2015-2016学年高一英语教学课件：UNIT5《CANADA——“THE TRUE NORTH”》第2课时 (新人教版必修3).ppt

1、Canada“The True North”Unit 5第二课时 Learning about Language同位语从句Unit 5课堂要点探究2课堂达标验收3课前新知预习1课 时 作 业4课前新知预习 观察并研究下列句子，写出引导词引导何种从句。The thought that they could cross the whole continent was exciting.()Some people have the idea that you can cross Canada in less than five days,but they forget the fact that C

2、anada is 5,500 kilometres from coast to coast.()The girls were surprised at the fact thatocean ships can sail up the Great Lakes.()答案：同位语从句 同位语从句 同位语从句课堂要点探究 一、基础点拨(一)定义 在复合句中，跟在一个名词后对其做进一步解释说明的从句叫做同位语从句。(二)可接同位语从句的名词 同位语从句说明的名词大多是抽象名词，同位语从句的作用便是对这种包含抽象意义的名词进行解释说明。常见的可接同位语从句的名词有：news，fact，idea，hope，

3、thought，order，belief，doubt，message，promise，question，reply，suggestion，advice等。(三)同位语从句的引导词及其功能引导词功能连接词that/whether引导从句，但在从句中不作成分，不能省略。that无意义；whether有“是否”之意连接代词what，which，who，whom，whose引导从句，在从句中充当主语、宾语和表语连接副词when，where，how，why引导从句，在从句中充当状语 The vain man always has the idea that he should control every

4、thing.(that引导同位语从句，从句意义完整)这个自负的人总是认为他应该控制一切。I still have no idea why they left the party without a word last night.我仍然不知道昨晚他们为什么没说一句话就离开了宴会。(why引导同位语从句，在从句中充当状语，表示“为什么”)名师点拨 同位语从句的位置：同位语从句一般跟在所说明或解释的名词后面。但有时也可以不紧跟在它所说明的名词后面，而是被别的词隔开。The news came finally that the national team had won the game.国家队赢得

5、比赛的消息终于传来了。(that引导同位语从句，修饰the news，被谓语动词came隔开)Theres a feeling in me that well never know what a UFO is.我有一种感觉，我们永远都无法知道UFO是什么。(that引导同位语从句，修饰a feeling，被in me隔开)二、难点突破(一)学习同位语从句应注意的问题 1表达“是否”的概念时，一般用whether不用if引导同位语从句。She was in doubt whether she was right.她对她是否正确拿不准。2当主句的谓语较短，而同位语从句较长时，同位语从句常后置，构成

6、分隔式同位语从句。Word came that the novel hit the whole country instantly.有消息传来，这本小说瞬间轰动全国。3在某些名词后的同位语从句中，其谓语动词应用虚拟语气形式，即(should)动词原形。常见的这类名词有insistence(坚持)，order(命令)，demand(要求)，advice(建议)，proposal(建议)，request(请求)。She made a request that we should help her.她恳求我们帮她的忙。(二)定语从句与同位语从句的区别 1定语从句中的that和同位语从句中的that的

7、区别：定语从句中的that关系代词，三大作用：连接主句与从句指代先行词在从句中作成分(主语、宾语或表语)同位语从句中的that连接词，不作成分，无意义，只起连接作用 They heard the news on the radio yesterday that a typhoon was coming.昨天他们从收音机里听到台风要来的消息。(that引导的是同位语从句，that在从句中不作成分，无意义，只起连接作用)She bought the book that she had been dreaming of.她把她一直梦想的那本书买回来了。(that引导的是定语从句，that连接主从句；

8、指代先行词the book；在从句中作宾语)2定语从句是形容词性的，其功能是对先行词进行修饰或限定，不可去掉先行词；而同位语从句是名词性的，其功能是对名词进行进一步解释说明，去掉先行词句子仍然正确。The information that they got yesterday has no use.他们昨天得到的信息没什么用处。(画线部分为定语从句，去掉先行词the information后剩下的句子不正确)We have received the information that they may have left the country.我们已经得到消息，他们可能已经离开了这个国家。(画

9、线部分为同位语从句，如果去掉the information，剩下的仍然是个正确的句子。)3同位语从句对应的名词一般为抽象名词；而定语从句的先行词没有这方面的限制。The decision when they will leave for Beijing hasnt been made.他们还没有做出决定将何时动身去北京。(when引导同位语从句，decision是抽象名词)They will always remember the days when they lived in that mountain village.他们会永远记住他们生活在那个山村的日子。(when引导定语从句，the

10、days是具体名词)课堂达标验收.语法填空 1We are faced with a problem _ we have not enough natural resources.答案：that 句意：我们面临着一个问题：我们没有足够的自然资源。that引导的从句作problem的同位语。2We have no idea at all _he has gone.答案：where 句意：我们根本不知道他去了哪里。where引导同位语从句，在从句中作地点状语。3The experts in medicine are trying to reduce peoples fear _ H7N9 is f

11、rightening.答案：that 句意：医学专家们正在努力减少人们对H7N9的恐惧。从句意义完整，且从句不缺少任何成分，故that引导同位语从句。4The students have got a message _ there will be examinations at the weekend.答案：that 句意：学生们已得到了一个消息，周末将有考试。that引导的从句作message的同位语。5The order came _ the soldiers _(leave)the small village the next morning.答案：that;(should)leavet

12、hat引导的从句作order的同位语，故从句中谓语动词应用虚拟语气，即“should动词原形”形式。6The belief _ people find it more convenient to shop online _(prove)in the research.答案：that;was proved 考查that引导的同位语从句及prove的用法。句意：在研究中，人们认为网上购物更方便的想法证明是正确的。that引导的从句作belief的同位语。7There is a strong probability _ Mr.Brown will be promoted next week.答案：t

13、hat 句意：很有可能布朗先生将在下周被提升。从句意义完整，且从句不缺少成分。probability后接同位语从句，应用that引导。8There is some doubt among people _$749 is too much for an iPhone 4.答案：whether 考查同位语从句。句意：人们心中存着疑问：749美元对于一部iPhone 4来说是否太贵了。whether引导同位语从句，意为：是否。9Finally they found out the truth _ their socalled boss had gone abroad with all their m

14、oney.答案：that 句意：最终他们发现他们所谓的老板已经带着他们所有的钱出国了。这里的从句说明truth的内容，为同位语从句，从句不缺成分，用that引导。10We expressed the hope _ they would come and visit our hometown again.答案：that 句意：我们表达了希望他们再来参观我们故乡的愿望。that引导的同位语从句作hope的同位语，句中不缺少任何成分。.单句改错 1Our team has won the game,that made us very happy.()2Ive come with a message

15、from Mr.Wang how he wont be able to see you this afternoon.()3He must answer the question if he agrees with what she said or not.()4Ive read the book where you gave me the day before yesterday.()5One of the men held the opinion when what the book said was right.()6The news what you told us is really encouraging.()7Dad made a promise which he would buy his children gifts.()8It is a question what he did it.()答案：1.thatwhich2.howthat3.ifwhether 4wherethat/which或去掉where5.whenthat 6whatthat/which或去掉what7.whichthat 8whathow