Unit25 At the conference

一、教学目标与要求

通过本单元教学，进一步学习情态动词的用法。学生能初步掌握情态动词表判断推测的用法。要求学生能用自己的语言复述课文。正确完成练习册编排的练习。

二、教学重点与难点

1．重点词汇 organize；repeat；attend；suppose；earn；send out；get through；ringback；make up；out of breath

2．重要句型 1）What a lot of information to send out！ 2）Would you mind giving a talktoday about DNA？ 3）You must be joking！ 4）You can’t be serious！

3．语法学习must，may，might，can’t，could等情态动词的用法。

4．日常交际用语打电话（Making telephones）：1）Can you ring up…？I can’t getthrough．2）The line’s busy．I’ll try again later．3）Could I speak to…，please？4）Holdon please．5）Can I take a message？6）This is…speaking．7）Can you ask…to ring meback，please？

三、课型

（一）对话课

Ⅰ．教具  录音机，投影仪，电话机。

Ⅱ．课堂教学设计

1．教师通过以下步骤导入本课：

向学生提出下列问题：1）Suppose you will organize a meeting and you want to ask somepeople to come and make speeches．What do you have to do？（send out lots of invitations）2）And what other things do you have to do if you want your meeting to be a successful one？（rent meeting halls；book hotels；order meals；arrange buses；make time-tables；selectspeakers；print materials；plan outdoor activities，etc．）

由学生充分讨论，得出他们自己的意见。括号里的内容供教师参考。

2．准备放对话录音。借助投影片打出以下听前提问：1）How many guests are they goingto invite？2）How many buses do they need？

放录音一至两遍，请学生回答上述问题，教师予以必要订正。

Key：1）They are going to invite over two hundred guests．2）They need two buses tomeet the people at the station．

3．再次放对话录音，学生跟读。将学生分为两人一组练习对话。数分钟后，请两、三组同学到前面表演。

教师指导学生归纳本课中出现的有关打电话时的常用语句（见日常交际用语部分）。也可为学生设计一些情景，由同学编写对话。

情景1：You want to visit the History Museum and you make a phone call，asking aboutthe price of tickets；any cheaper tickets for students；the time the museum is open to public；whether it closes at weekends；what are on show and other things you want to know．

情景2：You are supposed to organize a class-meeting next Monday．You make a phonecall to your teacher，telling him／her your plan and ask for your teacher’s opinions．

经数分钟练习后，教师请几位同学借助电话机到前面进行表演，教师予以讲评。提醒学生在打电话时不可对视。也可鼓励学生自己设计其他情节编写对话。

4．要求学生将该课对话以玛丽的口吻改写为一篇短文。教师可给予必要的提示。

提示语：1）be busy organizing a conference；2）send out lots of invitations；3）make aphone call to bus company；4）can’t see clearly a name；5）Lizzy helps me．

给出首句：We are very busy now because we are organizing a large medical conference．

要求学生根据对话，参照老师所给提示及首句，编写短文。

Model：

We are very busy now because we are organizing a large medical conference．We haveover two hundred invitations to send out，Lizzy asks me to ring up the bus company，for weneed two buses to meet the people at the station．I have tried，but I can not get through．The line is busy．And I can’t see clearly a name of the guest and ask Lizzy to help me．She issure the letter must be a“D”．

当堂要求学生完成，如时间允许，可请几位同学朗读自己的短文，教师予以讲评。

5．布置作业1）预习第98、99课；2）完成练习册中安排的练习。

（二）阅读理解课（Ⅰ）

Ⅰ．教具录音机，投影仪。

Ⅱ．课堂教学设计

1．检查生词及短语。

2．教师通过以下提问导入正课：Suppose there is a medical conference．What do youthink people will talk about at such a conference？

板书学生提及的和医学有关的话题，并借此复习有关词语。以下供教师参考：

（cancer；smoking and health；heart trouble；high blood pressure；food and health；sports and health；the problem of losing weight；how to protect eyes；effect of pollution onhealth；etc．）

3．教师给出读前提问：1）Why did Dr．Baker think that the invitation was funny？2）Whycouldn’t the main speaker give the talk？

教师给学生数分钟，要求学生快速阅读课文。之后请同学回答上述问题。

Key：1）Because usually Dr．Baker was not invited to such a medical conference．2）Themain speaker could not give her talk because her plane was very late as a result of bad weath-er at the airport．

4．放课文录音，学生跟读一至两遍。教师就课文内容提问，检查学生的理解程度，并对某些问题进行讨论：1）Where was the medical conference held？2）Why did Dr．Baker lookat his diary after he got the invitation？3）What was his decision and what did he do then？4）Why do you think one or two people were surprised to see him？5）What happened on themorning of the second day of the conference？6）Do you think the organizer know Dr．Baker？How do you know？7）What did the organizer want Dr．Baker to do？8）Can you imagine howthe organizer would feel after Dr．Baker said，“You must be joking！I know nothing at allabout that subject”？

Key：（仅供参考）1）The medical conference was held in London．2）Because he wantedto see whether he would be free that week．3）He decided to attend the conference and repliedto the invitation，accepting it．4）Because they had never thought Dr．Baker would come tosuch a conference．5）The main speaker couldn’t arrive to give the talk because of bad weath-er at the airport．6）No，he didn’t．He politely asked Dr．Baker to step out to make himselfknown to the organizer．7）He wanted Dr．Baker to give a talk about DNA．8）He must beequally surprised at Dr．Baker because he could not understand a mistake had been made．

5．要求学生将本课中关于贝克博士在接到邀请信后感到有些奇怪的相关描写列出。

6．以会议组织者的口吻，描述会议第二天的情况（上）。教师给予提示：

英文提示（用投影片打出）：1）the first day，OK；2）the main speaker would not be ableto arrive the second day；3）everybody was worried；4）invite Dr．Baker to give a talk；5）know nothing about DNA

将首句给出：The medical conference went on smoothly the first day．But on the morn-ing…

Model：

The medical conference went on smoothly the first day．But on the morning of the sec-ond day，we were told that the main speaker，Dr．Lively would not be able to arrive that daybecause of bad weather at the airport．It was already lecture time and everybody was wor-ried．Then we decided to invite Dr．Baker to give a talk on DNA instead．I knew Dr．Bakerwas in the hall．But when I told him this，he said he knew nothing about DNA and he wasnot Peter Baker but David Baker．Strange！

学生先在小组内交流并相互启发、补充，然后请学生在班上交流。

7．布置作业1）复述本课课文；2）完成练习册中所安排的练习。

阅读理解课（Ⅱ）

Ⅰ．教具录音机，投影仪。

Ⅱ．课堂教学设计

1．通过提问温习第一部分课文内容：1）What did Dr．Baker receive one day？2）Why didhe think that it was funny to send him this invitation？3）Did he go there at last？4）Whathappened on the morning of the second day？5）What did the organizer want Dr．Baker to do？6）What did Dr．Baker say to the organizer？

2．检查第一部分课文复述。

3．准备阅读At the conference（Ⅱ）教师给出读前提问：1）Where did they discover themistake？2）Where did Dr．Baker work and what was his special field？

教师给学生数分钟，要求学生快速阅读课文。之后请同学回答上述问题。

Key：1）They discovered the mistake at the organizer’s office．2）Dr．Baker worked atLincoln’s College in Tennessee and he was an expert on illnesses of the ear，nose and throat．

4．放课文录音，学生跟读一至两遍。教师用投影仪打出以下statements，要求学生判断其正误。并对错误的statements进行修改：1）The mistake was made by the organizer．2）Dr．Baker was working in England．3）Both Dr．Baker and Dr．Lively were experts on ENT．4）Dr．Baker gave a very good talk the next day．5）Dr．Baker was likely to come to the sameconference the next year．

Key：1）False（The mistake was made by someone else when the invitation list was be-ing done．）2）False（Dr．Baker was working in Tennessee，USA．）3）True 4）False（Dr．Baker gave a very good talk later that day．）5）True

5．以会议组织者的口吻，描述会议第二天的情况（下）。教师给予提示：

英文提示（用投影片打出）：1）discover the mistake；2）how the mistake was made；3）Dr．Baker，an expert on ENT；4）ask him for help；5）give a wonderful talk

将首句给出：Then we went to our office and discovered the mistake．Though I hadput…

Model：

Then we went to our office and discovered the mistake．Though I had put Dr．P．Baker’s name on the list of speakers，someone made a mistake and had written“Dr．D．Bak-er”instead when the invitation list was being done．However，he told me that he was an ex-pert on ENT，and Dr．Lively，the main speaker，was going to talk on that very subject thatday．When I asked him to help，he agreed．He gave a wonderful talk later that day and Iwished him to come again the next year．

学生先在小组内交流并相互启发、补充，然后请学生在班上交流。

6．布置作业1）复述整篇课文；2）完成练习册中所安排的练习。

（三）语言训练课

Ⅰ．教具投影仪。

Ⅱ．课堂教学设计

1．教师检查课文复述。

2．教师从本单元词语中选择部分常见词语，配以例句介绍给学生。要求学生反复练习这些例句，并请同学造句，教师予以讲评订正。

词语：organize；send out；ring back；repeat；attend；attention；unable；serious；intro-duction；get through

例句：1）The meeting was badly organized．2）The professor organized his thoughts be-fore giving his lecture．3）The sun sends out light and heat．4）Will you send the children outto play？They are making too much noise here．5）He is not in．Why don’t you ring back af-ter 6 o’clock．6）Please repeat the following words after me．7）He decided to attend themeeting that day．8）He is very quiet and doesn’t draw much attention to himself．9）I am un-able to go with you．10）Are you serious？11）The introduction in a book tells us what thebook is about．12）The operator finally got me through．13）When you get through with yourwork，let’s go out．

3．根据第98、99两课所提供的情节，描述贝克博士在这次医疗大会上的经历。

Ask the students to say something about Dr．Baker’s experiences at the medical confer-ence based on the text．The teacher may give students some hints to help them to do the sto-ry-telling．

The hints：1）How did Dr．Baker feel when he got the invitation？2）Did he attend theconference or not？3）Why was he asked to give a talk instead and what happened to the mainspeaker？4）Was he an expert on DNA or was he an expert on ENT？5）Had the organizer in-tended to invite Dr．D．Baker at first？And why was there a mistake？6）Did Dr．Baker givea talk at the conference or not？How was his talk received？

Model：

Dr．Baker was very much surprised to receive an invitation to the…Medical Confer-ence in London．However，he decided to attend the meeting himself．On the morning of thesecond day of the conference，the main speaker failed to arrive because of the bad weather atthe airport．So he was asked to give a talk instead．When the organizer asked him to give atalk on DNA，Dr．Baker told him that he was an expert on ENT．Later the organizer discov-ered the mistake．Though the organizer had put Dr．P Baker’s name on the list of speakers，someone had made a careless mistake and had written“Dr．D Baker”instead when the invi-tation list was being done．Anyhow Dr．Baker did give a talk that day and everyone at theconference was very interested in it．

4．书面表达练习

中文提示（用投影片打出）：1）班里一位新同学很少讲话；2）班主任要他主持下周一班会；3）题目，临近期末，谈下学期打算；4）给班主任打电话，不想主持；5）其母又来电说想转学

英文提示（用投影片打出）：1）speak to；2）organize；3）ring up；4）be unable to；5）attend；6）repeat；7）ring back

将前两句给出：A new student has come to our class．He is always silent and seldomspeaks to others．

七、八分钟后，请几位同学朗读自己的短文，教师予以讲评。

Model：

A new student has come to our class．He is always silent and seldom speaks to others．Our teacher，Miss Zhao，asked him to organize a class-meeting the following Monday after-noon，for everyone in our class takes turns to do so．Since it’s now nearly the end of theterm，the topic of the class-meeting should be a plan for the new school year．Yesterdayevening，he rang up Miss Zhao and said that he was unable to attend the class-meeting．When Miss Zhao asked him why，he simply repeated that he couldn’t come to the meetingand then hung up．Later his mother rang back，saying that her son would go to anotherschool the next school year．So he just didn’t want to say anything about his plan for the fu-ture．

5．布置作业1）预习第26单元；2）完成练习册中安排的练习。

四、难句分析

1．Lizzy：Yes，there must be over two hundred bere．是的，这儿想必有200多份。

Lizzy：It must be a“D”．想必是字母“D”。must作“想必、准是，一定”解，用来表示对某事确有把握的推论或揣测。虽然句中的must也可用may代替，但must语气更肯定。例如：

The farmers must be very tired；they’ve kept sowing all the morning．农夫们想必很累了，他们整个上午一直在播种。

I always meet him in the street．He must live quite near here．我总在这条街上碰到他，想必他就住在附近。

must表示推测常用在肯定句中。在疑问句中用can，否定句中用can’t。例如：

What do you think this invitation can mean？你认为这份请柬可能意味着什么？

She can’t be a professor—she’s so young．她不可能是教授—她还很年轻。

在否定句中，也有用can’t表示推测的，意思是“想必不，准是不”。例如：

I can hear the Brown’s phone bell ringing but no one is answering it；They can’t be athome．我听到布朗家的电话铃在响，但是没有人接，他们想必都不在家。

2．Dr Baker replied to the invitation，accepting it．贝克博士还是答复了请柬，接受了邀请。

1）reply可作动词，也可作名词。作不及物动词时，意思是“回答”，可用reply to（sb．／sth．）表示“对……作出的回答”；作及物动词时，是“答到、回答说”的意思，后跟直接引语或宾语从句，不直接跟人或物作宾语。作名词时，是“回答、答复”之意，后面可跟介词to的短语。例如：

She cried，but didn’t reply．她哭了，但不回答。

Please reply to my question．请回答我的问题。

He replied that he didn’t know the secret．他回答说他不知道这个秘密。

She didn’t lift her head，and made no reply．她头也不抬，又不回答。

reply和answer都有“回答”的意思，有时可以通用，但reply比answer正式，指经过思考的答复。二者都可以作及物动词，answer可直接跟名词作宾语。例如：Can you answer myquestion？Can you reply to my question？你能回答我的问题吗？2）accepting it是-ing短语，表示伴随动作，相当于and accepted it。例如：

The boss went to see Mr．King，praising him for his excellent work．老板去看望了金先生，表扬了他出色的工作。

注意：accept和receive的区别：

accept和receive都有“收到”的意思。但receive只表示客观上“收到某物”，与主观愿望无关，而accept表示主观上“乐意接受某物”。例如：

He received the gift，but he did not accept it．他收到了礼物，但他没接受。

I have received an invitation from John．Shall I accept it or refuse it？我收到了约翰的请柬，我是接受还是拒绝？

3．Would you mind giving a talk today about DNA？能不能请你今天作一个关于DNA的报告？

“Would you mind+doing sth．？”是日常交际用语，表示礼貌地提出请求。例如：

Would you mind sending him a message for me？请你帮我带个口信给他好吗？

Would you mind fetching me some water，please？劳驾给我打点水好吗？

4．Dr Lively was going to talk on that very subject today．莱芙利博士今天原先要谈的正好是这个题目。

介词on在句中作“关于”（about）解。例如：

I want to speak to you on a very serious subject．我想跟你谈一个非常严肃的问题。

I can’t agree with you on this point．关于这一点，我不能同意你的意见。

句中的very是形容词，修饰后面的名词subject，用来加强语气，作“正好”解。例如：

That’s the very thing I need．那正是我需要的东西。

She determined to go that very afternoon．她决定就在当天下午走。

选择朋友要经过周密考察，要经过命运的考验，不论是对其意志力还是理解力都应事先检验，看其是否值得信赖。此乃人生成败之关键，但世人对此很少费心。虽然多管闲事也能带来友谊，但大多数友谊则纯靠机遇。人们根据你的朋友判断你的为人：智者永远不与愚者为伍。乐与某人为伍，并不表示他是知已。有时我们对一个人的才华没有信心，但仍能高度评价他的幽默感。有的友谊不够纯洁，但能带来快乐；有些友谊真挚，其内涵丰富，并能孕育成功。一位朋友的见识比多人的祝福可贵得多。所以朋友要精心挑选，而不是随意结交。聪明的朋友则会驱散忧愁，而愚蠢的朋友会聚集忧患。此外，若想让友谊地久天长。这需要技巧和判断力。有的朋友需近处，有的则需远交。不善言谈的朋友可能擅长写信。距离能净化近在身边无法容忍的缺陷。交友不宜只图快乐，也要讲求实用。一位朋友等于一切。世间任一美好事物的三大特点，友谊兼而有之：真、善、专一。良友难遇，如不挑选则更难求。保住老朋友，比结交新朋友更重要。交友当寻可长久之友，如得其人，今日之新交，他年自成老友。最好的朋友是那些历久常新，能与之共享生活体验者。没有朋友的人生是一片荒原。友谊使欢乐加倍，痛苦减半；它是应对厄运的不二良方，是可以滋润心田的美酒。

At the conference全面版