1、Section_ Grammar_连 词语法图解探究发现Norway is at the top of the list, while the US is at number 7.Although developed countries give some financial help, they need to give much more.In the last ten years in China, 150 million people moved out of poverty. However, the challenges are still great.The report sho
2、ws that we are making some progress but that we need to make greater efforts.You can do it however you like.While he is in poor health, he works hard.Young as/though he is, he knows a lot.我的发现(1)由句可知，but 是一个连词，而 however 既可以用作副词，也可以用作连词。(2)句 although 引导让步状语从句，可以与 though 互换。(3)句中 while 引导让步状语从句，意为“虽然；
3、尽管” ，而句中 while 表示对比或相反的情况，意为“然而”。(4)句中 as/though 引导让步状语从句，且句子采用了倒装语序，即将从句中的表语、状语或动词原形提至句首。一、but 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。1but 用作并列连词，常用来连接两个并列的句子或一个句子中的两个并列成分，表示强烈的对比、转折，两个并列成分之间可以用逗号隔开，也可以不用，但是 but 不能置于句首，并且后面不用逗号隔开。They rushed to the station but the train had left.他们匆忙赶到车站，但是火车已经开
4、走了。It is cold in winter here, but it is not hot in summer.这里冬天很冷，但是夏天不热。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 problem. 很抱歉，我不能帮你解决这个问题。2however 用作副词时，意为“然而；但是”，用以引出令人吃惊或表示对比的话语，可以放在句首、句中或句末，但通常有逗号与主句隔开。You may be right. However, I still
5、 want to do what I planned.你可能是正确的。但是，我仍然想做我计划好的事情。Your answer is wrong, however.不过你的答案是错的。He hasnt arrived. He may, however, come later.他还未到，不过，他可能晚一会儿来。名师点津 however 还可以用作连接副词，意为“无论如何，不管怎样”，后面常接形容词或副词，引导让步状语从句，该从句可放在主句之前或之后。You should try to get a good nights sleep, however much work you have to do
6、. 不管你有多少工作要做，你都应该好好休息一个晚上。He tried his best to solve the problem, however difficult it was. 他尽力解决这个问题，不管它有多困难。即时演练 1(1)选词填空：but, howeverHe is young but very experienced. However long it takes, Im going to get the job finished. Later, however,_he changed his mind. He has three daughters but no sons.
7、You should always try to achieve more, however well you have done before.(2)完成句子He likes sports, but_his_wife_likes_music. 他喜欢运动，而他妻子则喜欢音乐。However_cold _it_is,_he always goes swimming. 不管天有多冷，他都去游泳。二、although 和 though 的用法1although 和 though 都是引导让步状语从句的从属连词，意为“尽管，虽然”，一般情况下可以互换。但 although 较正式，多用于句首，而 t
8、hough 在非正式文体中较为普遍。although 和 though 都不能和并列连词 but 连用，但可以和 yet 或 still 连用。Although he likes the girl, (yet/still) he cant marry her.虽然他喜欢这个女孩，但不能和她结婚。2though 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。Poor though/as he is, he lives a happy life.他虽然穷，但过得很幸福。Child though/as sh
9、e is, she knows a lot.虽然还是个孩子，她却懂得很多。Much though/as he loved her, he didnt tell her.尽管他很爱她，但并没有告诉她。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，然而她没来。即时演练 2 (1)一句多译他虽然成功，但不骄傲。Altho
10、ugh/Though he 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/however. (2)完成句子I dont really like the author, although_I_have_to_admit his books are very exciting. 尽管我不得不承认他的书很振奋人心，但我并不是真的喜欢这位
11、作家。Expert_though/as_he _was,_he failed. 他虽是专家，但还是失败了。三、while 的用法while 作连词时用法较多，主要有以下几种含义。1while 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 it means disagreement. 挥手表示再见，点头表示同意，而摇头表示不同意。2while 引导让步状语从句，意为“虽然，尽管”，可以与
12、 although 或 though 互换，此时 while 位于句首。While there are many different interpretations of our body language, some gestures seem to be universal.尽管我们对肢体语言有许多不同的理解，但有一些手势似乎应是通用的。While the Internet is of great help, I dont think its a good idea to spend too much time on it.虽然互联网很有帮助，但我认为在网上花太多时间不是个好主意。3whi
13、le 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动词，不可用非延续性动词。I learnt a lot of French while I was in Paris. 在巴黎时我学了很多法语。4while 引导条件状语从句，意为“只要”，相当于 as long as，可放在句首或句中。While (As long as) there is life, there is hope. 留得青山在，不怕没柴烧。即时演练 3 (1)写出下列句中 while 的含义Mary listened t
14、o the radio while she had her supper. 当 的时候 While I understand your opinion, I dont agree with you. 虽然 You like Maths, while I prefer English. 然而_(2)完成句子(2016浙江高考改编)Although/Though/While_online_shopping_has_changed_our_life,_not all of its effect have been positive.尽管网上购物改变了我们的生活，但并不是它的所有的影响都是正面的。Wh
15、ile_Li_Ming_was_watching_TV,_he fell asleep. 李明看着电视睡着了。He went out for a walk while_I_stayed_at_home.他去散步了，而我却待在家里。While_you_dont_lose_heart,_you can pass the coming examination. 只要你不灰心，你就能通过即将到来的考试。.用适当的连词填空1(2017北京高考改编)Although/Though/ While birds use their feathers for flight, some of their feath
16、ers are for other purposes.2(2015北京高考改编)He is a shy man, but he is not afraid of anything or anyone. 3(2015福建高考改编)While/Although/Though the students came from different countries, they got along quite well in the summer camp. 4(2015湖南高考改编)Although/Though/ While the job takes a significant amount of
17、time, most students agree that the experience is worth it.5The idea for the new plan came to his mind, while he was devoted to his experiment in the lab. 6He said that it was so, but he was mistaken. 7However difficult life is, we must believe in ourselves and believe that we can do something well.8
18、What the scientist said sounded strange, however,_they made sense. 9Im sorry, but I wont be able to come tonight. 10While I know shes not perfect, I do like her. .完成句子1(2015天津高考书面表达)The textbooks and dictionaries can be used as reference books while_the_magazines serve as reading materials.课本和词典可以被用
19、作参考书，而杂志作为阅读材料。2(2015浙江高考书面表达)Most of my classmates wanted to go to a park while_I_had_an_idea of going to a nicer place.我的大多数同学想去一个公园，这时我有了一个去更好的地方的主意。3However, I think that you will quickly adjust to them although_the_weather_and_the_food_are_different_from_yours. 然而，我认为你会很快适应他们，尽管天气和食物与你的不同。4Thou
20、gh_some_of _the_questions seem unfamiliar to me, they are easy to answer. 虽然一些问题看起来我不熟悉，但是它们很容易回答。5However_far_it_is,_I intend to drive there tonight. 不管有多远，我今晚也要开车到那儿去。6. My room is small; however,_its_comfortable. 我的房间很小，却很舒服。7She was tired, but_she_still_went_on_working.她很累了，但她仍然继续工作。8I like sing
21、ing while_my_sister _likes_dancing. 我喜欢唱歌，而妹妹喜欢跳舞。.短文改错(2017全国卷)When I look at this picture of myself, I realize of how fast time flies.I had grown not only physically, and also mentally in the past few years.About one month after this photo was took, I entered my second year of high school and beco
22、me a new member of the school music club.Around me in picture are the things they were very important in my life at that time: car magazines and musical instruments.I enjoyed studying difference kinds of cars and planes, playing pop music, and collecting the late music albums.This picture often brings back to me many happy memories of your high school days.答案：第一句：去掉第二个 of第二句：hadhave; andbut第三句：tooktaken; becomebecame第四句：picture 前加 this/the; theythat/ which第五句：difference different; latelatest第六句：yourmy