1、1.but 和 however语境领悟*They rushed to the hospital but they were too late.他们火速赶往医院但还是太晚了。*Im sorry,but I cant help you with the problem.对不起，就这个问题我无能为力。*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。*He hasnt arrived.He may,however,come later.他还没有到。然而，他可以晚些时间来。知识归纳 but并列连
2、词用来连接并列分句或其他并列成分，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 不能置于句首，且后面不用逗号隔开however 副词表示“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，但要用逗号隔开深化点拨 however 还可以作从属连词，相当于 no matter how，意为“无论如何，不管怎样”，引导让步状语从句，可置于主句之前或之后，常构成“howeveradj./adv.主语谓语”。*However long it takes,Im going to get the job finished.无论这项工作用多长时间，我都
3、要完成它。2although 和 though语境领悟*Although/Though he likes the girl,(yet/still)he cant marry her.虽然他很喜欢这个女孩，但他不能与她结婚。*Try though he might,he could not find a job.尽管他可能尝试了，但他没有找到工作。*Proud though they are,they are afraid to see me.虽然他们很高傲，但害怕见我。*Child though she was,the actress drew wide audiences.虽然这个女演员很小
4、，但她人气很旺。知识归纳(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”，一般情况下可以互换使用，但 although 较正式，多用于句首，而 though 在非正式文体中较为普遍。(2)although 和 though 都不能和并列连词 but 连用，但可以和副词 yet 或 still 连用。(3)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。深化点拨(1)though 还可作副词，放在句末，用逗号和主句分开，相当于however，意为“
5、然而”。*Its hard work.I enjoy it,though.这份工作很辛苦，然而我喜欢。(2)although 和 though 引导的让步状语从句的省略现象：如果主从句的主语一致或从句的主语是 it，且从句的谓语动词是 be 的各种形式时，从句的主语或 it 和 be 可以省略。*Though(he is)busy,he tries to keep up with his old friends far away.虽然他很忙，但他仍然设法与远方的老朋友保持着联系。Although/Though(it was)cold,the old man still wore a vest.
6、虽然天很冷，老人还是穿着一件背心。3while语境领悟*Im interested in traveling while my brother is fond of staying at home.我喜欢旅游，而我弟弟则喜欢待在家中。*I do every single bit of housework while my husband Bob just does the dishes now and then.我什么家务活都做，而我丈夫鲍勃只是偶尔洗洗碗。知识归纳 while 作并列连词表转折，强调前后句的对比关系，意为“然而”，此时 while 不能位于句首。深化点拨 while 还可以作
7、从属连词，引导各种状语从句(1)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 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 tim
8、e on it.虽然网络很有帮助，但我认为在网上花太多时间不是个好主意。(2)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。(3)while 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。考情分析
9、表示转折关系的连词 but,while 等是考查的重点，常出现在语法填空和短文改错等题型中。同时，书面表达中也常用这些词语精确地表达文意，增加句子的多样性，提高文章档次。即学即练 1单句填空1Food is forbidden in the library,_ you are allowed to have drinks and sweets with you.2It is said that Chinese people are living for others,_ the Americans are for themselves.3_ the doctor has warned him
10、of the side effects of the medicine,he still takes it every day.4He was feeling bad,he went to work,_,_and tried to concentrate.butwhileAlthough/While/Thoughhowever5_ scientists have learned a lot about the universe,there is much we still dont know.6Papa insisted that we learn at least one new thing
11、 every day._,_as children,we thought this was crazy.7Many questions came up at the meeting,_ he answered none.8_ he received an invitation to work as chairman of the company,he refused to accept it.9I like watching TV,_ she likes reading.10He stays at home every day without a job,_ he gets good inco
12、me.Although/While/ThoughHoweverbutAlthough/While/Thoughwhilebut即学即练 2句型转换1She knew all her friends would be there,but she didnt want to go.She knew all her friends would be there,she didnt want to go,_.2Some are for the plan;on the other hand,others are against it.Some are for the plan _ others are
13、against it.3Though she likes dancing,her parents dont allow her to learn it.She likes dancing,_,_her parents dont allow her to learn it.though/howeverwhilehowever.用适当的连词填空1_ scientists have learned a lot about the universe,there is much we still dont know.2He is a shy man,_ he is not afraid of anyth
14、ing or anyone.3_ the students came from different countries,they got along quite well in the summer camp.4_ the job takes a great amount of time,most students agree that the experience is worth it.5The idea for the new plan came to his mind,_ he was devoted to his experiment in the lab.AlthoughbutWh
15、ile/AlthoughAlthoughwhile6He said that it was so,_ he was mistaken.7_ difficult life is,we must believe in ourselves and believe that we can do something well.8What the scientist said sounded strange,_,_they made sense.9Im sorry,_ I wont be able to come tonight.10_ I know shes not perfect,I do like
16、her.butHoweverhoweverbutWhile.完成句子1课本和词典可以被用作参考书，而杂志可以作为阅读材料。The textbooks and dictionaries can be used as reference books _ serve as reading materials.2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。Most of my classmates wanted to go to a park _of going to a nicer place.3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。However,I think
17、 that you will quickly adjust to them _.while the magazineswhile I had an ideaalthough the weather and the food are different from yours4虽然一些问题看起来我不熟悉，但是他们很容易回答。_ seem unfamiliar to me,they are easy to answer.5不管有多远，我今晚也要开车到那儿去。_,I intend to drive there tonight.6我的房间很小，却很舒服。My room is small;_.7当我们正在
18、吵架时班主任进来了。_ our head teacher came in.8我喜欢唱歌，而妹妹喜欢跳舞。I like singing _.Though some of the questionsHowever far it ishowever，its comfortableWhile we were arguing/quarrellingwhile my sister likes dancing.语法填空阅读下面材料，在空白处填入适当的内容(1 个单词)或括号内单词的正确形式。People 1._(live)in different countries made different kinds
19、 of words.Today there are about fifteen hundred 2._(language)in the world.Each contains many thousands of words.A very large dictionary,3._ example,contains four to five hundred thousand words.4._ we do not need all these.To read short stories you need to know only about two thousand words.Before yo
20、u leave school,you will learn only one thousand or more.livinglanguagesfor ButThe words you know are 5._(call)your vocabulary.You should try to make your vocabulary 6._(big).Read as many books as we can.There are a lot 7._ books 8._(write)in easy English.You will enjoy them.When you meet 9._ new word,look it up in your dictionary.Your dictionary is the 10._(much)useful book.calledbigger of written amost