- 人教2011课标版_九年级全一册(2014年3月第1版)_初中英语_Unit 13 Were trying to save the earth!_Section A Grammar focus 4a—4c_ppt课件_(含教案+视频)_市级优课_(编号:904ad)
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Pay attention to the sentences. 1. Were trying to save the earth. 2. The river used to be so clean. 3. The air is badly polluted. 4. No scientific studies have shown that shark fins are good for health. 5. We should help save the sharks. Present progressive used to Passive voice Present perfect Modal verbs 现在进行时现在进行时: : Present Progressive 结构结构: be (am/is/are) + v.-ing 标志词:标志词:Look, Listen, now, right now e.g. Look! The boy is crying. 定义:定义:表示说话时表示说话时(瞬间瞬间)正在进行正在进行 的动作的动作, 也表示目前或现阶段正在进也表示目前或现阶段正在进 行的动作。行的动作。 What a fine day today! Look! What are they doing? used to do sth. 表示过去常常做某事表示过去常常做某事, 而现而现 在往往不做了在往往不做了, 后接动词原后接动词原 形。形。 be used to doing sth. 表示习惯于做某事表示习惯于做某事 e.g. I used to get up at six oclock. Joe is used to drinking a cup of coffee every morning. used to do与与be used to doing Translation. 1. 她过去常常周末和朋友闲逛。她过去常常周末和朋友闲逛。 She used to hang out with friends on weekends. 2. 他习惯于每天晚上睡得很晚。他习惯于每天晚上睡得很晚。 He is used to staying up. 被动语态:被动语态:Passive voice 定义:定义:表示主语是动作的承受者,即行表示主语是动作的承受者,即行 为动作的对象的一种语态。为动作的对象的一种语态。 结构:结构:be + 过去分词过去分词 e.g. A new school was built last year. Our classroom is cleaned every day. Translate the sentences by using Passive voice. 1. 刚才一些老年人参观了博物馆。刚才一些老年人参观了博物馆。 2. 工人们使用不同种类的机器工作。工人们使用不同种类的机器工作。 The museum was visited by some old people just now. Different kinds of machines are used to work by the workers. 结构结构: has/have + 过去分词过去分词 标志词:标志词:already, yet, ever, never, since, for e.g. I havent finished my homework yet. 定义:定义:表示动作已经完成表示动作已经完成, 但对现在造成影但对现在造成影 响响; 或者表示从过去某一时间开始一或者表示从过去某一时间开始一 直延续到现在并还可能持续下去的直延续到现在并还可能持续下去的 动作。动作。 现在完成时现在完成时: Present Perfect Complete the following sentences. 1. I _ (be) in Beijing for two years. 2. I _ never _ (hear) of that man before. 3. Tom _ (work) there since two years ago. have been haveheard has worked 4. The twins _ (wash) the clothes for an hour. 5. He _ (play) basketball since three years ago. 6. How long _ Sally _ (sing) yet? have washed has played has sung 1. 情态动词本身有一定的词义情态动词本身有一定的词义, 表示说表示说 话人的情绪、态度或语气话人的情绪、态度或语气, 但不能单但不能单 独作谓语独作谓语, 只能与其他动词构成谓语。只能与其他动词构成谓语。 常见的有常见的有: can (could), may (might), must, need, shall (should), will (would)等。等。 情态动词情态动词 2. 情态动词无人称和数的变化情态动词无人称和数的变化, 后接动词后接动词 原形。否定式是在情态动词后面加原形。否定式是在情态动词后面加not。 个别情态动词有过去式形式个别情态动词有过去式形式, 可用来表可用来表 达更加客气、委婉的语气。达更加客气、委婉的语气。 e.g. Ken can climb up the tress like a koala. Tom could ride a bicycle when she was five years old. You mustnt play with fire. It is dangerous. Translation. 1. 我们不能在教室里吃东西。我们不能在教室里吃东西。 2. 首先你必须完成作业。首先你必须完成作业。 3. 他现在不可能在家。他现在不可能在家。 4. 她一定知道这个问题的答案。她一定知道这个问题的答案。 We cant eat in the classroom. You must finish your homework first. He cant be at home now. She must know the answer to this question. Section A(Grammar focus 4c) I. 知识目标 类别 课时要点 重点单词 1. afford v. 承担得起; 2. recycle v. 回收利用; 3. reusable adj. 可重复使用的; 4. transportation n. 运输业; 重点词组 1. take part in 参加 2. cant afford to do sth 负担不起做某 3. take action 采取行动 4. turn off 关掉 5. pay for 付费 6. add up 累加 7. use public transportation 使用公共交通 重点句式 1.It was considered the biggest clean-up project this city had ever had. 这 被认为是这个城市曾经开展的一次最大幅度的清理活动。 2.We cant afford to wait any longer to take action! 我们不能再等待更 长的时间来采取行动! 3.Many forget that saving the earth begins with small things. 许多人忘记 了拯救地球要从小 事做起。 4. And instead of driving to school or work, you could ride your bike or walk.你可以骑自行车或步行上学或上班,而不是开车。 II. 课堂环节 自主学习方案 【新词自查】 根据汉语提示完成单词。 1. The shoes are so expensive that I cant afford (买得起)them. 2. We should use reusable chopsticks when we eat outside. 3. What do you think of the transportation(交通)in China? 4. The Spring Festival is consideredthe most important festival in China. 5. We can save electricity(电) by turning off the lights when we leave a room. 课堂导学方案 Step 1 情景导入(参考案例) Teacher: 1、 Have you ever take part in an environment project? 2、How should you do to save the environment? Students: We can_. turn off the lights when use the paper ba gs. walk to school环节说明:通过课前的一个师生问答互动引入 新课的话题 Step 2. 畅通 Grammar Focus 回顾语法重点. 要求学生翻开课本 P100,要求学生分角色问答并翻译表格中的句子。 复习各种句式所含的时态与句型结构及基本用法。并能造出相仿的 句子。 Step 3 完成教材 4a-4c 的任务 1.用 4a 对话中所对单词的正确形式完成对话.给出 5 分钟的时限,然 后请 2 位同学朗读对话,全班集体核对答案。 (5 分钟) Have, taken; helped, considered; had, had; took; think; came; trying; wait; 2.选用 4b 方框中所给情态动词完成短文,给出 5 分钟的时限,然后 请 2 位同学朗读短文,全班集体核对答案。 (5 分钟) May, must, can, may, have to, could, would, could, can; 4.根据 4c 所 给的提示列举出能帮助保护环境的事,并和小组进行讨论(2 分钟) 环节说明:将听、说、读、写的任务结合起来不仅锻炼了学生的语 言综合运用能力,还巩固了学生对目标语言的学习、识记和运用。 Step 4 Homework Practice words and sentences;write a report about 4c(85 个词) 当堂评价方案(详见当堂训练部分)
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