Unit1 Science and Scientists Discover Useful Structures 课件-2025-2026学年高中英语人教版选择性必修第二册

该高中英语课件聚焦表语从句语法点，以John Snow研究霍乱的案例导入，通过复习表语概念过渡到表语从句，引导学生观察例句中系动词和引导词的用法，搭建从已知到未知的学习支架。 其亮点在于采用“观察-分析-分类-总结”循环教学法，结合高考真题实例提升语言能力，系统梳理系动词类型、引导词功能及虚拟语气规则，培养学生思维品质与学习能力。学生能在实践中掌握语法应用，教师可借助清晰结构高效开展教学。

Welcome to my class Discover useful structure Predicative Clause Unit 1 Science and scientists To learn to use predicative clauses: ldentify predicative clauses, choose proper leading words. To make sentences by using predicative clauses in correct word order. In this class, we‘ll learn.. 3 Lead-in The truth was _________________ that the water from the Broad Street pump had been infected by waste. What’s the truth that he discovered about the cause of cholera? Predicative clause表语从句 Look at the photo , who is he? John Snow. Through the reading passage, Have you known what is the truth…. 在这个句子中，能看出是有几个句子？2个，所以有一个是从句，也就是划线部分，也是我们今天要学习的表从。那到底怎么判断哪里是表从，他又是怎么构成及使用的，OK，with these problems , let‘s begin our new class. 4 Review & Explore Underline the predicative in each sentence. John Snow’s dream is to defeat Cholera. He is a successful scientist. He was famous as the father of modern epidemiology. The result of the research was that the water from the Broad Street pump had been infected by waste. When a sentence serves as predicative ,we call it Predicative Clause. 一个句子常用的两种结构分别是主谓宾和主系表，所以表语的位置在哪里？Think about it，then，read the 4 sentences and underline the…,you have 1 min. 5 Observe &Analyze John Snow’s dream is to defeat Cholera. He is a successful scientist. He was famous as the father of modern epidemiology. The result of the research was that the water from the Broad Street pump had been infected by waste. 系动词：这些句子中用到的系动词就是我们常见Be动词，Which linking verbs can you recall? Who can share?你还能想到哪些其他的系动词？。 6 Observe & Analyze Find more linking verbs (系动词）in the sentences. He finally became a successful scientist. The causes of the disease remain unknown to the public. The results of the experiment sound reasonable. It looks as if it is going to rain. 7 Classify & Summarize 1.连系动词 be (am/is/are/was/were); 2.感官系动词 feel, look, sound, taste, smell; 3.表像系动词 seem, appear (似乎;好像是 ) 4.表状态的系动词 remain, keep, stay; 5.表变化的系动词 become, get, grow, turn. 可以接表语从句的系动词有: 知道了系动词和表从的位置，那我们就对表从的结构一探究竟，翻页 8 Observe & Analyse Find the predicative clauses ,underline the leading words(引导词) and analyse their functions. One theory was that bad air caused the disease. The question remains whether he will be able to help us. He didn’t have breakfast. That is because he got up late. It looks as if it is going to rain. ____在表语从句中 _____成分, 译为____, 起____ 作用, ___ 省略。 （注意：if 不能引导表语从句) 9 Observe & Analyse Find the predicative clauses , underline the leading words and analyse their functions. The problem is who is really fit for the hard job. Tom is no longer what he used to be. The problem is whom we can get to replace her. The important thing is whose name should be put on the top of the list. who, what, whom, whose, which 等在句子中起 ______ 作用外，还可在从句中作 _____、 _____、 _____ 或 ______成分，且各有词义。 10 Observe & Analyse Find the predicative clauses , underline the leading words and analyse their functions. That’s where I can’t agree with you. This is why He didn’t have breakfast. (he got up late.) This is how they overcome the difficulties. The problem is when we can obtain these materials. where, why, how, when 在句子中起 ______ 作用外，还可在从句中作 _____、 _____、 _____ 或 ______状语，且各有词义。 最后观察下语序!!!! 11 Classify & Summarize Leading words of predicative clauses 表从 连接词 从属连词 (不作成分,不可省) That(无实义）, whether（是否）, as if / as though（好像）, because （因为） 连接代词 (作主、宾、表、定) (均有各自意义） what, who, which, whose, whom, whatever, whoever, whichever … 连接副词 (作状语，均有各自意义) when, where, how, why, whenever, wherever… PS: 表语从句一定要用引导词+陈述语序。 Classify & Summarize Leading words of predicative clauses How to use them? 缺什么，补什么 What John Snow showed to the world was _____ cholera could be overcome. how Practice Fill in the blanks with appropriate leading words. 1. The problem is _________ he is willing to help me. 2. That was _______ we camped(露营) last time. 3. He has become_______ he wanted to be ten years ago? 4. It sounds ___________ someone is knocking at the door. 5. I didn’t phone her, and that is ______ she got angry. 6. I didn’t phone her, and that is _________ I got angry with her. where what as if/though why whether because Now let’s pay attention to the last two sentences. 14 Observe & summarize 5. I didn’t phone her, and that is why she got angry. 6. I didn’t phone her, and that is because I got angry with her. That’s why… 意为“那是……的原因”，强调结果 That’s because… 意为“那是因为……”，强调原因 Attention1 两者的区别： 15 The reason why he is late for school is ______ he missed the bus. Why we decided to put off the football match is ______ the weather was too bad. Attention2 that 当主句的主语是 _________ 或 why 引导的 __________时常用 ______ 来引导表语从句，而不用 because. that reason 主语从句 that Observe & summarize 最后观察下语序： 16 My suggestion is _____ we ____________ (start) early tomorrow. 我的建议是我们明天一早就开始。 Attention3 that 当主句的主语是表示建议、命令、要求、计划等名词时，表语从句要用______引导，且从句谓语要用____________________。 (should）+ V.原 that (should) start 建议（suggestion, advice…） 命令（order, command…） 要求（ask, request, demand, proposal…） 计划（plan…） Observe & summarize 最后观察下语序： 17 Practice Fill in the blanks with appropriate leading words. His advice is that she ________________(keep) quiet. The reason why he failed is __________he was too careless. that (should) keep Based on the above, finish this 18 表语 从句 状态类：be/seem/appear/keep/remain/stay 变化类：become/get/turn/grow/fall/come/go 感官类：look/smell/taste/sound/feel 系动词 that：无实义，不可省略 ；whether：表"是否"（不与if互换） as if/though：表"好像"； because：表原因 连接代词 what/who/whom/whose/which 在从句中作主/宾/表/定语 连接副词 when/where/why/how 在从句中作状语 引导词 必须用陈述语序（主语+谓语） 主语表建议/命令/要求；结构should+动词原形（should可省） 虚拟语气 语序 Summary Homework Finish your workbook P17: Ⅰ ~ Ⅱ 20 More Practice Create your writing (2023·全国乙卷书面表达)I have learned the skill of playing the piano. It is simply _______________________________. 我学会了弹钢琴这项技能。仅仅因为它能使我的心情放松。 (2023·新高考Ι卷写作)____________________being randomly grouped isn’t a good idea. 那就是为什么我认为随机分组不是一个好主意. That’s why I think because it can keep my mind relaxed 21 That’s all Thank you! 22 Lavf58.29.100 Bilibili VXCode Swarm Transcoder v0.3.79 $