1、Section Grammar连词语 境 自 主 领 悟 先观察原句后自主感悟1.Norway is at the top of the list，while the US is at number 7.2.In the last ten years in China，150 million people moved out of poverty.However，the challenges are still great.3.Although more than 80% of children in developing countries go to primary school，abou
2、t 115 million children are not being educated.4.More than 1 billion people in developing countries do not drink safe water.However，in other regions of the world，e.g.Eastern Europe，water is now mostly safe to drink.5.The report shows that we are making some progress but that we need to make greater e
3、fforts.6.Although developed countries give some financial help，they need to give much more.1.1句中while表示对比或相反的情况，意为“然而”。2.由2、4、5句可知，but是一个并列连词，而however用作副词。3.3、6句中although引导让步状语从句，可以与though互换。语 法 精 要 点 拨连词是连接单词、短语、从句或句子的一种虚词，在句中不单独作任何成分，但大多数连接词都有具体的意义和用法。本单元主要学习表示转折关系的连词but，however，although/though，wh
4、ile等。1but和however的用法两者都意为“但是；然而”，均表示转折关系，但用法有所不同。(1)but用作并列连词，用来连接并列句子或并列成分，表示强烈对比、转折，两个并列成分之间可以用逗号隔开，也可不用，但是but后面不用逗号隔开。He is a shy man，but he is not afraid of anything or anyone.他是一个腼腆的人，但是他不害怕什么事情或任何人。名师点津but作连词还可用于“Im sorry/Excuse me，but.” 句式中表示歉意，but本身没有意义。Im sorry，but I cant help you with the
5、problem.很抱歉，我不能帮你解决这个问题。(2)however作副词时，表示“然而，可是，不过”，用以引出令人吃惊或表示对比的话语，可放在句首、句中或句末，但要用逗号隔开。Id like to go with you，however，my hands are full.我很想和你一块去，可是我太忙了。You may be right.However，I still want to do what I planned.你也许是对的，但我还想按我计划的去做。名师点津however作连词时，表示“无论如何，不管怎样”，相当于no matter how，引导让步状语从句，从句可放在主句之前或之后
6、。常构成：however/no matter howadj./adv.主语谓语。However/No matter how hard you try，it is difficult to lose weight without cutting down the amount you eat.不管你多么努力，如果不减少饭量，减肥很难。He tries his best to solve the problem，however difficult it is.他尽力解决这个问题，不管它有多困难。即时演练1用but/however填空He is young but very experienced.
7、However long it takes，Im going to get the job finished.Later，however，he changed his mind.2although 和though的用法(1)although和though都是引导让步状语从句的从属连词，意为“尽管，虽然”，一般情况下可互换。但although较正式，多用于句首，而though在非正式文体中较为普遍。Although/Though these measures are not effective forever，they are vital for now.虽然这些措施并不能永远有效，但它们目前是
8、至关重要的。名师点津although和though都不能和并列连词but连用，但可以和yet或still连用。(2)though引导让步状语从句时可用部分倒装形式，其用法相当于as，把从句中的表语、状语或动词原形置于句首；若表语是可数名词单数，前置时要省略不定冠词。Hot as/though the night air was，we slept deeply because we were so tired after the long journey.夜晚的空气虽然很热，但因为长途旅行之后很累，我们睡得很沉。Child though/as she is，she knows a lot.虽然还
9、是个孩子，她却懂得很多。Fast as/though you read，you cant finish the book in three days.尽管你读得快，你也不可能在三天内读完这本书。Try though/as I might，I couldnt lift the stone.尽管我试了，还是搬不动那块石头。名师点津though还可以作副词，放在句末，用逗号和主句分开，相当于however，意为“然而”。She said she would come；she didnt，though.她说她要来，然而却没来。即时演练2一句多译他虽然成功，但不骄傲。Although/Though he
10、 is successful，he is not proud.Successful though/as he is，he is not proud.He is successful，but he is not proud.He is successful；he is not proud，though/however3while的用法(1)while作并列连词表示转折，强调前后句的对比关系，意为“然而”，此时while不能位于句首。Waving ones hand is to say “Goodbye”Nodding the head means agreement，while shaking
11、it means disagreement.挥手表示再见，点头表示同意，而摇头表示不同意。(2)while引导让步状语从句，意为“虽然，尽管”，可以与although或though互换，此时while位于句首。While online shopping has changed our life，not all of its effects have been positive.尽管网上购物已经改变了我们的生活，但不是所有的影响都是积极的(3)while引导时间状语从句，意为“当时候”，此时while相当于during the time that.，从句中的谓语动词通常是延续性动词的进行时或状态
12、动词，不可用短暂性动词。I learnt a lot of French while I was in Paris.在巴黎时我学了很多法语。语 法 应 用 落 实.单句语法填空1Although/Though our football team failed in the match，we did our best.2Would you like to go to a movie tonight?Id like to，but Im busy preparing for the final examination. 【导学号：27932009】3Please keep still while I
13、 am taking photos for you.4We had thought the figures were correct.However，we found some errors when the plan was carried out.5We will have to finish the job，however long it takes.6Im sorry，but Mr.Eric left the office just a few minutes ago.7They knew it would be too late to do anything.They didnt w
14、ant to admit the fact，though/however8Girl though/as she is，she is much naughtier than a boy. 【导学号：27932010】.单句改错1Although the Internet is of great help，but I dont think its a good idea to spend too much time on it.butyet或去掉but2Some people waste lots of food but others havent enough to eat.butwhile3M
15、uch although he likes her，he does get angry with her sometimes.althoughas/though4Sailing in rough weather can be very unpleasant.But，we found it exciting.ButHowever5He is a shy man，so he is not afraid of anything or anyone.sobut6Im sorry，although I cant help you with the problem.althoughbut7He tried his best to solve the problem，although difficult it was.althoughhowever