Unit 13 Section A Grammar focus-4c 课件 2025-2026学年人教版（2012）英语九年级全册

Unit 13 We’re trying to save the earth! Section A (Grammar focus-4c) 读写结合语法课优质课 人教新目标版 九年级(全册) Learning Objectives 1.通过观看视频和图片,能够正确地回答问题,能够说出鲨鱼的形态,在生态系统得位置以及数量变少得原因等。 2.通过fast reading阅读策略,能够正确选择文章大意和匹配段落大意,能正确说出段落中各句子之间的逻辑关系,;运用careful reaidng阅读策略,能够正确回答问题,填出“每年被捕捉和贸易的鲨鱼数量”等具体信息,说出鲨鱼濒临灭绝的原因,造成的后果现状以及拯救鲨鱼的措施。 3.通过图片和关键词能够复述课文内容,通过讨论问题,能够说出保护鲨鱼的措施,增强关爱动物,保护动物意识,呼吁人们保护鲨鱼。No trading, No Killing! 01 Revision Watch and say Enjoy a short video and answer the questions. 1.What’s happening to the earth ? 2.What caused the water pollution ? It is suffering from pollution. The river used to be clean. However, it is badly polluted. Even the bottom of the river was full of rubbish. Watch and say 2.What caused the water pollution ? People are throwing rubbish to the river. Factories are putting waste into the river. What should we do to save the earth ? Think and say What should we do to reduce the pollution? Some laws _(被制定) to stop the pollution. are made Everyone _ (应该参与)saving the earth. should take part in Take the bus or ride a bike instead of driving. Bring a bag instead of plastic bags when shopping. Remember to throw rubbish into the bins. Try to put different kinds of waste into different bins. 02 Lead in Watch and say Let’s watch another video and pay attention to the tense of different sentences. Can you Identify(识别)the sentences in the simple past tense一般过去时? Can you Identify the sentences in the present progressive tense 现在进行时? Can you Identify the sentences in the present perfect tense现在完成时? Can you Identify the sentences with modal verbs含有情态动词的句子? 03 Pre-grammar Fill and say Can you Identify(识别) the sentences in the simple past tense? It _(be) a lovely fresh spring in the meadow. 那是一个草地里美丽的早春。 You _me easily.你很容易就找到我了。 was found What are you _ at?你在看什么? They _ through spring flowers. 他们在春花中起舞。 looking are dancing Can you Identify the sentences in the present progressive tense? Fill and say Can you Identify(识别) the sentences in present perfect tense? Little Green Worm _. 小绿虫长大了。 I _ one quite like this before.我以前从未见过这样的。 has grown You _ the best finder. 你一定是最好的发现者。 haven’t seen must be Little Green Worm _ really hungry. 小绿虫一定非常非常饿。 must have been Can you Identify the sentences with modal verbs含有情态动词的句子? Read and fill Read the sentences and translate them. Fill in the blanks according to grammar focus. 1. We’re trying _ _ the earth. 我们正在尽力地拯救地球。 2. The river _ _ be so clean.河流过去常常是如此干净。 3. The air _ badly _.空气被严重地污染了。 4. No scientific studies _ _ that shark fins are good for health. 没有科学研究显示鲨鱼鱼鳍对健康有益处。 5. We _ _ save the sharks.我们应该帮助拯救鲨鱼。 to save used to is polluted have shown should help 04 While-grammar We’re trying to save the earth. Present progressive The river used to be so clean. used to The air is badly polluted. Passive voice No scientific studies have shown that shark fins are good for health. Present perfect We should help save the sharks. Modal verbs 现在进行时的结构和用法(Present progressive) Look and say What tense can you identify(识别)? 现在进行时 People are throwing rubbish to the river. Factories are putting waste into the river. 现在进行时 现在进行时结构 be(am,is,are) 现在进行时含义 ①表示正在发生或者进行的动作。 ②表示当前一段时间内的活动或现阶段正在进行的动作。 标志性词 now, right now,Look! Listen ! Look and say 写出下面动词的现在分词。 1.make _ 2.stop _ 3.begin _ 4.watch _ 5.buy _ 6.save _ 7.put _ 8.listen _ 9.drive _ 10.see _ 现在分词构成 1.一般情况下,直接+ing。 making stopping beginning watching buying saving putting listening driving seeing 2.以不发音的e结尾的,去e再加+ing。 3.以重读闭音节结尾,且末尾只有一个辅 音字母的,双写这个辅音字母再加+ing。 现在分词 We’re trying to save the earth. Present progressive The river used to be so clean. used to The air is badly polluted. Passive voice No scientific studies have shown that shark fins are good for health. Present perfect We should help save the sharks. Modal verbs Look and say used to 的结构和用法 Did the river use to be clean ? Yes,it did./ No, it didn’t. 1.结构 used to do sth didn’t use to do sth Did ...use to do sth ? Yes,...did./No,...didn’t. used to do sth 过去常常做某事,现在没做了。 use not to do sth Used... to do sth ? be used to doing sth 习惯于做某事。 be used to do sth 被用于做某事。 Look and fill Practice 1.You used _ (go) to school by bike,didn't you? 2. 我习惯于晚饭后打篮球。 I _ _ _ _basketball after dinner. 3.这种小刀是用来切东西的。 This kind of knife _ _ _ _ things. 4.He used to spend much time playing computer games.(改一般疑问句) _ _ _ _ _ much time playing computer games? to go am used to playing are used to cut Did he use to spend Look and say The air is badly polluted. Passive voice No scientific studies have shown that shark fins are good for health. Present perfect We should help save the sharks. Modal verbs 被动语态的结构和用法 Some laws are developed to stop the pollution. These trees were cut down by the workers last night. In the future , more and more work will be done by the robots. I think teenagers should be allowed to choose their own clothes. 被动语态构成: be +过去分词 一般现在时被动语态 am/is/are +done 一般过去时被动语态 was/were+done 一般将来时被动语态 will be +done 有情态动词被动语态 情态动词 +done 被动语态 Look and fill 用括号内所给动词的适当形式填空。 1. The Secondary School Entrance Exam _ (hold) in June. 2. A strange noise _ (hear) by his mother last night. 3. A wide road _ (build) between the two villages by those people next year. 4.Actions should_(take) to protect the earth. is held was heard will be built be taken 一般现在时 一般过去时 一般将来时 情态动词 Practice Look and say Do you know the usage of the present perfect tense? 现在完成时 现在进行时的结构和用法(Present progressive) The government has taken actions. He has kept this book for two weeks. Her grandfather has been dead for ten years. My mother has gone to Hong Kong. Mary has never been to the USA. 现在完成时构成 have/has +过去分词 现在完成时含义 ①表示过去发生的事情对现在造成的影响。 ②表示从过去某一时间开始一直持续到现在,并还有可能继续下去的动作。 标志性词 already, yet, ever, never, just, before, once, so far, recently, for, since. Look and say 辨析:have been to, have gone to &have been in I _ to Beijing twice.我去过北京两次了。(已经回来) have been have / has gone to 意为“_”, 表示到了某地或正在去某地的途中, 即说话时该人不在现场, 到某地去了 My mom_ the supermarket.我的妈妈去超市了。(人不在现场) has gone to have been in 意为“_”, 常与表示一段时间的状语连用。 已在某地 I _ Beijing for two years.我在北京2年龄了。 have been in Complete the following sentences. I _ (be) in Beijing for two years. 2. I _ never _ (hear) of that man before. 3. Tom _ (work) there since two years ago. 4. The twins _ (wash) the clothes for an hour. 5. He _ (play) basketball since three years ago. 6. How long _ Sally _ (sing) yet? have been have heard has worked have washed has played has sung Fill and say 写出下面动词的过去分词。 1.clean _ 2.live _ 3.study _ 4.plan _ 5.put _ 6.begin _ 7.teach_ 8.get _9.drive _10.see _ cleaned lived studied planned put begun taught got driven seen 过去分词的规则变化 1.一般情况下,直接+ed。 2.以字母e结尾的,直接+d。 3.以辅音字母+y结尾的,将y改为i再加+ed。 过去分词 4.以重读闭音节结尾,且末尾只有一个辅音字母的, 双写这个辅音字母再加+ed。 Look and say Do you know the usage of the modal verbs? 情态动词 Everyone should take part in saving the earth. He can’t play the guitar. They may have finished the task last month. 情态动词 1.情态动词+动词原形 2.情态动词没有人称和数的变化。 3. 常用的情态动词有:can/could, may/might, must/have to,should/ought to, would,need 等。 Fill and say Practice 1. —Could you play the piano at the age of five? —No, I _. I started at six. A. can’t B. shouldn’t C. needn’t D. couldn’t 2. —Must I return this book before Friday, Sir? —No, you _, dear. You can keep it for two weeks. A. can’t B. shouldn’t C. mustn’t D. needn’t 3. —How long can I keep these books? —According to the library rules, you _ return them within 7 days. A. must B. might C. could D.will 4. —You _ take photos here! Look at the sign. It says “No photos”. —Sorry, I won’t. A. must B. need C. mustn’t D. needn’t 05 Post-grammar Choose and fill Practice. 1. Look! Some old people _ in the park. A. sings B. sing C. are singing 2. —Don’t make noise! The children _online. —Sorry, I won’t. A. studies B. are studying C. studied D. were studying 3. —Peter, what are you doing? —Oh, I _ a report about national heroes. A. will write B. am writing C. wrote D. have written 4.You used _ (go) to school by bike,didn't you? 5. 我习惯于晚饭后打篮球。I _ _ _ _basketball after dinner. 6.这种小刀是用来切东西的。 This kind of knife _ _ _ _ things. 7.He used to spend much time playing computer games.(改一般疑问句) _ he _ _ _ much time playing computer games? to go am used to playing are used to cut Did use to spend Look and fill Fill in the blanks with the correct forms of the verbs in brackets. 4a Joe: _ you ever _ (take) part in an environmental project? Ken: Yes, I have. I _ (help) with a Clean-Up Day last year. It was _ (consider) the biggest clean-up project this city_ ever _ (have). Joe: How many people _ (take) part? Ken: I _ (think) more than 1,000 people _(come) to help out. Joe: That’s fantastic! I guess everyone in this city is _ (try) to improve the environment. Ken: Yes, we can’t afford to_ (wait) any longer to take action! Have helped considered had had took think came trying wait taken take part in sth/doing sth 参加 afford to do sth 负担得起 take action 采取行动 Look and fill 4b Fill in the blanks with the appropriate modal verbs from the box. may/might should/have to/must can/could/should can/could/should have to can/could/should can/could can/could would/can/could pay for 付费;付出代价 add up 合计;加起来 Discuss and say Make a list of things that people can do to help the environment and discuss your list with your partner. 4c I think that everyone should use public transportation. I disagree. It’s difficult for parents with young children to use public transportation... n. 运输业;交通运输 Look and say It's everyone’s duty to protect the environment. And it should begin from every aspect of our daily life. Only by changing the way we treat the environment can we get along well with it. Only by saving the earth can we save ourselves. 06 Summary Summary The river used to be clean. Summary However, it is badly polluted. People are throwing rubbish to the river. Factories are putting waste into the river. The government has taken actions. Some laws are developed to stop the pollution. Everyone should take part in saving the earth. used to do sth 被动语态 现在进行时 现在完成时 情态动词 07 Language points Language points We can’t afford to wait any longer to take action! 我们承担不起继续等待而不采取行动! afford v. 承担得起; 买得起; 提供, 给予 常与can, be able to等连用, 多用于否定句或疑问句。 afford sth. 买得起 / 承受得起某物 afford to do sth. 有能力做某事 / 负担得起做某事 e.g. Can you afford the mobile phone? We can’t afford to pay such a price. 08 Exercises Class test 一、用所给词的适当形式填空 1. The old man used _ (be) a teacher. 2. We should _ (clean) the room every day. 3. Look! Tom _ (sleep) in his room. 4. Lots of trees _(plant) on the hill every year. 5. He _ (live) here for 20 years. to be clean is sleeping are planted has lived Class test 二、根据所给汉语完成英语句子。 1. 这条河过去很干净。 The river _ _ _ so clean. 2. 我们应该帮助拯救鲨鱼。 We should _ _ the sharks. 3. 然而,很多人忘记了拯救地球从小事做起。 However, many forget that saving the earth_ _ small things. 4. 在很多商店,你不得不付塑料袋的费用 In some stores, you now have to _ _ plastic bags. 5. 我们认为每个人都应该使用公共交通工具。 We think that everyone should use _ _. used to be help save begins with pay for public transportation Homework 1. 熟记Grammar Focus 里面的句子。 2. 熟读Section B P101对应的单词; 预习课本P101,完成1a. Lavf58.29.100 Packed by Bilibili XCoder v2.0.2 $Doing push ring time fws racing, soma son catching with no flix on, you know, running through early. That countries on high without that is because in the sky. love you ve, you ve you. I love you with you. I ve how much I love you. Little Green one IT was . a lovely fresh spring in the medal. With new life all around, the bees were bushy, the butterflies were flitting. I'm coming to find you. My little nut Brown hair . and father and son, not Brown hairs, were enjoying . a game of hidden and seek. You can hide from me. This tell me easily, you must be the best defined in the . whole matter I might be. But what about a little . field now? Oh yes, lots more trouble . finding me. Coming ready or not, let's not Brown hair. Oh, this is a Brown hair. I found you easily this time wasn't there? Better hide in place. Come and have a look. Oh, what is that? What you looking at? I can't see anything. Listen up. Brown hair. Don't about. wow. You know what? This little creature . is little few mass. I've ve been seen one quite like this before. Oh yes, I know that is somewhere that well IT looks like a little Green warm, little Green warm. It's a Green worm. That's what will call you. Yes, i'm sure it's a warm now. Hello, little Green one, you very cute and so very hungry, it's sure is, I mean, one usually are. Well, tomorrow i'm going to bring you something special to us. This great me too, very special. So the next day, little not Brown hair and little fuel mouth came to visit their new friend with . their most favorite spring foods to eat. wow。 不知不觉，一件件看似渺小的遗物在无限的堆积下，寻常生命之重负而陷落，毫无声息。如今所发生的一切都将告知人们，地球正在衰退，森林逐渐被破坏，这是我们共同拥有的世界，而你要做的只是细微的举动，改变过去，将自身于其中之美惊艳着我们的灵魂。在阳光映照下密林里精灵的出现呼唤万物复苏，北风从大海轻拂而来聆听着大自然欢喜的旋律这是我们终其一生所追寻的意义。在有限的时间里美和生命并不意味着永恒，充满负荷的家园再也无法承受最终那些我们追寻的美好，直到分裂我们仅有的未来。保护环境，愿我们能回到最初的模样。