Unit 3 Conservation Lesson 1 Focus On Language 语法 提升语言能力（Word教参）-【新课程学案】新教材2023-2024学年高中英语选择性必修第一册（北师大版2019）

Lesson 1: Focus On Language—语法·提升语言能力 课时目标 1.掌握引导定语从句的关系词以及它们的作用和用法。 2.了解限制性定语从句与非限制性定语从句的区别。 3.能用定语从句表达自己的一些关于保护环境的想法。 语法项目—— Relative Clause (4)— Defining and Non-defining Clauses 初识语法——在美文运用中体悟 I am in a small village in the Carpathian mountains, north of Bucharest, the capital of Romania.I've come to see the brown bears, ①which come to the villages at night to look for food. They walk 20 kilometres a night to get here.It is said that some of the sheep in the village have been killed by bears.But this is unusual.Usually, the bears just take bits of food ②which people have thrown away． The bears are not afraid of the tourists ③who take photos of them．Those clever bears know the places ④where they can go for their dinner．They jump straight into the rubbish ⑤where there is lots of food ⑥which people have thrown away． It was on January 3 ⑦when I met the head of the Carpathian Animal Protection Group that he told me that there are only about 2，500 bears left and is worried that they will soon become extinct.The reason ⑧why they are dying out is that rich people from other countries pay a lot of money to come and shoot the bears for sport.⑨As we know, if the species ⑩whose role is important in nature are extinct, we human beings might become extinct.Therefore, we should protect them. ①关系代词which引导非限制性定语从句，修饰先行词bears； ②⑥关系代词which引导限制性定语从句，修饰先行词food，which在从句中作thrown away的宾语，which可以省略； ③关系代词who引导限制性定语从句，修饰先行词tourists； ④⑤关系副词where引导限制性定语从句，分别修饰先行词places和rubbish； ⑦关系副词when引导限制性定语从句，修饰先行词January 3； ⑧关系副词why引导限制性定语从句，修饰先行词reason； ⑨关系代词as引导非限制性定语从句，as表示“正如，正像”，指代后面的主句的内容； ⑩关系代词whose引导限制性定语从句，修饰先行词species。 慧学语法——运用“形式—意义—使用”三维动态语法观　 根据定语从句与先行词的关系，定语从句分为限制性定语从句和非限制性定语从句两种。 一、限制性定语从句与非限制性定语从句的区别 [先感知] ①(教材典句)Extinctions, where entire species are wiped out, are not unusual in our Earth's history. ②(教材典句) In the last 500 million years, there have been five times when life on Earth has almost ended. ③This is the house which we bought last month. ④The house, which we bought last m