Unit 4 Looking good,feeling good Grammar and usage 课件-2023-2024学年高一上学期英语译林版(2020)必修第一册

unit 4 Grammar and usage 关系副词引导的限制性定语从句 Restrictive relative clauses(限制性定语从句) with relative adverbs（关系副词） 1.阿杜《哈罗》我想要说的全都写在眼里面。 All ________ I want to say is written in my eyes. that 导入 2.陈小春《算你狠》你要学学那个屡战屡败的陈小春...... You'd better learn from Chen,______ keeps fighting no matter how many times he loses. who 导入 3.梁静茹《宁夏》那是个宁静的夏天，你来到宁夏的那一天。 That's the quiet summer ______you came to Ningxia . when 导入 温故知新(1) What’s the attributive clause? 定语从句 在复合句中，修饰或限定某一________或________的_________叫定语从句。 名词 代词 从句 例：He is the man who I respect very much. 先行词 关系代词 定语从句 关系代词 指代先行词 充当从句成分 whose who whom which tha 物 人 人 物 /人 定 主 /宾 宾 主 /宾 that 物 人/物 主/宾 选择关系代词的方法： 1.找先行词 2.判断在从句中的成分（主/宾/定语？） 做宾语时可以省略！ 温故知新(2) It is normal for teenagers to be slightly overweight and there is no reason _____ they should be worried. 作原因状语 why In a society ______ being thin is often seen as being beautiful, tennagers sometimes turn to extreme methods to slim down quickly. where 作地点状语 温故知新(3) 关系词 ①代替前面的先行词在从句中充当一定的成分 ②把两个句子连接起来构成一个复合句 关系词的作用： 关系代词 关系副词 who,whom,which,that,whose起着代词和连词的作用，在定语从句中充当主语，宾语或定语 when,where,why起着副词或介词短语和连词的作用，在定语从句中充当状语 状语：说明地点、时间、原因、目的、结果、条件、方向、程度、方式和伴随状况等的句子成分叫做状语。 除去五大基本概念和形容词（定语）剩下的成分就是状语。 五大基本概念：主语、谓语、宾语、表语、宾补。 什么是状语？ 由关系副词引导的限制性定语从句 关系副词( relative adverbs )： when where why 关系副词在定语从句中都作状语： when作__________; where作__________; why作__________. 时间状语 地点状语 原因状语 Tips: 区别使用关系代词还是关系副词的方法就是分析定语从句的句子结构，看他们在定语从句中充当的是什么成分。 关系副词when，where，why可以用 “介词+which”代替！ I’ll never forget the day on which I joined the team. Combine two sentences into one. I’ll never forget the day. I joined the team on that day. １. which I’ll never forget the day when I joined the team . When在从句当中作时间状语 When在从句当中作的成分？ 主语 谓语 宾语 缺时间状语on the day 关系副词的基本用法 1. when的用法： We remembered the first day when we entered senior high school. 我们还记得我们刚进入高中的第一天。 作时间状语 I often think of the moment when I first saw her. 我经常想起我第一次见到她的那一刻。 作时间状语 归纳：when指时间，引导的定语从句修饰time、day、month、year、moment等表示时间的先行词，在定语从句中作时间状语。且关系副词when可用表示时间的介词(如on…)+which替代 缺时间状语on the first day 缺时间状语at the moment 1.观察先行词有什么特点？ 2.从句中缺少什么成分？ 即学即练 He will always remember the day _______________his father returned from Beijing. I can not forget the day ______________I first saw her. when/on which when/on which Do you know the reason the sky is blue? 关系副词的基本用法 主语 谓语 宾语 why 缺原因状语for the reason for which 14 2. why的用法： This is the reason why he didn’t come to the meeting. 这就是他为什么不来参加会议的原因。 缺原因状语for the reason 作原因状语 for which The reason why I don’t trust him is that he often tells lies. 我不信任他的原因是他经常撒谎。 缺原因状语for the reason for which 归纳：why指原因或理由，引导的定语从句修饰reason、excuse等的表原因的名词。在定语从句中作原因状语，且可用for which替代 即学即练 合并句子 ① Give me one good reason. I should help you for the reason. Give me one good reason why/for which I should help you. ②Can you tell me the reason? You sold your new car for the reason. Can you tell me the reason why/for which you sold your new car ? 3. where的用法： This is the town where I was born. China is the only country where wild pandas can be found. 作地点状语 缺地点状语in the town 缺地点状语from the country 作地点状语 归纳：where指地点，引导的定语从句修饰place、house、town、city、country、world等表示地点的先行词或如society、situation等表抽象地点的名词。在定语从句中作地点状语。且可用介词+which替代 in which from which 这就是我出生的城镇。 中国是唯一能够找到野生大熊猫的国家。 即学即练 翻译句子 ①这是我们年轻时工作过的农场。 This is the farm where/on which we worked when we were young. ②昨天我参观了父母曾经住过的房子。 Yesterday I paid a visit to the house where/in which my parents once lived. 关系副词 相当于 被代替的先行词 在定语从句中作成分 in, at等介词+which 表示地点的名词 at, in, on, during等介词+which 地点状语 表示时间的名词 时间状语 for+which reason 原因状语 where when why 19 在下列选项中选择正确的关系副词 I went to the company ___________I worked ten years ago. A. where B. when C. why D. how 2. This is the reason __________he was late. A. where C. why D. how 3. I still remember the happy days ____________I lived in the countryside. A. where C. why D. how 4. There are many good websites _______ you can check out the latest news in the science world. 5. There are times _______ I wonder why I do this job. 6. It was in the supermarket ______ she worked that I came across her. A. where B. when C. why D. how A. where B. when C. why D. how A. where B. when C. why D. how Transfer & Create Use relative pronouns to change s1 to a relative clause modifying s2 2.The high school is crowded with concerned students. 1. Jennifer passed out at high school. The high school at which Jennifer passed out is crowded with concerned students. 定语从句除了由关系代词引导外,还可由关系副词when, where, why引导,它们在从句中分别作时间状语，地点状语和原因状语。 The high school where Jennifer passed out is crowded with concerned students. Transfer & Create Use relative pronouns to change s1 to a relative clause modifying s2 2.The classroom is crowded with concerned students. 1. Jennifer passed out in her classroom. The classroom in which Jennifer passed out is crowded with concerned students. 定语从句除了由关系代词引导外,还可由关系副词when, where, why引导,它们在从句中分别作时间状语，地点状语和原因状语。 The classroom where Jennifer passed out is crowded with concerned students. Transfer & Create Use relative pronouns to change s1 to a relative clause modifying s2 2.The farm is crowded with concerned students. 1. Jennifer passed out on a farm. The farm on which Jennifer passed out is crowded with concerned students. 定语从句除了由关系代词引导外,还可由关系副词when, where, why引导,它们在从句中分别作时间状语，地点状语和原因状语。 The farm where Jennifer passed out is crowded with concerned students. Explore & Conclude The farm where Jennifer passed out is crowded with concerned students. The high school where Jennifer passed out is crowded with concerned students. The classroom where Jennifer passed out is crowded with concerned students. 地点状语 地点 activity，point，situation，position，case，scene，condition 介词 关系副词where引导定语从句时，其在从句担任的句子成分是________，此时where就相当于________ +关系代词which，这里的which通常指代的都是表示________的名词，如_______________________________。 情境/场景 Transfer & Create Use relative pronouns to change s1 to a relative clause modifying s2 2. The students couldn’t forget the morning. 1. Jennifer passed out in the morning. The students couldn’t forget the morning in which Jennifer passed out. 定语从句除了由关系代词引导外,还可由关系副词when, where, why引导,它们在从句中分别作时间状语，地点状语和原因状语。 The students couldn’t forget the morning when Jennifer passed out. Transfer & Create Use relative pronouns to change s1 to a relative clause modifying s2 2. The students couldn’t forget October 26th. 1. Jennifer passed out on October 26th. The students couldn’t forget October 26th on which Jennifer passed out. 定语从句除了由关系代词引导外,还可由关系副词when, where, why引导,它们在从句中分别作时间状语，地点状语和原因状语。 The students couldn’t forget October 26th when Jennifer passed out. Transfer & Create Use relative pronouns to change s1 to a relative clause modifying s2 2. The students couldn’t forget the moment. 1. Jennifer passed out at that moment. The students couldn’t forget the moment at which Jennifer passed out. 定语从句除了由关系代词引导外,还可由关系副词when, where, why引导,它们在从句中分别作时间状语，地点状语和原因状语。 The students couldn’t forget the moment when Jennifer passed out. Explore & Conclude 关系副词when引导定语从句时，其在从句担任的句子成分是________，此时when就相当于________ +关系代词which，这里的which通常指代的都是表示________的名词，如_______________________________。 The students couldn’t forget the morning when Jennifer passed out. The students couldn’t forget October 26th when Jennifer passed out. The students couldn’t forget the moment when Jennifer passed out. Transfer & Create Use relative pronouns to change s1 to a relative clause modifying s2 2. The extreme reason was skipping meals. 1. Jennifer passed out for a reason. The extreme reason for which Jennifer passed out was skipping meals. 定语从句除了由关系代词引导外,还可由关系副词when, where, why引导,它们在从句中分别作时间状语，地点状语和原因状语。 The extreme reason why Jennifer passed out was skipping meals. 关系副词why引导定语从句时，其在从句担任的句子成分是________，此时why就相当于________ +关系代词which，这里的which通常指代的是________。 Explore & Conclude Teamwork and peer review 以一个人或物为主题，用两个简单句描述其相关信息，再将其中一句改写为由定语从句修饰另一句中的主题。注意：两句话中都要包含主题。 参考话题： a day (1st day of high school); a place (your high school); a person (your monitor) 如以a person(Jennifer)为例 1.Jennifer passed out at high school. 2.Jennifer skipped meals in the morning. →Jennifer who skipped meals in the morning passed out at high school. Apply Sentence Writing I’ll never forget the days ____________ we worked together. I’ll never forget the days ___________we spent together. when/in which that 4. 如何区分关系代词和关系副词引导的定语从句 先行词为时间类名词，一定用关系副词when吗？可以用that/which吗? 缺时间状语 in the days 缺spent的宾语 the days ★不能看到表时间的先行词就用when，要看从句缺什么成分！如从句完整不缺主语、宾语、定语时，用关系副词when 先行词为地点类，一定用关系副词where吗？可以用that/which吗？ This is the house ___________ he was born. This is the house ____________ was set up by his parents. where that/which 缺地点状语 缺主语 ★不能看到表地点的先行词就用where, 要看从句缺什么成分!如从句完整不缺主语、宾语、定语时，用关系副词where 先行词为原因类，一定用关系副词why吗？可以用that/which吗？ This is the reason ____________he was late. This is the reason ____________he told us. why that/which 缺原因状语for the reason 缺told的直接宾语 ★不能看到reason 就用why，要看从句缺什么成分!如从句完整不缺主语、宾语、定语时，用关系副词why 在下列句子中填入合适关系代词或关系副词，每空一词 1. I still remember the day ___________ Jennifer fainted at school. 2. I still remember the day ___________ Jennifer spent at hospital. 3. This is the hospital ___________ Jennifer got her treatment. 4. This is the hospital ___________ Jennifer visited yesterday. 5. This is the hospital ___________ treated Jennifer. 6. This is the reason ___________ Jennifer explained. 7. This is the reason ___________ Jennifer skipped meals. Practice & Discuss 结合例题思考在先行词确定时，如何区分定语从句用关系代词还是关系副词？ when (which/that) where which/that (which/that) why (which/that) 1. (2019天津卷) Their child is at the stage ______ she can say individual words but not full sentences. A. why B. where C. which D. what 2. (2019江苏卷) We have come into an age _______ dreams have the best chance of coming true. A. which B. what C. when D. that 3. (2018江苏卷) Self-driving is an area ____ China and the rest of the world are on the same starting line. A. that B. where C. which D. when 4.(2021年天津卷) At the Chinese art festival, there are different places ________ artists show their skills and teach the visitors. A. where B. which C. that D. when Practice & Discuss 表示时间、地点及原因的名词作先行词时，先行词在定语从句中作状语时，应用关系副词；若先行词在定语从句中作主语、宾语或定语时，则应用关系代词。 方法：分析从句句子成分 总结 区别使用关系代词还是关系副词的方法 I will never forget the days __________ we spent together. I will never forget the days __________ we stayed together. The reason _________ he explained at the meeting was not accepted. The reason _________ he was late was that he missed his train. Can you recognize the house ________ you used to live with your parents? Can you recognize the house _________ Tom sold three years ago? 用that, which, when, where, why填空 that/which when that/which why where that/which 38 做题技巧 一、找：看主句，找先行词，指人还是指物。 二、判：判断从句成分结构是否完整。 句子不完整：缺少主、宾、表、定用关系代词； 句子完整：只是缺少状语用关系副词。 三、看： ①看是否有特殊情况； ②看定语从句中的动词是及物动词还是不及物动词，及物动词后无宾语，用关系代词；不及物动词则用关系副词或介词+关系代词。 做题技巧 四、(还原法)---如果先行词代入从句中不需要加介词用关系代词，需要额外加介词用关系副词。 举个 This is the factory ___________I visited last year. This is the factory_________he used to work. We’ll never forget the day________we work(不及物动词)in the village. We’ll never forget the day____________we spent(及物动词) in the village. （that/which） where when that/which (从句缺少宾语，故用关系代词；先行词是物，可选用that/which/×;无特殊情况，两个都可以选。) （从句完整不缺成分，故用关系副词；the factory是地点，故用where。） 1. This is the very place _________ he lived for 5 years. 2. The reason __________ he told me is reasonable. where Use relative pronouns and relative adverbs to fill in the blanks. that/which Practice 3. I’ll never forget the days __________ we spent together. 4. China is the only country _____ wild pandas can be found. 5. He wanted to know the reason _____ Tom was late for the meeting. 6.I’ll never forget the days ______ we studied together. that/which where why when II. 介词的选用原则 根据定语从句中 谓语动词的固定搭配来决定。 ①This is the book on which I spent 8 yuan. ②This is the book for which I paid 8 yuan. spend money on sth.为固定搭配 pay money for sth.为固定搭配 2)根据 先行词的搭配习惯来决定。 ①I remember the day on which I joined the League. ②I remember the days during which I lived here. ③I remember the month in which I stayed there. 强调在具体某一天要用介词on 强调在某几天时间内要用介词during 在month前介词要用in 3) 根据从句中动词与先行词的_________。 Is that the newspaper for which you often write articles? write sth for 4) 根据从句中形容词的__________。 Can you explain to me how to use these idioms about which I’m not sure？ be sure about 逻辑关系 习惯搭配 5)“介词+关系代词”前还可有some, any, none, all, both, neither, many, most, each, few等代词或者数词。如： ①He loves his parents deeply, both of whom are very kind to him. 他深深地爱着他的父母，他们俩待他都很好。 补充： 含有介词的短语动词一般不拆开，介词仍放在短语动词的后面。如：look for, look after, take care of ,turn in,pay attention to,depend on,listen to... ①This is the watch (which / that) I am looking for. ②The babies (whom / who / that) the nurse is looking after are very healthy. 1. Do you like the book _________ she spent $10? 2. Do you like the book ________ she paid $10? on which Use proper prepositions and relative pronouns to fill in the blanks. for which Practice one 3. Do you like the book ______________she often talks? 4. China has a lot of rivers, the second longest _______ is the Yellow River. about/of which of which 5. The man ________ I spoke on the phone last night is very good at wrestling. 6. This is the book _______ I am looking for. 7. The sun gives us light and heat, which we can’t live. 8.In the basket there are quite many apples, some ____________ have gone bad. to whom which without of which C: Tomorrow is a particular day his daughter will get married. D: I went back to the place _________ I was born and grew up. A:I’ll never forget the day which she said good-bye to me. B: Who can give me the reason which he hasn’t turned up yet? on for when why on which when in which where 1.定语从句中关系副词有？ 2.关系副词在定语从句中作？语 3.关系副词when, where和why也可用“？+which”来代替，要注意其先行词（名词）与介词的合理搭配。 when =“at/in/during…+which” where =“in/at/on…+which” why =“for + which” Review 4 并非先行词是表示时间、地点和原因的词时不是都用when, where, why， (还原法)---如果先行词代入从句中不需要加介词用关系代词，需要额外加介词用关系副词。 I still remember the day ________ I came here. 2. I still remember the day _____ I came here. 3. I still remember the day ____________ we spent together. on which when (which/that) I went to the place ________ we worked ten years ago. 2. I went to the place ______ we worked ten years ago. 3. I went to the place ___________ we visited ten years ago. at which where (which/ that) This is the reason ______________ he was late. 2.This is the reason ____________ he explained to me. 3. This is the reason__________ can explain his being late. why / for which (which / that) which / that 思考 是否所有的介词+关系代词都能用关系副词代替? 1.The painting (________ I looked) was painted by me. 2.The book (___________ I heard) was written twenty years ago. at which about which 3.The pen (__________ she wrote that book) can now be seen in a museum. 4.Kunming is a beautiful place ( _____________) flowers are seen all the year round. 5.Yesterday we went to visit the house ( _____________ ) the great writer used to live. with which where/in which where/in which 6. I will never forgot the day (_____________ ) I first met you on the ship. 7. The film (____________I fell asleep) was very boring. 结论：只有当 “介词+关系代词”充当？时，才能用关系副词代替。 on which/when during which Below is part of a magazine article about sleep problems. Find the sentences with restrictive clauses in the article and fill in the box below. The first one has been done for you. Restrictive relative clauses with relative adverbs Exploring the rules Do you remember a time when you had no worries stopping you from getting a good night’s rest? Unfortunately, your happy childhood is probably a thing of the past. A recent survey has found that many people suffer from sleep problems. Some are unable to fall asleep, some wake up in the middle of the night, and others simply do not get enough sleep. One of the reasons why people fail to get a good night’s sleep is pressure from school or work. Noise pollution and light pollution in big cities may also contribute to sleep problems. In the short term, people with sleep problems often feel tired and have trouble concentrating. stop sb. from doing sth.阻止..做 遭受 睡着 醒来 n.压力 有助于 从短期来看 have trouble doing 做什么有困难 In the long term, they may be at increased risk of having a poor memory, being overweight and suffering a heart attack. Sleep problems are especially dangerous for teenagers. They are still growing, and night is the time when their bodies grow faster. Teenagers who do not sleep well may experience situations where body development slows down, and their health suffers. So, if you have trouble getting a good night’s sleep, it might be time to make some changes in your lifestyle. 处于已经增长风险之下 从长期来看，… n.记忆 心脏病 做出…改变 have trouble doing 做什么有困难 Mind Map waking up enough sleep pressure light pollution concentrating overweight slows down suffers a time a reason which 介词 1. I did not perform well at school last week. The reason was my poor-quality sleep. __________________________________________________________________________________________________ 2. I miss those days. I used to sleep really well in those days. _________________________________________________ Applying the rules Rewrite the following sentences using relative adverbs or “preposition + which”. The reason why / for which I did not perform well at school last week was my poor-quality sleep. I miss those days when / on which I used to sleep really well. 3.The hospital is near my home. I visited a doctor for advice on sleep problems in that hospital. ____________________________________________________________________________________________________ 4. I still remember that afternoon. That afternoon I fell asleep on the bus and went past my stop. __________________________________________________________________________________________ The hospital where / in which I visited a doctor for advice on sleep problems is near my home. I still remember that afternoon when / on which I fell asleep on the bus and went past my stop. Applying the rules Complete the passage in B2 on Page 49 with correct relative pronouns or relative adverbs where necessary. Possible answers: Everyone knows that the amount of quality sleep (1) ____________ we get is important to us. How can we get a better night’s sleep? Here are some tips for you. （that/ which） n.数量 质量睡眠 Tip 1: Try to go to bed and wake up around the same time each day. This helps set the body’s “clock”. Try to stick to your sleep schedule at the weekend too, even though weekends are probably the time (2) __________________ you feel like a lie-in. Tip 2: Make your bedroom a place (3) _________________ you feel comfortable. Your bedroom needs to be cool, dark and quiet so you can sleep soundly. when/ at which where/ in which Applying the rules 生物钟 坚持 睡懒觉 adv.安心地 Tip 3: Avoid drinks (4) __________________ may keep you from sleeping, such as coffee and tea. Tip 4: Clear your head of stress and worry from your day before bedtime. These negative thoughts are one reason (5) __________________ you stay awake after the light goes off. that/ which why/ for which Applying the rules keep sb from… 防止sb.做… v.清理 熄灯 高考链接 【2020江苏】Many lessons are now available online, from _______ students can choose for free. whose B. which C. when D. whom B (2019江苏) We have entered into an age _______ dreams have the best chance of coming true. which B. what C. when D. that 【解析】考查定语从句。句意：我们已经进入到了一个时代，在这个时代梦想实现的机会最大。句中先行词为 an age （一个时代），且先行词在从句中做时间状语，所以关系词用 when 。 故选 C。 C (2019天津) Their child is at the stage __________ she can say individual words but not full sentences. why B. where C. which D. what 【解析】考查定语从句。句意：他们的孩子正处于能说单个单词而不能说完整句子的阶段。句中 she can say individual words but not full sentences 是一个定语从句，先行词是 the stage ，关系词在定语从句中作地点状语，用关系副词 where ，故选 B 。 B 【 2019· 新课标 I 卷 · 短文改错】 One afternoon where I was in primary school, I was walking by the school playground. 【答案】 将where改成when 【解析】考查定语从句。先行词 one afternoon 表示时间在定语从句中作状语，所以关系词使用 when 。故将 where 改为 when 。 答案解析： 1. 先行词“ reason”表原因，所以用“ why”引导定语从句。 2. 先行词有“time、moment、 day、month、 year、period”等表示时间的意思时，用“ when”引导定语从句。 3. 先行词“ hospital”是一个具体的地点，所以用“ where”引导定语从句。 4. 先行词“ afternoon”表示具体的时间， 所以用“ when”引导定语从句。 Everyone knows that the amount of quality sleep (1)___________ we get is important to us. How can we get a better night’s sleep? Here are some tips for you. Tip 1: Try to go to bed and wake up around the same time each day. This helps set the body’s “clock”. Try to stick to your sleep schedule at the weekend too, even though weekends are probably the time (2)________ you feel like a lie-in. The last part of the magazine article about sleep problems gives tips on how to sleep better. Complete the passage with corrcet relative pronouns, relative adverbs or “preposition + which” where necessary. (that / which) when / at which Tip 2: Make your bedroom a place (3)_______________ you feel comfortable. Your bedroom needs to be cool, dark and quiet so you can sleep soundly. Tip 3: Avoid drinks (4)_______________ may keep you from sleeping, such as coffee and tea. Tip 4: Clear your head of stress and worry from your day before bedtime. These negative thoughts are one reason (5)________________ you stay awake after the light goes off. where / in which that / which why / for which 1. This is the place _____ I was born. 2. Beijing is the city _____ I was born. 3. I remember the day ______ I first met him. 4. Can you tell me the reason _____ you lied to me? 5. This is the reason______ I was late for school. Fill in the blanks with “where”, “when” and “why”. where where when why why 答案解析： 1. 先行词“ place”指地点，所以用“ where”引导定语从句。 2. 先行词“ city”指地点，所以用“ where”引导定语从句。 3. 先行词“ day” 指时间，所以用“ when”引导定语从句。 4. 先行词“ reason”指原因，所以用“ why”引导定语从句。 5. 同第4题。 定语从句只能用that的情况 拓展 1、定语从句修饰的词（即先行词）前面有形容词最高级时： This is the best film that I have seen. 这是我看过的最好的电影。 先行词是film，前面有the best修饰它，这时候只能用that，强调“最好的”。 2、先行词被the very / the only / the same / the last等修饰时： She is the only girl who has got a prize. 她是唯一得奖的女孩。 先行词是girl，前面有the only修饰它，这时候只能用that，强调“唯一一个”。 3、先行词被序数词修饰时： The first place that they visited was the Big Ben. 他们参观的第一个地方是大本钟。 先行词是place，前面有the first修饰它，这时候只能用that，强调“第一个” 4、先行词正好是anything / everything / nothing / few / all / none / little / some等词时： All that can be done has been done. 能做的都做了。 先行词是all，这时候只能用that，强调“所有的”。 There is little that I can do for you. 我能为你做的很少。 先行词是little，这时候只能用that，强调“没有、很少”。 5、先行词前面有who，which等疑问代词时： Who is the man that is standing there? 站在那里的那个人是谁？ 先行词是man，但前面有疑问词who，这时候只能用that。我们可以认为，这是英语中为了避免重复而做出的限定。英语表达的一个特征就是不喜欢重复，所以，在一个场景下，表达相同含义时，通常会用很多同义词或近义词。 6、先行词既有人，也有物时： The writer and his work that you told me are really famous. 你告诉我的那位作家和他的作品非常有名。 先行词有writer和work，一个是人，一个是物，为了统一，这时候我们不能用who或which，只能用that。 ●Time The Friday of the second full week of March ●Aims To make people understand the importance of good and healthy sleep. To draw society’s attention to sleep problems ●Activities Discussions and talks about the importance of healthy sleep B3 Read the information below about World Sleep Day. Then write a short paragragh using restictive relative clauses where necssary. The beginning has been written for you. World Sleep Day In a society where people are under a lot of pressure, sleep problems have become very common... You may begin like this In a society where people are under a lot of pressure, sleep problems have become very common. That is the reason why World Sleep Day is celebrated every year an the Friday of the second full week of March. Its aims are to make people understand the importance of good and healthy sleep and to draw society’s attention to sleep problems. It is a time when people have discussions and give talks about the importance of healthy sleep. Sample: Lavf58.20.100 Lavf58.20.100 Lavf58.20.100 $$