Unit 4 Natural disasters Discovering Useful Structures教学设计 人教版（2019）必修 第一册

人教版必修第一册Unit4 Discovering Useful Structures 学习目标 To identify restrictive relative clauses and understand their functions. To practice using relative pronouns like that, which, who, etc. in sentences. To create sentences with restrictive relative clauses based on pictures. 课堂导入 Earthquake Rescue Mission In a rescue mission, we say: "The dog that found survivors saved lives." "The doctor whose bag was red helped the injured." "The supplies which arrived first were most needed." These sentences use restrictive relative clauses—they describe nouns right after them and are essential to meaning. Can you spot the pattern Let’s explore how these clauses work! production Activity3 Work with a partner. Take turns to ask each other about the pictures. Make sentences with restrictive relative clauses using that, which, who, whose, or whom. **EXAMPLE ** A: What’s the search and rescue dog doing B: It’s looking for the people who survived the earthquake. Answer: Example for the first picture: A: What is the person in the orange rescue suit and red helmet doing B: He is guiding the search - and - rescue dog which is going over the obstacles. Example for the second picture: A: What are the people in camouflage uniforms doing B: They are the ones who are setting up or adjusting the tent structure. Example for the third picture: A: Who are the two people in the third picture B: They are the rescuers who are helping the person whose leg might be injured leave the scene. 课堂练习 第1题 【题文】当我的英语老师走进教室时，我惊讶地发现她就是我早些时候遇见的那个人。(汉译英) _____【答案】When my English teacher walked into/entered the classroom, I was surprised to find (that) she was the person (who/whom) I had met earlier. 第2题 【题文】The volunteer _____ organizes community charity activities every weekend is my neighbor. (用适当的词填空)【答案】who##that 第3题 【题文】万一所有你不确定且只是随便瞎猜的答案，结果却是正确的呢？(what if) _____【答案】What if all the answers (that) you are not sure about and just guessed randomly turned out to be correct 课堂总结 Type Structure Function Example 定语从句 在主从复合句中，对某一名词或代词（先行词）起修饰作用的从句 修饰先行词 The Tangshan earthquake was a terrible experience that my great - grandma cannot forget.（“that my great - grandma cannot forget”修饰先行词“experience”） 关系词 - 关系代词 who（指人，作主语、宾语、表语） whom（指人，作宾语，可省略，可用who替代） whose（修饰人或物，表“所属”关系，作定语） which（指事或物，也可指代整个句子，作主语、宾语、表语，作宾语时可省略） that（指人或物，作主语、宾语、表语，作宾语时一般可省略，指人时可用who替代，指物时可用which替代） as（先行词前有so, such, the same修饰时引导限制性定语从句，作主语、宾语、表语；引导非限制性定语从句时，先行词是整个句子） 连接主从句、指代先行词、在从句中充当句子成分 The couple who live next to us volunteered to help after the volcano erupted.（who指人“the couple”，在从句中作主语） A doctor with whom James used to work died in the ... ...