Unit 5 Into the Unknown Using language课件 2022-2023学年高中英语外研版(2019)选择性必修第四册

UNIT 5　 Into the unknown --- Using language 1. Students could learn some words and phrases. 2. Students could get the main usage of this grammar. 3. Students could write sentences about this grammar. Learning Aims: Review: noun clauses 名词从句 Review: noun clauses What is your understanding of this title？ Share with others Brainstorming: Before learning this grammar, what ideas come to your mind? 1. object clause 2. predicative clause 3. ... Look at the sentences and answer the questions. a. Although his theory has been dismissed by scholars, it shows how powerful the secrets of Ancient Maya civilisation are among people. b. But the greatest mystery of all is what caused the Maya to abandon most of their great cities. c. Why Maya civilisation collapsed remains a mystery. Grammar: noun clauses 1. Which sentence contains a clause that serves as the subject of the sentence? Sentence c. Why Maya civilisation collapsed(主语）remains a mystery. 2. Which sentence contains a clause that serves as the object of the sentence? Sentence a. a. Although his theory has been dismissed by scholars, it shows how powerful the secrets of Ancient Maya civilisation are among people(宾语). 3. Which sentence contains a clause that gives further information about the subject in the sentence? Sentence b. But the greatest mystery of all is what caused the Maya to abandon most of their great cities. 4. What do “how” , “what” and “why” in each sentence refer to? “how” : the extent of power of Ancient Maya civilisation’s secrets; “what” ： it caused the Maya to abandon most of their great cities; “why” ：the reason that Maya civilisation collapsed. a. Although his theory has been dismissed by scholars, it shows how powerful the secrets of Ancient Maya civilisation are among people. b. But the greatest mystery of all is what caused the Maya to abandon most of their great cities. c. Why Maya civilisation collapsed remains a mystery. 名 词 性 从 句 主语从句 宾语从句 表语从句 同位语从句 按在主句中充当的成分分类 名词性从句