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同学们好,很高兴有机会和大家一起学习7B第六单元的相关知识。 本单元主要学习常见宠物的名称和特征,学会并能运用形容词来描述动物的外表、特征、性格等,同时学会使用恰当的情态动词来发布指令。 我准备从重点语法、典型例题、语法拓展、阅读技巧、写作技巧五个方面和同学们进行交流。教师画面教师画面 下面我们一起来学习本单元的重点语法、典型例题和语法拓展知识。教师画面教师画面 祈使句的用法祈使句的用法重点语法重点语法 表示请求、命令、建议等的句子叫做祈使句。表示请求、命令、建议等的句子叫做祈使句。它的主语是它的主语是you,通常省略。祈使句的谓语动通常省略。祈使句的谓语动词都用动词原形。词都用动词原形。 1.肯定祈使句肯定祈使句Be sure to write a letter to me. 一定给我写信。一定给我写信。Stop talking ! 停止说话!停止说话! 为了表达客气的语气,常在句首或句尾加为了表达客气的语气,常在句首或句尾加pleasePlease come to school earlier tomorrow.Write down the new words,please.祈使句的用法祈使句的用法重点语法重点语法2. 否定祈使句否定祈使句祈使句的否定形式是在句首加上祈使句的否定形式是在句首加上dont,有时加有时加 never.Dont worry about your son. 别为你的儿子担心。别为你的儿子担心。Dont talk in class. 不要在课堂上说话。不要在课堂上说话。 Never do that again! 千万别再那样做了!千万别再那样做了!祈使句的用法祈使句的用法重点语法重点语法3. Let 开头的祈使句开头的祈使句 Let me have a try. 让我试试。让我试试。 Let him do it. 让他做。让他做。 Lets start work at once. 让我们马上开始工作。让我们马上开始工作。Lets not go fishing. 我们别去钓鱼。我们别去钓鱼。注意注意 祈使句的用法祈使句的用法重点语法重点语法 4.由动词原形引导的祈使句或由动词原形引导的祈使句或let us引导的祈使句,引导的祈使句, 其反意疑问句一般用其反意疑问句一般用will you. Go to the cinema now, will you? Let us go to the farewell party, will you?Lets 引导的祈使句,其反意疑问句一般用引导的祈使句,其反意疑问句一般用shall we.Lets clean the rabbit hutch, shall we? Let me引导的祈使句,其反意疑问句一般用引导的祈使句,其反意疑问句一般用will you 或或may I.Let me have a try, will you?Let me drive the car for you, may I?注意注意祈使句的用法祈使句的用法重点语法重点语法在否定祈使句中,其反意疑问句只能用在否定祈使句中,其反意疑问句只能用will you.Dont forget to write a letter to me,will you?别忘记给我写信,好吗?别忘记给我写信,好吗?为使祈使句听起来比较委婉、客气,还可以用为使祈使句听起来比较委婉、客气,还可以用would you,wont you,can you,could you,cant you.Look at the blackboard ,wont you? 看黑板,好吗?看黑板,好吗?Wait for me at the door, can you? 在门口等我,好吗?在门口等我,好吗? 情态动词情态动词 should 的用法的用法重点语法重点语法1. 表示义务、责任,意为表示义务、责任,意为“应该、必须应该、必须”, 与与must替换。替换。 We should / must learn English well.我们应该学好英语。我们应该学好英语。 We should finish our homework on time. 我们必须按时完成家庭作业。我们必须按时完成家庭作业。情态动词情态动词 should 的用法的用法重点语法重点语法 Should表示劝告、建议、命令等,意表示劝告、建议、命令等,意为为“应该应该”,等于,等于ought to. 其否定形式为其否定形式为ought not to YOU should wash your hands first.=You ought to wash your hands first.你应该先洗手。你应该先洗手。 注意注意 情态动词情态动词 should 的用法的用法重点语法重点语法2. 用于第一人称疑问句中询问对方意愿,用于第一人称疑问句中询问对方意愿, 语气委婉。语气委婉。 What should we do now?我们现在应该做什么?我们现在应该做什么? 情态动词情态动词 must 的用法的用法重点语法重点语法1. Must表示说话人的命令和要求,意为表示说话人的命令和要求,意为“必须、应该必须、应该”。只有现在时形式,否定式。只有现在时形式,否定式是是must not/ mustnt ,意为意为“不准,禁止不准,禁止” We must do everything carefully. 我们必须认真做每件事。我们必须认真做每件事。 You must not cross the road when the light is red. 红灯时,你一定不要过马路。红灯时,你一定不要过马路。 情态动词情态动词 must 的用法的用法重点语法重点语法2. 以以must 开头的问句,其否定回答要用开头的问句,其否定回答要用needt 或或 dont have to 代替。代替。- Must I do it at once?我必须马上做这件事吗?我必须马上做这件事吗?- Yes, you must. 是的,你必须。是的,你必须。- No, you neednt / No, you dont have to 不,你不必。不,你不必。 情态动词情态动词 must 的用法的用法重点语法重点语法3. 表示肯定性的猜测,意为表示肯定性的猜测,意为“一定、大概一定、大概”,多用于肯定句。多用于肯定句。 The light is on in the room. Mr Green must be at home. 房间的灯亮着,格林先生房间的灯亮着,格林先生 一定在家。一定在家。It must belong to Mary。它一定是属于玛丽的。它一定是属于玛丽的。 其否定形式是其否定形式是cant (不可能)(不可能) He cant be tired. 他不可能累他不可能累/ 他肯定不累。他肯定不累。 情态动词情态动词 should 和和must的用法总结的用法总结重点语法重点语法1. 情态动词有一定的词义,但词义不完全,情态动词有一定的词义,但词义不完全, 须与动词原形连用须与动词原形连用 2. 情态动词没有人称和数的变化情态动词没有人称和数的变化 3. 疑问句直接把情态动词提前,否定句疑问句直接把情态动词提前,否定句 在情态动词后面加在情态动词后面加not 情态动词用法歌诀:情态动词用法歌诀:情态动词两要点,情态动词两要点,动词原形跟后面,动词原形跟后面,说话语气较委婉。说话语气较委婉。 can表表“能力能力”may“许可许可”, must“责任责任”或或“义务义务”,否定回答否定回答neednt换。换。 “需要需要”need,dare“敢敢”, should“应该应该”would“愿愿”。 语法拓展语法拓展 情态动词情态动词 ought to的用法的用法语法拓展语法拓展ought to : 应当,应该,可与应当,应该,可与should 交换交换使用,其否定形式为使用,其否定形式为 ought not to . You ought to / should do eye exercises every day . 你应当天天做眼保健操。你应当天天做眼保健操。 情态动词情态动词 must 的用法的用法语法拓展语法拓展 must和和have to 的区别是的区别是:must表示说话人的主观表示说话人的主观意愿意愿,而而have to 则表示客观要求则表示客观要求,意为意为不得不不得不. 情态动词中有一类是具有情态动词特征的情态动词中有一类是具有情态动词特征的词,如词,如have to,但它有人称、数的变化。,但它有人称、数的变化。 You must tell us what you have seen. 你必须告诉我们你所看到的东西。你必须告诉我们你所看到的东西。 He has to walk home because the bus has just left. 他不得不走回家,因为汽车刚离开。他不得不走回家,因为汽车刚离开。注意注意 祈使句的反意疑问句祈使句的反意疑问句 Put the book over there, _ ? Dont leave your pet alone, _ ? Let us walk the dog, _? Lets clean the fish tank, _ ?will youwill you shall wewill you 1.- Can I go fishing with you,Dad? - No,you _.You _stay at home and do your homework first. A. wont;may B. cant must C. shouldnt;ought D. neednt; should2.- Do you know whose dictionary it is? - It _be Li Meis. Toms name is on it. A. cant B. mustt C. shouldnt D. neednt3.- I cant stop smoking ,doctor. - For your health,Im afraid you _. A.can B.cant C.must D.mustnt 4. You _give them too much food. A.mustnt B.must C.wont D. 1. _ sleep too late . Its bad for your health . A. Do B. Not C. Dont D. dont 2. _ parking ! A. Dont B. Not C. No D. Do3. Tom, _ late again . A. doesnt B. isnt C. wont D. dont be4. You _ smoke . You are only 14 and it isnt allowed . A. mustnt B. dont have to C. neednt D. wont5. - Must I wait for you now ? - No , you _ . You may be back in half an hour . A. shouldnt B. mustnt C. dont have to D. cantCCDAC6. -Must I return the book tomorrow morning? -No, you_. You _ keep it for a day. A. mustnt, may B. mustnt, must C. neednt, can D. neednt, must7. -May I go surfing alone this afternoon, Dad? -No, you _. It is dangerous. A. may not B. cant C. neednt D. dont8. Alice has been in China for several years. She _ be a big girl now. A. need B. must C. can D. may 接下来我们一起来学习阅读技巧和写作技巧。教师画面教师画面教师画面教师画面 One day, a middle school teacher comes into the classroom and says to his students , “Today I want you to write about yesterdays football match. Im going to take your exercise books home with me, Now please begin.” The students all take out their pens and exercise books and begin to write. A boy called Tom thinks hard. But he doesnt write down a word. Five minutes later, he finishes. He stands up and looks at the teacher, The teacher asks, What is the matter, Tom? I have finished, sir. says the boy. Well, give me your book. The boy goes to the teacher and gives him the exercise book. The teacher opens it and reads, rain, no match. 根据短文内容根据短文内容,选择正确答案:选择正确答案:( )1. The teacher asks the students to 。 A. read the text B. have a lesson C. do their homework D. write about a match( )2. The teacher is going to read the students exercise books 。 A. in class B. at home C. at school D. in classroom( )3. Tom thinks hard 。 A. and writes down many things B. and writes down Rain, no match C. but write a word D. but doesnt write down a word( )4. Tom is 。 A. the third B. the last C. the first D. the second( )5. Tom writes about the match. A. nothing B. a lot C. a little D. muchDBBCA 写作技巧写作技巧1. 细读题目,抓住要点细读题目,抓住要点 (标题,每段的中心句标题,每段的中心句)2. 理解大意,初写句子理解大意,初写句子3. 认真答文,掌握细节认真答文,掌握细节4. 复读全文,核查错误复读全文,核查错误 请以请以My Favourite Animal为题,写一篇为题,写一篇70词左右的短文。词左右的短文。1. 我最喜欢的动物是大象,它是陆地上最大的动物。我最喜欢的动物是大象,它是陆地上最大的动物。2. 世界上有两种大象世界上有两种大象:非洲象和印度象。非洲象比印非洲象和印度象。非洲象比印度象大,并且有大得多的耳朵。度象大,并且有大得多的耳朵。3. 大象必须吃很多,因为它们是如此大。它们能活大象必须吃很多,因为它们是如此大。它们能活60-70年。年。4. 大象用脚尖走路,它们能安静地移动并很容易在大象用脚尖走路,它们能安静地移动并很容易在泥中行走。泥中行走。5. 大象帮助人们搬运重物,我们要爱护它们。大象帮助人们搬运重物,我们要爱护它们。 My Favourite Animal My favourite animal is the elephant. Elephants are the biggest animals on land.There are two kinds of elephants: African elephants and Indian elephants. African elephants are larger than Indian elephants, and they have much larger ears. Elephants have to eat a lot because they are so big. They can live up to 6070 years. Elephants walk on tiptoe.They can move quietly and walk in the mud easily. They help people carry the heavy things. We should love them and protect them.教师画面教师画面总结:通过对本单元知识的学习,同学们又有了新的收获,请认真完成课后练习,及时巩固所学知识。
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