Unit8SectionA3a-3cGrammarFocus课件：2021-2022学年人教版八年级上册英语.pptx

《Unit8SectionA3a-3cGrammarFocus课件：2021-2022学年人教版八年级上册英语.pptx》由会员分享，可在线阅读，更多相关《Unit8SectionA3a-3cGrammarFocus课件：2021-2022学年人教版八年级上册英语.pptx（17页珍藏版）》请在淘文阁 - 分享文档赚钱的网站上搜索。

1、Unit 8How do you make a banana milk shake?Section A 3a-3c Grammar FocusTeaching Aims：1.掌握祈使句的用法2.掌握可数名词和不可数名词的考点3.how many和how much的辨析Teaching key & difficult points:1. 祈使句句型的掌握2. 可数名词的变化和不可数名词用法3.how many和how much的辨析Turn left!Turn right!No smoking!Dont play football!Be careful!Dont eat!Lead-in 祈使句的

2、祈使句的定义定义祈使句祈使句 : 表示表示_等句子。等句子。 祈使句的运用祈使句的运用: 在祈使句中，一般在祈使句中，一般以以_开头。主语是开头。主语是_,通常被通常被_。句首或句尾句首或句尾常常加加“_”,表示表示“请请”。在。在句尾句尾时时前用逗号前用逗号与前面句子隔开与前面句子隔开。一、祈使句一、祈使句动词原形动词原形you省略省略please请求、命令、建议请求、命令、建议Discussion 句型句型1肯定形式（肯定形式（动词原形开头动词原形开头）A）be 型（型（Be+表语）表语） eg.Be careful！ Be quiet, please!B）do 型（型（实义动词原形实义动

3、词原形+其他）其他） C）let 型（型（Let+宾语宾语+动词原形动词原形+其他）其他） 2否定否定形式（形式（Dont+动词原形开头动词原形开头）A）be 型（型（Dont be+表语）表语）B）do 型（型（Dont+动词原形动词原形+其他）其他）C）let 型（型（Dont+let+宾语宾语+动词原形动词原形+其他）其他）（Let+宾语宾语+not+动词原形动词原形+其他）其他） eg. Come in, please! Stand up! eg. Lets go shopping!.eg. Dont be late! Dont be noisy!eg. Dont sleep now!

4、 Dont talk in class! Lets not go out!eg. Dont let them leave. 特殊用法(了解)1.No+doing/名词：用来表示“禁止”的祈使句。 eg.No smoking！禁止吸烟！ No parking! 禁止停车！ No fishing！禁止钓鱼！ No photos! 禁止照相！2. Do+动词原形：用来加强语气 eg. Do write to me soon. 一定要快点给我写信啊。 Do let me do it by myself. 请一定要让我自己处理。Task 1 1. _(keep) quiet in the library

5、!2. Dont _(swim) in the river, please!3. Please dont _(be) late for school tomorrow!4. Lets _(not make) any noise, the baby is sleeping.5. 对你的朋友好点！对你的朋友好点！_ your friends!6. 确保拼尽全力！确保拼尽全力！ Make sure _!7. 走之前别忘了关门！走之前别忘了关门！_ before you leave!8. 让我们去远足吧！让我们去远足吧！_!Keepswimbenot makeBe friendly toDont fo

6、rget to close the doorLets go hikingto try your best/ you try your best二、可数名词二、可数名词1.可数名词的单数：前常加不定冠词可数名词的单数：前常加不定冠词a/ an 或定冠词或定冠词the(特指特指)eg. a pilot 一名飞行员一名飞行员 an apartment 一所公寓一所公寓 the man with a hat 那个戴帽子的男人那个戴帽子的男人2. 可数名词变复数：规则变化可数名词变复数：规则变化 & 不规则变化不规则变化规则变化：规则变化：A)一般情况直接+s:boys students photos(

7、无生命无生命)B)以s, x, sh, ch等结尾加-es: buses boxes dishes watchesC)以辅音+y结尾改y为i加-es: babies factories cities D)以f(e)结尾,改f(e)为ves: leaves knives wives wolvesE)以o结尾(有生命)加-es: potatoes tomatoes heroesTask 2 将下列名词变为复数：将下列名词变为复数： 1. hen _2. diary _ 3. activity _4. difference _ 5. duck _6. dictionary _ 7. bus _8.

8、potato _ 9. piano _10.leaf _ 11. life _12. wish _hensactivitiesducksbusespianoslivesdiariesdifferencesdictionariespotatoesleaveswishes不规则变化：不规则变化：A)三人：三人：B)四动物：四动物：C)两器官：两器官：D)形单意复：形单意复：people policeman-men woman- women child-childrensheep-sheep deer-deer fish-fish(单复同形单复同形) mouse-micefoot-feet toot

9、h-teethTask 3 Task 3 根据句意，用括号中所给单词的适当形式填空。1. I have lots of _(tomato) here.2. The _(child) are playing games on the playground now.3. Tony is a _(sheep)and there are many _(sheep) over there.4. He has ten _(sandwich).5. There are many English _(dictionary).tomatoeschildrensheepsheepsandwichesdiction

10、aries3.修饰可数名词复数的词：修饰可数名词复数的词： many类：类：many/ so many/too many/ how many few类：类：quite a few/ a few/ few/ fewer/ fewest some/ a lot of/ lots ofTask 41. The _careful you are, the _ mistakes you will make. A. more; little B. more; less C. more; few D. more; fewer2. Ladies and gentlemen, I have _ words to

11、 say. A. few B. a fewC. little D. a little3. Im new here. So I have _ friends here. A. few B. a fewC. little D. a little4. There are _ oranges in the fridge, could you buy some in the shop? A. few B. a fewC. little D. a little5. _ hours do you watch TV every week? - _. A. How much; Nothing B. How ma

12、ny; No one C. How many; None D. How many; Nobody DBAAC4.可数名词做主语，谓语动词单复数与主语保持一致可数名词做主语，谓语动词单复数与主语保持一致: eg. There are some people on the playground. There is an apple in the basket. The boy hardly ever does exercise every week.Task 51. The _(leaf) on the tree turn yellow.2. There are a few _(child) pl

13、aying football outside.3. Their _(idea) sound interesting.4. The girl never _(sing)in the classroom.5. People _(play)an important part in saving the earth.leaveschildrenideassingsplay 三、不可数名词：三、不可数名词：1.常见的不可数名词：常见的不可数名词：金金(gold)木木(wood)水水(water)火火(fire)土土(earth) 沙沙(sand)肉肉(meat)食食(food)米米(rice)纸纸(pa

14、per)牛肉牛肉(beef)鸡肉鸡肉(chicken)拌米饭拌米饭(rice) 鱼鱼(fish)汤汤(soup)味道鲜味道鲜 果汁果汁(juice)牛奶牛奶(milk)要常喝要常喝 面包面包(bread)更是不能缺更是不能缺抽象类：抽象类：money, pollution, information, news, knowledge(知识知识) 学科类：学科类：math, geography, physics2.不可数名词无复数，也不能用不可数名词无复数，也不能用a/an修饰，但前面可加修饰，但前面可加the： eg. the water/the money 不可数名词的量：不可数名词的量：基数

15、词+计量单位+of+不可数名词： eg. a piece of bread/ paper/ news two cups of water/ milkTask 51. _一袋米一袋米2. _ 一杯咖啡一杯咖啡3. _ 两张纸两张纸4. _ 三瓶橙汁三瓶橙汁5. _ 九片面包九片面包6. _ 四杯牛奶四杯牛奶a bag of ricea cup of coffeetwo pieces of paperthree bottles of orangenine pieces of breadfour cups of milk3.修饰可数名词复数的词：修饰可数名词复数的词： much类类: much/ s

16、o much/ too much/ how much little类：类：a little/ little/ less/ least some/ a lot of/ lots ofTask 61. -Do you have any water? -No, I have _ in my glass. A.few B. little C. a little D. a few2. How can you make a trip with so _ money? A. few B. little C. a few D. a little3. There is _ milk in the fridge,

17、 so we will go to the shop and buy some. A. few B. little C. a few D. a little4. Now people can learn _ informationon from the Internet. A. a few B. a lot C. much D. many5. -_ yogurt do you need? - We need _of yogurt. A. How many; two cup B. How much; two cup C. How many; two cups D. How much; two c

18、ups BBBCD当堂检测当堂检测1. _ honey do you need? One spoon. A. How manyBHow oftenC. How longDHow much2. _ your umbrella, or youll catch a cold on such a rainy day. A. TakeB. To takeC. TakingD. Takes3.-_ hours do you watch TV every week? -Less than 2 hours. A. How muchB. How manyC. How longD. How often4._ wa

19、ke up your sister, Ben. She needs a good sleep. A. CantB. DoesntC. ArentD. Dont5. Lets _ our time. A. not to wasteB. no wastingC. not wasteD. no wasteDABDC6.They got much _ from those new books. A. ideasB. photosC. informationD. stories7. Dont forget to post the letter! _ A. Yes, I doB. No, I dontC. Yes, I willD. All right, I wont8.Every weekend she has _ homework to do. A. manyB. quite a fewC. muchD. so many9. We need two pieces of bread. _ _ _ of bread do you need?10. We want two teaspoons of honey. _ _ _ do you want?How many piecesHow much honeyCDC