Unit 4 Natural Disasters Discovering Useful Structures 教学课件-2023-2024学年高中英语人教版（2019）必修第一册

Unit 4 Natural Disasters Discovering Useful Structures Restrictive relative clauses Learning goals: 1. To master the grammar rules, especially about how to choose the relatives（关系词）. 2. Be able to apply attributive clauses to describing something and your writing. 1. There were deep cracks that appeared in the well walls. 2. Two thirds of the people who lived there were dead or injured. 3. The number of people who were killed or badly injured in the quake was more than 400,000. 4. Soon after the quakes, the army sent 150,000 soldiers to Tangshan to dig out those who were trapped and to bury the dead. 5. Workers built shelters for survivors whose homes had been destoryed. Step1 Discovering 语法思考： 定语从句是什么？ 有什么作用？ 本节语法导读 在复合句中，对某一名词或代词起修饰限制作用的从句就叫做定语从句。被定语从句修饰的词，叫先行词。引导定语从句的叫关系词。定语从句一定放在被修饰成分之后。 I. 定语从句的概念 关系代词：who, whom, whose, which, that 关系副词：when, where, why 关系词作用： ① 连接作用，连接主句和从句 ② 指代先行词 ③ 在定语从句中充当成分 eg: There were deep cracks that appeared in the well walls. 双成学案P75 如何选定语从句的关系词 1. 辨清主句和定语从句 2. 找准定语从句的先行词（人/物/事/人和物） 3. 把先行词代入从句中，看其在定语从句中充当的成分。 4. 套用定语从句语法规则。 II.语法实例探究 二、关系代词的基本用法 1. who指人，在定语从句中可以充当主语、宾语或表语，作宾语时可省略。 The children who were injured in a car accident are being treated in the hospital now. The children who were injured in a car accident are being treated in the hospital now. 2. whom指人，在定语从句中作宾语，可省略，也可用who代替。 Rose is the person (who/whom) you should care about. 3. whose既可以指人，也可以指物，表示“所属”关系，在定语从句中作定语。 I know the person whose house was destroyed in the earthquake. Rose is the person (who/whom) you should care about. I know the person whose house was destroyed in the earthquake. 4. which指物，在定语从句中作主语、宾语或表语，作宾语时可省略。 The pen (which) you found yesterday is mine. 5. that既可指人，也可指物，在定语从句中作主语、宾语或表语，作宾语时可以省略。习惯上指人多用who/whom，指物多用which。 eg: The number of people that/who come to visit this city each year reaches one million. 1. The T