Unit 1 Science and Scientists Discover useful structures 表语从句 课件-2024-2025学年高中英语人教版（2019）选择性必修第二册

Book5 U1:Science and Scientists Discover useful structures 表语从句 Predicative Clauses Learning objectives: 1.Understand the definition and function of predicative clauses 2.Choose proper conjunctions to introduce predicative clauses 3.Apply the predicative clauses to writing correctly What is the predicative in each sentence? That is why it’s called the present! Predicative Clause(表语从句) Yesterday is history. Tomorrow is a mystery. Today is a gift. 往日已成历史， 未来犹未可知， 唯有今日是珍贵的赐予. 那便是为什么我们称它为礼物 I: Definition 3 Conclusion 总结： 思考： 表语从句的结构： 表语从句的构成: 表语从句是指在复合句中做________的从句。它位于主句的_______之后，对主语进行解释说明，使主语的内容具体化。 表语 系动词 + That is why it’s called the present! 引导词 简单句 How to judge whether it is a predicative clause ? 1. I want to know if/whether anyone can help me. 2. One theory was that bad air caused the disease. 3.The question remained when the cholera would be destroyed. 4 What impresses me most is his ability to fulfill his dreams. 5. Snow marked the exact places where all those had lived 6.The pump water carried cholera germs.That was why Snow had the handle of the pump removed. 表语从句有： 引导词 ___ ___ 在从句中不作成分 that / whether / as if, as though，because 无含义/ 是否 / 好像/和...一样 ___ ___ 在从句中作主语、宾语、表语、定语 what, who, whom, which, whatever, whoever, whomever,whichever whose ___ ___ 在从句中作状语 when, where, how, why 表语从句中不用if 从属连词 连接代词 连接副词 II: Connective words He looked just as he had looked ten years before. 他看起来还与十年前一样。 一、从属连词：that & whether & because&as if /though等 1. The most important thing is that we finish the final task. 2. The question is whether we can finish it in such a short time. 3. The reason why he was late is that he got up late. 用法归纳： a. that引导表语从句时，只起______作用，作/不作句子成分，有/没有意义。 b. whether引导表语从句时，只起______作用，作/不作句子成分，通常翻译为“______”。注意，引导表语从句时通常不用if。 连接 √ √ 是否 主语是reason时，表语从句不能用because, 只能用that。 c. 注意这个结构：The reason why ... is that ... 连接 √ 特殊用法： 用法归纳：表示___________________(advice, suggestion, request, proposal, demand,order) 等名词后面的表语从句要用虚拟语气,即谓语动词用“should + 动词原形”,should可省略。 My advice is that you (should) think it over before you make a decision. My suggestion is that we all ___________ (take) an active part in the coming sports meeting. 建议，要求，命令 (should) take 1)特定名词+系动词＋that+（should）do结构 2)because引导的表语从句常见于"This/That/It is/was because..." 句型中 e.g. He was sent to the hospital. That's because he was ill. That's because…强调 ；That's why… 强调 1) He failed the math exam. That’s __________he was too careless. 2) He was too careless. That’s ______ he failed the math exam. 特殊用法： because why e.g. He was ill. That's why he was sent to the hospital. 原因 结果 3).从属连词as if/ as though引导的表语从句 It sounds as if / though someone is knocking at the door. She looked as if she had been hit by lightning. It seems as if she were mad. as if/though 在从句中________(是/否)充当成分，意为“______________”;若表语从句所述的是非真实的情况，从句用_________(主句一般现在时，从句用_________时；主句过去式，从句___________时)； 不 似乎；好像 虚拟语气 一般过去 过去完成 who / whom / whose / which / what等 二、连接代词： 连接代词在表语从句中可充当主语、宾语、表语或定语。“缺什么补什么”：根据从句句意与所缺成分确定连接词 如果句子中缺主语，指人用 ，指物用 。 如缺宾语，指人用 ，指物用 。 如缺定语用 或 。 ① This is _______ my teacher has taught me — honesty. ②The problem is _______ can take the place of Jim. ③What I want to know is _______ words are helpful. who what whom whose what which what who whose 三.连接副词: 连接副词在表语从句中充当状语，可表时间、地点、原因、方式等，不可省。 依据“缺什么补什么”原则确定正确的连词。 如缺时间状语用 ；地点状语用 。 原因状语用 ；方式状语用 。 when where why how when /where / why / how等 ① Your dictionary is still _______ you put it yesterday ② The question is ______ he can arrive at the hotel. ③ My problem is _____we can finish such a difficult task in three days.  It's simply impossible. where when how Exercise 01 1.（2021年天津卷单项选择）What puzzles Lily's friends is ____ she always has so many crazy ideas. A. whether B. why C. what D. when 2. The amazing thing about the spring is ____ the colder the temperature gets, the hotter the spring! （2021新高考1卷语法填空） 3. they also need to be ready to give interviews in English with international journalists . That’s _______they need an English trainer.（2023新高考II卷 ） B why that III: Using structures Exercise 02 Translation 1.尽可能多地练习才是成功的秘诀所在。（Using predictive clause） _____________________________________________ 2.The reason why she was late was that she watched TV till midnight yesterday.（英译汉）。（汉译英） _________________________________________________ 3.What concerned Yuan longping most was that farmers often had poor harvests and sometimes even had a serious shortage of food to eat.（英译汉） ————————————————————————————— To practice as much as possible is where the secret to success lies. 她迟到的原因是昨天晚上看电视看到午夜。 袁隆平最关心的是农民经常粮食欠收，有时甚至出现严重的食物短缺 What concerns you most? Useful expressions : What concerns me most is ... My biggest problem / headache is how/why/when... Exercise 03：Discussion and writing Write a short paragraph about using the phones 1. My feeling/ opinion/ belief/ guess is that… 2. It seems that/as if … 3. The reason why... is that… 4. This/ That is because/ why... 5. My suggestion/ advice/ proposal is that... Thank you IV: Homework 1.mindmap what you've learnt 2.finish the grammar exercises on P62 (WB) 16 $$