八年级英语下册 Unit 6 How long have you been collecting shells教学案 人教新目标版.doc

课题：Unit 6 How long have you been collecting shells?Section A 1a-2c教学分析（1）教材分析：本节课的重点是现在完成进行时的理解、掌握和运用。即have/has been+v-ing结构的运用。在前面已经学过现在进行时这一时态。When和how long引导的特殊疑问句，这些知识的储备对于现在完成进行时学习具有重要的作用。本节的内容围绕卡通画的旱冰马拉松比赛展开，包括现场的采访和现场报道，都是为了现在完成进行时这一语法的理解和掌握。学生在运用现在完成进行时的过程中，容易丢失其中的be动词的完成式been或句中的动词忘了加ing。因此现在完成进行时这种结构的掌握和运用是本节的难点。学生对现在进行时和现在完成进行时这两种时态在何种情况下使用，可能有疑惑，以及对现在完成进行时中引导时间的介词for和since的使用也有疑惑。这是本单元的疑难点。教材的设计由简而难，图文并茂，容易引起学生很大的学习兴趣。（2）学生分析：在前面几个单元学生已经储备了现在进行时相关的知识，而本单元的内容是现在完成进行时，即“have/has been+v-ing”形式，两者有些相似，在此基础上学习现在完成进行时相对比较容易，况且本单元围绕卡通马拉松比赛来展开，易于学生的学习和接受。八年级下英语Unit6 Section A(1a-2c) 第一课时预习案预习目标：1.掌握本课的单词.2.能用新句型进行对话，了解完成时态的用法.3.培养学生们的交际能力，以及相互帮助和合作的能力.预习重点：1.现在完成时态的构成及用法，标志词.2.have /has been and have/has gone 的区别.预习任务： 任务一：自主完成以下词汇收集_贝壳 _ 一双 _溜冰鞋_自从 _马拉松赛跑 _一双溜冰鞋_ 在马拉松赛中_任务二：自主预习1b,2a,2b的听力1.译下面的句子. Ive been skating for five hours.I skated for four hours.2.以上两个句子有什么区别:_.3.拓展练习: a. 自从八点开始，我就已经滑冰了._.b. 我读过这本书._ .c. 我收集贝壳已经两年了。_.4.自主区别for /since用于现在完成进行时的用法_.任务三：how 的相关词组:How_多少（钱）how _多少(人)How_多远 how _多久一次How_多大 how _ 多久以后任务四：自主归纳现在完成时态的构成及用法，标志词.构成:_.标志词:_.用法:_.预习质疑: 在预习中那些地方不明白或不理解. _.教学案Learning Objectives:1Knowing：(1) Master the following words: collect shell marathon pair skate since Hilltop School (2) The tense: The Present Perfect Progressive Tense（3）Master the following sentence structures:A: How long has Alison been skating? B: She has been skating for + some time /since + / since + some time +ago/ since + Past Tense 2Process and methods：(1)通过图片和情景对话学习句型。（2）通过听力练习和分组练习，比较一般过去时和现在完成时，比较since和for的区别。（3）通过书面表达提高活用所学语言的能力。3情感态度与价值观：学习完本节课后，我们应以中华民族的振兴为己任，发奋读书传我文明。同时也要常为人类做一些慈善之事，表达我们的爱意。Key points：1Words 2Sentences: A: How long have you + been + ving? B:I have been + ving A: How long did you? B: I Difficult points： The Present Perfect Progressive Tense。我们可以用引导和合作的方式来这一重难点，本节课将采用任务型学习法来完成。Leaching process:ALearning tasks：Task 1: Learn the Present Perfect progressive Tense Task 2: Listening practiceBLearning process：一.预习交流：Check answers in pairs,see if they have difficulties, help them.二.精讲点拨： Learn the using of the Present Perfect Progressive Tense. (1) 构成： _. (2) Sentences structures: 否定句：_. 疑问句: _? Yes, _/ _. (3) 用法： A.表示动作从过去某一时态开始一直延续到现在的动作，这一动作可能刚刚停止，也可能仍然继续进行下去。 For example：What books have you been reading these days? _。 B.表示不久前刚结束的动作，这个意义应根据上文来判断。 For example： Sorry, Im late. How long have you been waiting here. _。三拓展训练.Task 1：Learn the Present Perfect progressive Tense .1Group work .Give students several minutes to discuss the three questions in 1a. (1) How long did you sleep last right? . (2) When did you start class today? . (3) How long have you been in class today? . 2Look and talk about the pictures to learn the Present Perfect Progressive Tense.A：How long have you been + v-ing? (skate swim _) B：Ive been + v-ingTask 2 Listening practice Task2：Listen and fill in the chart(Finish off 1b) cheek the answers. How longAlisonIve been skating for five hours SamVictorCeliaTask3：(1) Listen and cheek the questions you hear. Questions Answers_1. How long did you skate today? a. No, I skated in a marathon last year. _2. How long have you been skating today? b. Yes, I do._3. Was this your first skating marathon? c. For six hours._4. Do you skate every day? d. Since I was seven years old._5. When did you get your first pair of skates? _6. How long have you been skating? （2）Listen again and draw lines to match the questions with answers above.Task4：Pair work. Ask and answer in pairs. Using the following sentence structures. A: How long have you been + v-ing? B: Ive been + v-ing Task5：实践应用： 运用以上所学的现在完成进行时在小组内进行对话练习，并且把小组中练习的句子组成一篇短文，然后在全班内交流。四系统总结.1回顾现在完成进行时的构成、用法。_.2比较现在完成进行时与现在进行时的不同。_.五限时作业：Ex1.用所给词的正确形式填空.1. How long have you been (write) in English. 2. Jim was the _(one) student to get to school this morning. 3. She bought several _(pair) of socks just now. 4. We hope everything _(go) well. 5. If _(someone) else wants to come, tell me please.Ex2.根据句意及首字母补全单词. 1.Ive been s_ for five years. 2.When did you get your first p_ of skates? 3.Is this your first to run m_? 4.It is two years s_ we came here.Ex3.句型转换. 1. She has been skating for five years.(改为否定句)_. 2. We played basketball two hours ago.(用现在完成进行时改写此句) _. 3. I have been swimming for five years.(对画线部分提问) _. 4. Uncle Wang has been living here for 20 years.(用since改写此句) _. 5.I started skating when I was eleven years old. (对画线部分提问) _.Bb design：Unit 6 How long have you been collecting shells? Section A 1a-2cThe Present Perfect Progressive Tense A: How long have you been skating? Have/has been +