Unit2 Section2 Using language(课件PPT)-【精讲精练】2024-2025学年高中英语选择性必修第三册（外研版2019）

Unit 2　A life's work Section Ⅱ　Using language 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 目 录 语法精讲 技能培养 01 知识整合 核心突破 02 CONTENTS 知能达标训练 04 随堂演练 能力提升 03 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 语法精讲 技能培养 01 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 13 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 知识整合 核心突破 02 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 随堂演练 能力提升 03 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 点击进入Word 知能达标训练 04 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 谢谢观看 返回目录 Unit 2　A life's work 英语·选择性必修 第三册(配WY版) 1 表语从句 一、含义 名词性从句包括主语从句、宾语从句、表语从句和同位语从句。本单元主要讲解表语从句，在复合句中充当表语的从句称为表语从句，一般位于连系动词(be，look，remain，seem等)之后。这种从句往往是进一步对主句的主语进行解释说明。 引导表语从句的连接词有： 连接词 that, whether, as if/as though, because等 连接代词 what, who, whom, whose, which，whatever等 连接副词 when, where, how, why等 二、用法 1．that和whether引导表语从句 that引导表语从句时仅起连接作用，无实际意义，在从句中不作任何成分，通常不可省略。whether引导表语从句时起连接作用，意为“是否”，但在从句中不作任何成分。注意：if不能引导表语从句。 ◆The question, however, is whether this is what the developing countries need the most. 然而，问题是这是否是发展中国家最需要的。 ◆The reason why some time­honoured brands have survived fierce competition is that they are willing to take on challenges. 一些老字号之所以能够在激烈的竞争中存活下来是因为它们愿意接受挑战。 [即时演练1]——单句语法填空 (1)My suggestion is that students should try multiple ways when learning English so that they can find the way which fits them most. (2)The amazing thing about the spring is that the colder the temperature gets, the hotter the spring! (3)No children make no mistakes while they are growing up and the most important thing is whether they can learn from the mistakes. 2．连接代词引导表语从句 连接代词what, who, whom, which, whose等引导表语从句时，除了在句中起连接作用外，在从句中作主语、宾语、表语或定语等成分。 ◆China is becoming stronger and stronger.It is no longer what it used to be. 中国正变得越来越强大， 不再是过去的样子了。 ◆The problem is who can complete the difficult task within two days. 问题是谁能在两天之内完成这项困难的任务。 [即时演练2]——单句语法填空 (1)His puzzle is which dictionary is of greater help to English beginners. (2)The trouble is who is qualified to take over the business while the manager is absent. (3)As a member of society, I am aware that being responsible is what it takes to make a better society. 3．连接副词引导表语从句 连接副词when, where, how, why等引导表语从句时，除在句中起连接作用外，在从句中还分别充当时间、地点、方式、原因状语。 ◆This is where we usually think it's easier to just give up. 这就是我们通常认为更容易放弃的地方。 ◆The best moment for the football star was when he scored the winning goal. 对这名足球明星来说，最美好的时刻就是他踢进制胜球的时候。 ◆The problem is how the part is made to serve the present and foreign things are made to serve China. 问题在于如何将这部分用于当今时代，如何使外国的东西服务于中国。 [即时演练3]——单句语法填空 (1)By boat is the only way to get here, which is how we arrived. (2)The most exciting moment was when his son was admitted to Peking University. (3)With the number of cars increasing rapidly in cities, a major problem is where the cars can be parked. (4)It's really important to hear what experts say and that's why we've invited Emma here. 4．as if/as though, because等引导表语从句 as if/as though引导的表语从句常置于系动词 look, seem, sound, be, become 等后面。because引导的表语从句常见于“This/That/It is/was because ...”句型中。 ◆When a pencil is partly in a glass of water, it looks as if it were broken. 当一支铅笔的一部分放在一杯水里时，它看起来好像断了。 ◆It is reported that a huge percentage of bird species are in danger.It's because their habitats or homelands are disappearing. 据报道，大部分鸟类正处于危险中。这是因为它们的栖息地或家园正在消失。 ◆The thick smog covered the whole city.It was as if a great black blanket had been thrown over it. 厚重的烟雾笼罩了整个城市，好像把一块大黑毯盖到了它的上面。 (1)as if/as though引导的表语从句所述的是事实或极有可能发生的情况，从句用陈述语气；所述的是非真实的情况，从句用虚拟语气(表示与现在事实相反时，从句动词用一般过去时，be动词用were；表示与过去事实相反时，从句动词用过去完成时；表示与将来事实相反时，从句动词用would/could/might＋动词原形)。 (2)三个易混的表语从句： ①“This/That/It is why＋表语从句(表结果)”意为“这/那就是……的原因”； ②“This/That/It is because＋表语从句(表原因)”意为“这/那是因为……”； ③“The reason why ...is that＋表语从句”意为“……的原因是……”。 [即时演练4]——单句语法填空/完成句子 (1)a.She has a baby to take care of.That's why she often comes late. b．She often comes late.That's because she has a baby to take care of. c．The reason why she often comes late is that she has a baby to take care of. (2)他们说话声音很大，好像周围没人似的。 They talk very loudly as if nobody were around　. [核心词汇] 1．trial n．试验；考验；审判 vt.测试(能力、质量、性能等)；试验；试用 Many drugs were found by much trial and error. 许多药物都是经过反复试验后才被发现的。 on trial 在试用；在受审 by trial and error 反复试验(以得出最佳结果) [练通]——单句语法填空 (1)You can have the equipment on trial, and if you don't like it you can give it back. (2)I learnt most of the cooking skills by trial and error. [写美]——应用文佳句之劝慰信 (3)海伦·凯勒曾在她的文章中写道，只有通过考验和苦难的经历才能获得成功。 Helen Keller ever wrote in her article that only through experiences of trial and suffering can success be achieved　. 2．back down 退让；认输；放弃 (教材原句)Spending years apart from his family and enduring the extreme conditions of the Gobi desert, he refused to back down from his responsibilities and kept on conducting scientific research. 他与家人分别多年，忍受着戈壁沙漠的极端条件。他拒绝放弃自己的责任，继续进行科学研究。 back away (from) 躲开；(因害怕而)后退 back off 后退；放弃；不去管 back up 支持；备份 [练通]——用back的相关短语填空 (1)Go ahead.Take a chance.And I will back you up　.I believe you will make it. (2)They request that the spectators back off 100 meters to the north. (3)Instead, stand up and back away slowly, without looking the bear in the eyes. (4)Neither side will back down because both believe they are right. Ⅰ.单句语法填空 1．What puzzles Lily's friend is why she always has so many crazy ideas. 2．The problem may be that　， in our offices, we can't stop ourselves from getting drawn into others' conversation while we're trying to focus. 3．You say watching TV or surfing the Internet at home is wonderful.That's where I don't agree.I think you'd better go out for a walk. 4．The question discussed at the meeting was whether it was worth trying. 5．— I have a headache. — It is because you have slept too much these days. 6．What concerns parents most is which activity benefits the children most. 7．The most important thing is how we can get through the difficult times. 8.Obeying the traffic rules is what all of us should pay attention to in particular. 9.The problem is who is really fit for the hard and challenging job in our office. 10.The best moment for athletes in the Olympic Winter Games was when they won the medals for their own countries. Ⅱ.完成句子 1．关键是我的父母是否同意我的看法。 The point is whether my parents agree with me　. 2．上一次我们玩得很开心是我们参观水上乐园的时候。 The last time we had great fun was when we were visiting the Water Park. 3．我们老师给的建议是我们应该每天练习读英语。 The suggestion given by our teacher is that we (should) practise reading English every day　. 4．他迟到的原因是他错过了今早的第一趟火车。 The reason why he was late was that he missed the first train this morning. 5．她积极参加各种课外活动，那就是她能够保持健康的原因。 She takes an active part in various after­school activities, and that's why she can keep fit　. $$