lesson_Lesson 100 教学设计方案

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Teaching Aims

Teaching procedures

Step 1 Revision

l .Check the homework exercises.

2. Revise the contents of the story in Lessons 98 and 99.

Step 2 Listening

Listening Cassette Unit 25. Play the tape for Ex. 1 two or three times as necessary. Then do Exx. 2 and 3. Pause the tape at important moments and help the Ss to find the answers when they need help.

Step 3 Practice

Listening Unit 25, Ex. 4. The Ss tell the story to their partners.

Step 4  Presentation

Write this on the Bb:

CERTAIN POSSIBLE       IMPOSSIBLE

1 He must might / may / could can"t be American.

2 They might not / may not be very happy.

For sentence 1, if possible, show some pictures of men to the Ss and ask them to guess whether they are American or not, using these phrases. Point out the categories: Certain and Impossible. Tell the Ss that when we are sure about something we can use must be or can"t be. Point out that it is a mistake to say mustn"t when we are talking about something which we think is impossible. Tell the Ss that might, may and could are used when we are not very sure about our guess.

For sentence 2, tell the Ss that we say might not/may not when we are not very sure about our guess, but that could not is incorrect.

Step 5 Practice

SB Lesson 100, Part 2. Go through the instructions and do Number I orally with the class. Then get the Ss to complete this exercise individually. Go over the answers with the class.

Suggested answers:

1. He must be in his office.

2 .He may / might / could be at the conference.

3 .They must have / earn a lot of money.

4 .They must be foreign.

5 .He must walk too fast.

6 .They may / might not be at the station.

7 .He can"t be terribly busy.

8 .She may / might / could be in the organizer"s office.

9 .It may / might / could be an interesting talk.

10. You may / might not be interested in the conference.

Step 6 Test

Give the Ss this test which practise modal verbs. Write sentences about these situations, using must / might / may / could / can"t.

1. Perhaps the theatre will be full.

2. I"m sure that necklace is valuable.

3. I"m sure the medicine isn"t in the cupboard.

4. Perhaps my neighbours are away.

5. Perhaps we will have a good trip.

6. I"m sure it isn"t made of gold.

7. Perhaps his girlfriend isn"t in the hotel.

8. I"m sure that restaurant is a good one.

9. Perhaps the train ticket is as expensive as the air ticket.

10. Perhaps there will be all sorts of different nationalities there.

Answers:

1. The theatre might / may / could be full.

2. That necklace must be valuable.

3. The medicine can"t be in the cupboard.

4. My neighbours might / may / could be away.

5. We might / may / (could) have a good trip.

6. It can"t be made of gold.

7. His girlfriend may / might not be in the hotel.

8. That restaurant must be a good one.

9. The train ticket might / may / could be as expensive as the air ticket.

10. There might / may / could be all sorts of different nationalities there.

Step 7 Writing

SB Lesson 100, Part 3. Give the Ss some time to write the summary. Let them look at each other"s writing in groups, then revise their drafts and finalize their compositions.

Step 8 Workbook

Wb Lesson 100, Exx. 1 - 3.

Exx. 1 and 2 should be done orally in class. For Ex. 2, your help is needed. For example, you have to tell the Ss in what kind of situation “Come on!” is used. Say He Xiaofeng sings English songs beautifully. Would you please sing us a song, Xiaofeng? Seeing she is hesitating, you may say Come on! Don "t feel shy. Similar explanations have to be made with some of the other sentences.

If possible, ask your Ss to do Ex. 3. You may make up one with a good student. Then let the Ss work in pairs. Call out several pairs to give their performance.

Step 9Homework

Finish off the Workbook exercises.

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