Unit 1 Section Ⅱ Learning About Language(课件PPT)-【优化指导】2025-2026学年高中英语选择性必修第二册（人教版2019）

UNIT 1　SCIENCE AND SCIENTISTS (单元主题语境：人与社会——科学与科学家) Section Ⅱ　Learning About Language 表语从句 [观察] 1．One theory was that bad air caused the disease． 2．The other was that cholera was caused by an infection from germs in food or water． 3．The truth was that the water from the Broad Street pump had been infected by waste． [探究] 以上黑体部分在句子中的作用相当于名词，且位于系动词was后作表语，故又被称作____从句。 表语 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 1．常见的可以接表语从句的连系动词有哪些？ ____________________________________________________________________________________________________________________ 2．表语从句常用哪些词连接？ ____________________________________________________________________________________________________________________ be、feel、seem、look、appear、sound、remain、prove、taste、smell、become、keep、turn、go、stay、get等。 表语从句的引导词包括连词(如that、whether)、连接代词(如who、what、which)、连接副词(如when、where、how、why)等。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 一、表语从句的定义 [感知] 1．(2024·新课标Ⅰ卷)That was when I met Gunter． 就在那时，我遇到了冈特。 2．What shocked me was that these beautiful terraces were jointly built by the local Zhuang and Yao people． 让我感到震撼的是这些美丽的梯田是当地的壮族和瑶族人民共同建造的。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 3．It appears to me that he wants to teach us all he knows． 在我看来，他想把他所有的知识都教给我们。 4．When Father came in，it seemed that Tom was eating something． 爸爸进来时，汤姆似乎正在吃东西。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [探究] 1．以上例句中主句的连系动词分别是_________________________。 2．以上例句分别由______________________引导的从句作表语。 was、was、appears、seemed when、that、that、that UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [归纳] 1．表语从句就是在主从复合句中充当表语的从句，放在连系动词之后，用来说明主语是什么或者怎么样。 2．含表语从句的主从复合句的构成：主语＋系动词＋引导词＋表语从句。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [即练] 　单句填空 1．The question discussed at the meeting was _________ it was worth trying． 2．The trouble is _____ I lost the key to my room． 3．I'm a bit sleepy；it's ________ I was up all night． whether that because UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 二、表语从句引导词的用法 (一)that/whether引导表语从句 [感知] 1．(2024·浙江1月卷)The most obvious advantage of online learning is that you can study anywhere and anytime． 在线学习最明显的优势是你可以随时随地学习。 2．The question remains whether they will be able to help us． 问题还是他们能否帮助我们。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [探究] 以上句子中that、whether引导表语从句，引导词在句中均____(作/不作)成分。 [归纳] 1．that引导表语从句时，在句中不充当句子成分，无实际意义，一般不能省略。 2．whether起连接作用，意为“是否”，在句中也不作任何成分。此时主句的主语通常是抽象名词，如question、problem、result、chance、suggestion、reason等。 不作 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 whether 可以引导表语从句，但if不可以。 [即练] 　用适当的连接词填空 1．The trouble is _____ she has lost his address． 2．The good news for small farmers is ________ there will also be opportunities for new kinds of farming． 3．What Tina cares about most is ________ the company provides opportunities for further education． that that whether UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 4．The main question is _________ you want your arms inside or outside the sleeping bag． 5．The fact is ________ we cleaned the lab a few days ago． 6．The question was ______________ the boys would be careful for the instrument． whether that whether UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 (二)连接代词引导表语从句 [感知] 1．Nanning is no longer what it used to be ten years ago． 南宁已经不再是十年前的样子了。 2．The only problem now is who will take charge of the project． 现在唯一的问题是谁将负责这个项目。 3．The problem is whose books they are． 问题是这些是谁的书。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 4．What puzzled him was which room was reserved for him． 使他迷惑不解的是哪个房间是预留给他的。 5．This is just what we are always looking forward to． 这正是我们一直盼望着的。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [探究] 1．以上例句中，黑体词都是连接____，引导表语从句。 2．连接代词在从句中的成分分别为：句1中的what作____；句2中的who作____；句3中的whose和句4中的which作____；句5中的what作____。 [归纳] 连接代词 who、whom、whose、what、which、whoever、whomever、whatever、whichever等除了在句中起连接作用外，在从句中还充当主语、宾语、表语或定语，本身具有词义。 代词 表语 主语 定语 宾语 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [即练] 　单句填空 1．Despite their opinions，I want to learn a foreign language because language is ________ I am interested in and good at． 2．What puzzled me most was ________ book I should choose． 3．The problem is ______ will be responsible for the task in our team． 4．The first thing is ______________ painting will be chosen to be shown on the exhibition． what which who whose/which UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 (三)连接副词引导表语从句 [感知] 1．That was where we camped last time． 那就是我们上次野营的地方。 2．The most exciting moment in his life was when he won the gold medal at the 2022 Winter Olympic Games． 他一生中最激动人心的时刻是他在2022年冬季奥运会上获得了金牌。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 3．Tony saved two people from the burning house．That is why he was given the award by the mayor． 托尼从着火的房子里救出了两个人。那就是他被市长授予这个奖项的原因。 4．The question is how we finish the work within one hour． 问题是我们如何在一个小时内完成这项工作。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [探究] 1．以上例句中，黑体词都是连接____，引导表语从句。 2．连接副词在从句中的成分分别为：句1中的where作____状语；句2中的when作____状语；句3中的why作____状语；句4中的how作____状语。 [归纳] 连接副词when、where、why、how、whenever、wherever、however除了在句中起连接作用外，在从句中还分别充当时间、地点、原因、方式等状语，本身具有词义。 副词 地点 时间 原因 方式 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [即练] 　单句填空 1．You said students should be encouraged to read more．That is _______ I agree． 2．Another time when silence is golden is ________ you are unsure of what to say． 3．(2023·新课标Ⅱ卷)They also need to be ready to give interviews in English with international journalists．This is ______ they need an English trainer． 4．The expert said that his biggest concern about the disease was ______ little we knew about it． where when why how UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 (四)其他引导词引导表语从句 [感知] 1．He fell asleep during the lecture．This was because he got bored with it． →He got bored with the lecture．This was why he fell asleep during it． 他在讲座期间睡着了。这是因为他已经厌倦了。 2．The black clouds are gathering．It looks as though it is going to rain． 乌云正在聚集。看起来好像要下雨了。 3．It sounded as if he believed what I said． 听起来他好像相信了我说的话。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [探究] 以上例句中because、why、as though和as if引导表语从句，在从句中____(作/不作)成分。 [归纳] 1．because、why、as if/though引导表语从句时，有本身的含义，但在从句中并不充当语法成分。 2．because和why引导表语从句通常只用于“This/That/It is/was because/why …” 结构中，because后接原因，why后接结果。 3．as if/though引导的表语从句常置于连系动词look、seem、sound、appear等的后面。 不作 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 ①why和because引导表语从句的区别 because引导的表语从句指原因或理由；why引导的表语从句则指由各种原因导致的后果。 ②reason作主语时的表语从句 主语为名词reason时，表语从句中的连接词要用that，而不用because。 The reason for such a serious accident is that the driver was too careless． 这么严重的一起事故是由司机太粗心造成的。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [即练] 用适当的引导词填空 1．Parents are the people most devoted to us，and that is ______ it is necessary to keep a good relationship with them． 2．He did not see the film last night．That is __________ he had to help his little sister with her homework． 3．Seeing the beautiful scenery along the Li River，you may feel ________________ you were in a fairy tale． why because as if/as though UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 4．The reason why he didn't come was ________ it was raining heavily． 5．One reason is ________ it's easier for a company to attract new employees if it has a casual dress code． that that UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 三、表语从句中的虚拟语气 [感知] [组1] 1．The boss' request is that we (should) achieve the goal we set． 老板的要求是我们要达到我们设定的目标。 2．My suggestion is that we (should) give up the project． 我的建议是我们放弃这个项目。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [组2] 1．It looks as if it is going to snow． 看起来要下雪了。(与事实相符) 2．When a pencil is partly put in water，it looks as if it were broken． 把一支铅笔的一部分放入水中时，它看上去像是被折断了。(与客观事实相反) 3．The girl looked as if she had been turned into a stone． 那个女孩看上去好像已经变成了一块石头。(与过去事实相反) UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [探究] [组1] 主句的主语分别是___________________和________________，表语从句中谓语动词是“_____________________”结构。 [组2] 句1表语从句中谓语动词是__________________；句2表语从句中谓语动词是____________；句3表语从句中谓语动词是___________________。 The boss' request My suggestion (should＋)动词原形 is going to snow were broken had been turned into UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [归纳] 1．在表示“建议、劝说、要求”等的名词，如advice、idea、suggestion、request、proposal等后面的表语从句中，谓语动词用“should＋动词原形”，should可省略。 2．as if/as though引导的表语从句如果是事实，就用陈述语气；如果与事实相反，就用虚拟语气(与现在事实相反，从句谓语动词用过去式，be动词用were；与过去事实相反，从句谓语动词用“had＋过去分词”)。 UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 [即练] 　单句填空 1．My advice to my daughter was that she ______________(make) the most of the time in high school． 2．The manager's requirement was that the work ____________________(finish) at the end of May． 3．There is no one else in the room．It seems as if you ______(be) the first one here． 4．When he rushed into the room，it looked as if it ___________________(damage) by some animals． (should) make (should) be finished are had been damaged UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 Danger is not 1．_______ we expect．However，the truth is 2．______ it often comes suddenly and unexpectedly．How can we get out of danger？There are many answers to this question．The key is 3．_________ we can face danger bravely and calmly． What you must remember is 4．______ you must believe in yourself．Just remember that you can defeat danger．Here is an example． what that whether that UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 Mrs．Green reported that she had saved her kid just as her kid was nearly run over by a car．Mrs．Green weighs only fifty kilograms．She looks 5．_______________ she were weak．However，she said，with the help of several kind passers-by，she managed to lift the car's corner to save her kid．Maybe this is 6．________ a mother's love is about． as if/as though what UNIT 1　SCIENCE AND SCIENTISTS 高中英语　选择性必修　第二册　R 返回导航 课时梯级训练(二) 谢 谢 $$