Unit 25 At the conference

分析

　　needn’t表示“不必”；mustn’t常用来表示禁止，不允许；may表示一种可能性；can’t 则用来表示否定意义的推测，意为“不可能”，它是一种非常有把握的推测。正确答案为B项。

　　Sorry I’m late. I_______ have turned off the alarm clock and gone back to sleep again.

　　A. might     B. should     C. can     D. will

分析

　　说话者在找自己迟到的原因，并对过去的原因进行推测。can不用于表示肯定的推测。should have done表示“本应该做某事，但未做”，不合句意。所以答案为A项。

练习：

　　1. —The light is still on. Mrs Li ______ be in the office.

　　—She ______ be there because I saw her go home just now.

　　A. must, may  B. may, mustn't   C. must, can't   D. can, may not

　　2. At present too many trees ______ still ______ cut down.

　　A. is, being   B. are, to be    C. are, being   D. is. be

　　3. There must be ______ for his being late.

　　A. some reasons   B. some excuse  C. some reason  D. some results

　　4. The baby is sleeping. You ______ make any noise.

　　A. can't　　B. needn't　　C. mustn't　　D. don't have to

答案：1. C  2. C  3. C  4. C

Lesson 97 教学设计方案

Teaching Aims

　　1. Get to know how to make a telephone call.

　　2. Study the language points concerned with the dialogue.

　　3.Learn the dialogue by listening and act it out.

Teaching procedures

Step 1 Listening

Listen to the tape and then ask them some questions:

　　1. What do Mary and Lizzy have to do?

　　2. How many people are coming to the conference?

　　3. Why do they need the buses? Let's go on listening to the second part of the dialogue and see what happens when Mary rings the Bus Company.

　　4. Is Pat in the office?

　　5. What does Mary want Pat to do?

　　6. What’s Mary’s number?

Step2 Language study

　　Go through the dialogue briefly. Deal with the language points.

　　send out, get through, rig back , make up

Step 3 Performance

　　Make up the dialogue and then act it out in pairs. For example:

1.A: Can you ring up ….?

　B: Hold on , please.

　A:I can’t get through. The line’s busy.

　A: I’ll try again later.

　　　……….

2.A：Could I speak to …., please?

　B: Sorry, She’s out.

　A: Can I take a message ?

　B: Yes.

　A: Can you ask…to ring me back, please?

　…….

Step 4 Practise

　　Situation 1:You want to visit the History Museum and you make a phone call, asking about the 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.

　　Situation2: You are supposed to organize a class-meeting next Monday. You make a phone call to your teacher, telling him/her your plan and ask for your teacher’s opinions.

Step 5 Exercises

　　Do the exercises in workbook L. 97.

Step 6 Homework

　　Finish the Workbook exercises.

　　Practise the dialogues in this lesson with a classmate.