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课件网) Unit 4 Natural Disasters Discovering Useful Structures 1 Students are able to identify and summarize the key grammar structures related to natural disasters in Unit 4, such as relevant verb tenses and sentence patterns. 2 Students can apply the grammar structures learned in this unit correctly in both oral and written expressions about natural disasters. Learning Objectives Teaching Focus Focus on helping students master the grammar structures for describing natural disasters, including verb tenses and key sentence patterns. Teaching Challenges Enable students to accurately distinguish and correctly use similar grammar structures when expressing ideas about natural disasters. Teaching Focus and Teaching Challenges Part 1 Attributive Clause (Ⅰ) Lead-in 他是一个巫师 他是一个在霍格沃茨上学的巫师 他是一个在霍格沃茨上学、戴着圆框眼镜的巫师 他是一个在霍格沃茨上学、戴着圆框眼镜、额头有闪电疤痕的巫师 他是一个在霍格沃茨上学、戴着圆框眼镜、额头有闪电疤痕、手持冬青木魔杖的巫师 他是一个在霍格沃茨上学、戴着圆框眼镜、额头有闪电疤痕、手持冬青木魔杖、曾经三次打败伏地魔的巫师 猜猜他是谁？ 定义与作用 定语从句 在复合句中，作定语修饰名词或代词的从句。 The couple who live next to us volunteered to help after the volcano erupted. 先行词 定语从句所修饰的名词或代词叫做先行词。 关系词 连接主句和从句 指代先行词 在从句中充当句子成分 （作用） 关系代词 关系代词除了指代主句中的先行词外，同时还在定语从句中作主语、宾语、表语等。作宾语时可以省略;但关系代词作介词宾语，而且介词提到它的前面时,关系代词不能省略。 关系代词 修饰的先行词 在从句中所作的成分 who 人 主语、宾语 whom 人 宾语 whose 人或物 定语 that 人或物 主语、宾语、表语 which 物或事 主语、宾语、定语、表语 as 人、物或事 主语、宾语、表语 who, whom的用法 关系代词who,whom指 _____，who在定语从句中作_____或_____，whom作_____，作_____时可省略。 人 宾语 宾语 主语 宾语 1. She is a student who comes from Canada. 2. The man (who/whom) you met just now is my father. 二者都用于指人。 在从句中作介词的宾语且介词提到关系词之前时,只能用whom, 不能用who。 I have many friends to whom I can turn for help when in trouble. 我有很多在困难时刻可以求助的朋友。 whose的用法 关系代词whose既可以指 _____也可以指物，表示先行词和它所修饰的词之间是所属关系，在定语从句中做_____。 人 定语 The girl whose work got the prize is the youngest in her class. 2. It’s the house whose door is painted red. 3. This kind of book is for children whose native language is English. whose的用法 在whom和which之前加of也可以表示_____ (即: of whom, of which)。此时名词需要_____，应加定冠词，放在of whom，of which之前或之后均可。 所属关系 I want to help the children whose parents died in the earthquake. =I want to help the children of whom the parents died in the earthquake. =I want to help the children the parents of whom died in the earthquake. We must repair the desks whose legs are broken. =We must repair the desks of which the legs are broken. =We must repair the desks the legs of which are broken. 特指 which的用 ... ...
