而you常省去。祈使句的开头是动词原形。句首或句末加上please，若在句末加please，之前要用逗号隔开。,祈使句的否定形式多以donot(常缩写成dont)开头,再加上动词原形。,1.Sit down.2.Come in.3.Eat at home.,Dont sit down.,Dont come in.,Dont eat at home.,把下列祈使句改成否定句,Practice:,4.Listen to music outside.5.Do your homework at school.,Dont listen to music outside.,Dont do your homework at school.,1.late,dont,for school,arrive 2.music,listen to,in the classroom,dont 3.eat,cant,in the classroom,we,Dont arrive late for school.,Dont listen to music in the classroom.,We cant eat in the classroom.,Form sentences.组句,Dont smoke.No smoking!,Dont take photos.No photos!,Please turn right!,Do you know these?,Dont park here.No parking.,Dont turn left.,Dont talk loudly!,Dont talk!No talking!,Library rules1.Dont talk.2._3._ _4._ _,Dont eat.,Write the rules for the school library.,3a,Dont listen to music.,Dont take photos.,Use the words to make questions about the rules.Then write answers according to your school.,3b,1.Be quite?Q:Does she have to be quite in the library?(she/have to/in the library)A:Yes,she does.2.Eat?Q:_(he/have to/in the dining hall)?A:_,Does he have to eat in the dining hall?,No,he doesnt.He can also eat outside.,3.Listen to music?Q:_(we/can/in the hallways)?A:_ 4.Wear a hat?Q:_(we/can/in the classroom)?A:_,Can we listen to music in the hallways?,Can we wear a hat in the classroom?,No,we cant.,No,we cant.,At my dream school,we dont have to come to school every day.We,The best school rules1.We can eat in class.2.We dont have to come to school every day.3.4.,Groupwork,用所给单词的适当形式填空。1.Dont _(listen)to music in the library.2.Do we have to _(clean)the room every day?3.You cant _(wear)sunglasses in the classroom.4.Please _(arrive)at school on time(准时).5.John is often late for _(class).,class,listen,clean,wear,arrive,将下面的句子改为祈使句，每空一词。1.You can come in._ _,please.2.I can help you._ me _ you.3.You cant eat in class._ _ in class.4.You cant be late for school._ _ late for school.5.You cant take photos here._ photos here.,Come in,Let help,Dont eat,Dont be,No,Summary:,1.情态动词can的用法,2.肯定祈使句和否定祈使句祈使句的常见句型结构,3.通过谈论校规、家规及图书室规则，进一步掌握祈使句的用法，学会拟定规则，逐渐养成自觉遵 守校纪班规的好习惯。,Thank You!,