Unit 4 课时3 Understanding ideas -Grammar （课件）英语新教材外研版八年级下册

Unit 4 Helping out Understanding ideas Grammar 课型：语法课 通过观察和分析例句，归纳情态动词must, may, can在语境中表达推测、可能和许可的基本规则。(学习理解） 01 运用所学情态动词完成填空题和对话，与同伴讨论身边需要帮助的人及具体帮助方式。（应用实践） 02 结合真实生活情境，综合运用情态动词和目标功能句型，策划并简要描述一个具体的助人行动计划。（迁移创新） 03 学习目标 Lead in 01 02 03 04 Summary 05 Language points 06 Exercises 07 Homework 08 Presentation Practice Production Contents What grammar rule can you notice? Lead in Lead in What grammar rule can you notice? 情态动词（Modal Verbs） can, may, might, must… Read the sentences from the reading passage and summarise the grammar rules. 5 (a)Well, crayons may carry viruses and spread diseases. (b)It can be boring to wait for X-rays and treatments. (c) There must be something for me to do. Presentation What can you find? may表示可能性（可能，也许） can表示可能性（有时会…）或能力（能够） must表示肯定的推测（一定，肯定） 情态动词 1.当我们想表达可能发生某事以及某人可能做某事时，可以用may/might表示。 Presentation 情态动词(2) 例如: Bring a map because you may want to travel around. 带张地图，因为你可能想四处转转。 There may be a few showers, so bring an umbrella with you. 可能会有阵雨，所以随身带把伞吧。 2.might与may没有太大的区别，形式上might是may的过去式，但在表示现在或将来的可能情况时，might表示的可能性比may表示的可能性要小一些。 Presentation 情态动词(2) 例如: Take your swimming clothes because you might want to go swimming in the sea. 带上游泳衣吧，说不定你想到海里游泳呢。 3.情态动词can和could除了表示"能够，可以"等意义之外，还可以表示对现在或将来的推测，意为“会，可能。但can表示推测时，往往用于否定句和疑问句。用于疑问句时，can比could表示的可能性要大;用于否定句时cannot(can't)表示“不可能。” Presentation 情态动词(2) 例如: You can't be serious! 你不是认真的吧! 4.could则可用于肯定句、否定句和疑问句。在以下例句中，can和could均表示可能: Presentation 情态动词(2) 例如: He could be in pain.他可能很疼。 That could be harmful! 那可能有害! Can/could this be true?这有可能是真的吗? 5.情态动词must也可以表示猜测，意为“一定，肯定”通常只用于肯定句。 Presentation 情态动词(2) 例如: Betty, you must know! Betty，你肯定知道! 小总结（推测语气强弱） must (肯定) > may (可能) > can't (不可能) 请仔细对比下面一组句子: -Who sent the present? Can it be your brother? 是谁送来的礼物啊?会是你哥哥吗?(询问可能性) -It must be your brother. I saw him in your room just now. 肯定是你哥哥，我刚才看见他在你的房间里。 (语气强烈，表示非常肯定) -It can't be my brother. He is still in France. 不可能是我哥哥，他还在法国呢。(表示不可能) Presentation 情态动词(2) Complete the sentences with must, may or can. 6 1 You __________ be thirsty now after the long run. Here is a bottle of water for you. 2 You didn't bring an umbrella? Take mine. It _________ rain later. 3 Here is my notebook. You ___________return it after the exam. Practice must may can/must 长途奔跑后，你一定渴了。 可能下雨。表示可能性 can (你可以用我的笔记本。表示许可。) must (考完必须还我。表示要求。) Look at the pictures and complete the dialogues with the correct form of the modal verbs. 7 A: Look at that man! It 1_______ be hard for him to carry all the boxes! B: Let's give him a hand. Practice must Dialogue 1 A: That woman looks lost. She 2 _______need help. B: Yes. We 3________go and ask her. Dialogue 2 can must Look at the pictures and complete the dialogues with the correct form of the modal verbs. 7 A: Is that Lily over there? B: It 4________be her. She has the flu and has to stay at home. A: That's too bad. The lesson today is really important. B: Don't worry. We 5_________share our notes with her. Practice can’t Dialogue 3 can Work in pairs. Discuss things to do to help people around you. Use the words and expressions from the reading passage and the Useful expressions to help you. 8 Who needs your help? Production Why do they need help? What can you do to help? Useful expressions ... may find it a challenge to ...... need a helping hand.. Perhaps l can / could... .... to help... get through.... There must be something for me to do, such as... Work in pairs. Discuss things to do to help people around you. Use the words and expressions from the reading passage and the Useful expressions to help you. 8 Who needs your help? Production I think my classmate Tom needs help. Why do they need help? Production What can you do to help? He is not good at English. He finds it very difficult. He needs help. Perhaps I can study with him. I can lend him my book or help him practice words. Production A: We should talk about offering a helping hand to people around us. Who do you think needs help? B: I think our classmate Tom might need some support. A: Why do you say that? B: English is not easy for him. He may find it a challenge to keep up with the lessons. I believe he needs a helping hand to feel more confident. A: I see. Perhaps we can offer to study with him twice a week after school. That might really help him get through this semester successfully. B: Good idea. There must be something for me to do, such as helping him practice pronunciation or explaining grammar points he doesn’t understand. A: That sounds great. Let’s make a plan and ask him what he needs most. Example 1.那太糟糕了 2.别担心。 3.撑过去；渡过难关 4.例如 5. 让我们帮…一把 6.帮助，援手 7.带雨伞 8.做某事很有挑战性 常用短语 That’s too bad. Don‘t worry. get through such as Let’s give (sb.) a hand. a helping hand bring an umbrella …find it a challenge to do sth. Language points 一、选择合适的单词并用单词的适当形式填空。 may can must might need get 1.You look pale. You ____________ be sick. You should see a doctor. 2.Don’t worry. I __________ help you with your math homework. 3.There _____________ be a mistake. Let me check the answer again. 4.She __________ a helping hand because her leg is injured. 5. If we work together, we __________ finish the project on time. 6.We should do something to help them _____ through the cold winter. must / might can needs may / might can Exercises get — Is that Mr. Wang walking over there? — It _______ be him. He has gone to Shanghai for a meeting. A. must B. may C. can’t 2. Studying a new language at first ____ be a bit difficult, but don’t give up. A. must B. can C. may 3. The old lady __________ need a helping hand with her groceries. Let’s go and help her. A. may B. must C. can 4. I feel nervous about the coming exam.— ___. Perhaps I can study with you. A. Don’t worry B. That’s too bad C. Let’s give him a hand 二、单选题。 Exercises Summary Expressions bottle, a bottle of, exam, dialogue, flu, get through … Grammar We have learned to use must, may and can to express guesses and ask give permission. We have learnt the meaning of helping others in our lives. 23 Must do: 1.记忆本节课的单词和短语，重点句型; 2.完成课后的相关练习。 Choose to do: 海报创作： 将你的“帮助计划”核心内容，设计成一张英文倡议海报（可手绘或电子制作），号召更多人加入。需使用本课所学的情态动词和短语。 Homework Thank you 感 谢 观 看 $Let's be detectives with model verbs. The chair is empty. He must be busy. Look at the dark clouds. IT may rain. The classroom is empty. He can't be here. Remember, most is most certain, might and could, at least certain.