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

表语从句 Predicative Clause Learning targets 1.Discover the regulation and learn to judge where the predicative clause is . 2.Be familiar with the linking verbs and try to tell their functions. 3.Be able to choose the linking verbs correctly and then use them fluently. Point out the function of each noun in the following sentences: 1.The world loves nature. 2.Knowledge is power . 3.We Chinese are peace- loving. subject object predicative subject subject apposition predicative Review 3 主语从句在功能上相当于名词 主语 { His job is important. What he does is important. 主语 { His story is interesting. What he said is interesting. 一、主语从句的概念 从句在复合句中作主语的名词性从句， 通常放在主句谓语动词或be 动词之前。 二、主语语从句三要素 引导词（连接词） 语 序 时 态 Review 定义 引导词 注意点 01 02 03 CONTENT 目录 表语从句的定义 PART 01 The person stood in front of you just now is headmaster. The door remained closed. The house looks old. The situation went worse. predicative linking verb subject+linking verbs+ predicative 1. The definition of predicative clause. The question is who will do it. The question is difficult. 在复合句中充当表语的从句叫表语从句。位于主句的系动词之后，对主语进行解释、说明，使主语的内容具体化。表语从句必须用陈述语序。 （ 表 ） （ 表 ） 表语从句 2. The structure of predicative clause. 主语 + 系动词 + 引导词 + 简单句 This is why he did it. e.g.What I want to say is that I am tired. 表语从句 表语从句的判断 The judgment of the predicative clause 系动词后的成分为表语。系动词后的从句为表语从句 系动词主要是be动词（am, is, are, was, were)，意为“是”。 其它系动词： 1)持续系动词（表示主语持续或保持一种状况或态度）：keep, remain, stay, stand 2) “像”系动词（表示看起来像）：seem, appear, look 3)感官系动词：look, feel, smell, sound, taste 4)变化系动词（主语变成什么样）：become, grow, turn, fall, get, go 5)终止系动词（主语已终止动作）：prove, turn out The fact was that he had forgotten about it. Everything remained as it used to be in this room. She looks as if she were ill. The trouble was whether we could manage it ourselves or not. The problem is not who will go, but who will stay. This is how they overcame the difficulties. He missed the lecture. It was because his flight was delayed. Predicative Clause Task Two: Circle the conjuction of each predicative clause. Task One: Underline the linking verbs. 表语从句的引导词 PART 02 引导词 Conjunction words 引导词 用法 从属连词 that 无成分，无意义 Whether 无成分，意为“是否” 连接代词 what,which,who,whom, …+ever, whose 在从句中充当主语，宾语，表语，定语 连接副词 how, when, where, …+ ever, why 在从句中充当状语 其它连接词 because, as if ,as though 因为，好像，似乎 Tip: 缺什么补什么，什么都不缺用that（what 所......的 ） 即学即练 learning and practice This is __________I want. My English is limited. This is _______I hate reading English books. The village is _________ I used to spend my holiday. It is ___________ I really love the way he behaves. The trouble is __________ we are short of funds. My problem is __________ coat is suitable for me. I ‘ d like to start my own business—that’s ________ I want to do if I had the money. What I want to know is _______will support me. what where why because that which what who Bradley Hand ITC 15 表语从句的注意点 PART 03 The question is how can I make you understand the knowledge. The question is how I can make you understand the knowledge. Rule 1 : 表语从句和宾语从句、主语从句一样，要用陈述语序：主语+谓语。 表语从句的语序 Bradley Hand ITC 17 It is where he lives in . It is where he lived in 10 years ago. Rule1 主句用现在时或将来时，从句可用任何时态， 根据实际情况而定。 表语从句时态 2.如果主句是过去的时态（一般过去时，过去进行时）， 从句的时态一定要用相对应的过去的某种时态 （一般过去时，过去进行时，过去将来时，过去完成时） Her wish was that she could lose weight soon. It looked as if it was going to rain. The question was whether his father would come back the next day. The reason why he was late was that the train had already left. 表语从句的注意点 The grammar rulers of the predicative clause Rule 2 : 表语从句的引导词没有if !!! The question is if it is worthwhile to do it. The question is whether it is worthwhile to do it. 只用whether ,不用if的情况 Whether to do Whether……or not 介词后的宾语从句 从句：句首的主语从句，表语从句，同位语从句 Bradley Hand ITC 20 表语从句的注意点 The grammar rulers of the predicative clause Rule 3 : 表语从句的虚拟语气 My proposal is that we (should) start early tomorrow. I propose that we (should) start early tomorrow. It is proposed that we (should) start early tomorrow. 在表示“建议，劝说，命令”的名词 idea, advice, 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 Bradley Hand ITC 21 表语从句的注意点 The grammar rulers of the predicative clause Rule 4 : as if/as though 引导的表语从句常跟在look, seem, sound, feel等后面 语气： 若表示真实情况：用陈述语气 若表示非真实情况：用虚拟语气 Dark clouds are gathering. It looks as if it’s going to rain. It seemed as if the night would never end. Bradley Hand ITC 22 表语从句的注意点 The grammar rulers of the predicative clause Rule 4 : as if/as though 引导的表语从句的虚拟语气： 若跟现在事实不符：过去式（be动词用were） 若跟过去事实不符：had done 若跟将来事实不符：would/could+动词原形 The little boy talks as if he knew everything in the world. He felt as if he had met this young lady for a long somewhere. Bradley Hand ITC 23 即学即练 learning and practice My suggestion is that we __________ (go) to hospital at once. When a pencil is partly in a glass of water, it looks as if it _______(be) broken. My idea is that we ___________(get) more people to attend the conference. The little girl talked as if she ___________(be) a grown-up. She looks as if she _________(be) ten years younger. should go were should get had been were Bradley Hand ITC 24 (1) That’s because he didn’t understand me. (2) It’s why he got angry with me . 那是因为他不理解我。 那正是他对我生气的原因。 (强调原因） （强调结果） 1、句型：That/It is /was because …… 那是因为…… That/It is /was why…… 那是……的原因 Rule5:由从属连词because, why引导的表语从句 2、句型：the reason why……is that…… …的理由是…… why引导定语从句 That/It is /was why…… 那是……的原因 why引导表语从句 (1) The reason why he was late is that he was ill. 他迟到的理由是他病了。 注意： 主句主语为reason, 只能用that引导表语从句，不可用because. (2) It’s why he got angry with me . 那正是他对我生气的原因。 1.The reason why he failed is ________he was too careless. A. because B. that C. for D. because of 2.This is ___ Sara was late for the meeting. A. why B. what C. how D. That 3. The reason is ___ he is unable to operate the machine. A. because B. why C. that D. Whether B C A 即学即练 learning and practice 1.He is careless and irresponsible. That was _______ he was fired. 2.He was fired. That was _________ he is careless and irresponsible. 3. The reason _______ he was fired was ________ he was careless and irresponsible. why because why that Bradley Hand ITC 28 1.__________ we will go camping this weekend depends on the weather. 2. It is uncertain ________side effect the medicine will bring about, although about two thousand patients have taken it. 3. Tom came late for the meeting. That was ________ he was ill 4. Faced with challenges, you should believe your courage is_________makes a difference. 5.It is obvious ________he took my umbrella by mistake. 6.Your support is important to our work.______ you can do helps. Whether what why what that whatever 7. _______ is reported in the newspaper is that seventeen climbers have been killed in the snowstorm 8. The problem is ________ can take the place of her. 9. _________ he is still alive makes all of us shocked. 10. These teenagers don’t know much of the world yet, and that’s ___________ they are so easily taken in. What who That why Summary： 1. 表语从句的结构: 主语 + 系动词 + 引导词 + 简单句 2. 引导词: ｛ 连词：that,whether,as,as if/though,because 连接代词：who,what,which,whom,whose...+ever 连接副词：when,where,how,why,...+ever 3. 注意点: 3）if 不引导表语从句。 4）表语从句的虚拟语气。 1）语序:连主谓。 2）that引导表语从句时不能省略。 表语从句 HOMEWORK Finish the related exercise on page11 $$