人教版（2019）必修第一册Unit 4 Natural Disasters Discovering Useful Structures 教案（表格式）

U4 Natural Disasters Discovering Useful Structures 教案 教材分析： 本课时的主题是“describe pictures of disasters”描绘灾难图片。主要语法结构是限制性定语从句，学生需掌握关系代词和关系副词that, which, who, whom, whose, where, when, why的含义，功能和用法。首先在句子中初步掌握关系代词与关系副词的用法和功能；其次在语境中加深理解，最后运用限制性定语从句描绘灾难图片。 教学策略与设计说明： 采用演绎法（Deductive method），老师首先呈现语法规则和相关例句，进行讲授，学生理解之后再用所学规则在语境中产出。 教学目标： 在本课学习结束时，学生能够： 语言能力上，掌握限制性定语从句的功能和规则，区分关系代词that, which, who, whom, whose和关系副词when, where, why的功能和规则。 思维品质上，根据规则，举一反三，分析图片并深入思考背后的含义。 文化意识上，了解灾后的救援工作，对救援工作人员的辛苦付出表示敬畏。 学习能力上，掌握语法的高效学习方法，如演绎，分析和归纳；通过与同伴合作，在互动中相互借鉴学习。 教学重点： 学生能够掌握并区分关系代词与关系副词的功能和用法； 学生能够用限制性定语从句描绘图片，提高句子复杂度。 教学难点： 学生清晰地区分关系代词和关系副词的功能和用法； 学生从不同层次分析、描绘灾难图片。 教学资源： 教材、多媒体课件、黑板与粉笔。 教学过程： 步骤 教学活动 设计意图 时间与模式 Step 1 Lead-in: T presents pictures one by one and asks students to speak out the names of natural disasters. T provides the word on the PPT after Ss speak out the words. (wildfire, flood, tsunami, earthquake, drought, tornado, volcano eruption, landslide) 3. T presents a picture describing a situation where a man says “I’ve just hired a secretary who can speak five languages.” T asks Ss to think about the function of “who can speak five languages” firstly. Then T explains: “who” is a relative pronoun. “who can speak five languages” is a restrictive relative clause. It tells about which person or thing the speaker is talking about. 通过图片，快速回忆所学词汇，为后面描绘灾难图片做好铺垫；通过图片引入定语从句。 3’ CW Step 2 Underlining: Ss find out the restrictive relative clauses in the sentences and state their functions. “that my great-grandma cannot forget” 修饰名词experience。 “who live next to us”修饰名词couple。 ... (T leads Ss to find out more restrictive relative clauses from the passage on page 50.) 学生独立发现关系代词和关系副词的形式和功能，进一步巩固规则。 3’ IW Step 3 Structures: T explains the definition of relative clause and the type “restrictive relative clause and non-restrictive clause”. Then, T leads Ss to differentiate restrictive relative clause and non-restrictive clause. ①non-restrictive relative clause uses comma, but restrictive relative clause not; ② non-restrictive relative clause presents just additional information; restrictive relative clause presents information necessary to identify. T introduces the definition of restrictive relative clause and gives some examples. Definition: 限制性定语从句通常由关系代词或关系副词引导，说明事物的具体信息，从句位于被修饰词之后. Examples: The man who lives next to us is a police officer. A drone is an a ... ...