初中英语外研版 (新标准)九年级下册Unit 3 Language in use.教课ppt课件

设计说明

本单元是复习单元，首先从Language practice入手带领学生复习部分情态动词的用法，并通过对应的练习检测学生对本模块知识和语法的掌握情况；再结合课本上的听力和阅读练习巩固所学知识，同时教育学生遵守规则；通过阅读有关生态旅游的文章，让学生知道哪些事情该做，哪些事情不该做，教育学生要爱护自然，保护环境。最后，让学生完成模块任务，讨论并给要来中国的游客写出建议，让学生达到学以致用的目标。

教学目标

通过本单元的教学，让学生达成以下目标:

1.知识目标

(1) 复习本模块新单词、短语及句型；

(2) 复习情态动词的用法。

2. 能力目标

(1) 能够运用本模块所学知识完成此单元的习题；

(2) 能够给来中国的游客提出旅行建议。

3. 情感目标

通过谈论旅行规则和建议，让学生知道哪些该做，哪些不该做，教育学生爱护自然，保护环境，做一个遵纪守法的人。

重点难点

重点：本模块的重点短语和句子

难点：情态动词的用法

教学准备

PPT课件；活动6、7的录音

授课时数

1课时

教学过程

Step 1 Language practice

1. Read the sentences in the box to the class.

2. Get the students to read the sentences and pay attention to the red body parts.

3. Encourage the students to read the sentences aloud.

Step 2  Grammar

情态动词

情态动词本身有一定的词义, 表示说话人的情绪、态度或语气, 但它们不能单独作谓语, 只能和行为动词原形一起构成谓语, 表示完整的意思。

本模块我们主要复习以下情态动词:

1. can　否定形式can’t或cannot

(1) 表示能力, 意为“能, 会”。

I can play table tennis. 我会打乒乓球。

(2) 表示请求、允许，意为“可以”。

Can you pass me that book? 你能把那本书递给我吗？

You can use my bike. 你可以用我的自行车。

(3) 表示推测或可能性，多用于否定句或疑问句中。

Where can he be? 他可能在哪儿呢？

[注意]

can’t可用来表示否定的推测，意为“不可能”，语气很强烈。

Daming can’t be in the classroom. I saw him playing football on the playground just now. 大明不可能在教室里，我刚刚看见他正在操场上踢足球了。

2. could

(1) can的过去式，意为“能，会”，表示过去的能力。

He could draw when he was young. 他小的时候，他就会画画。

(2) could用在疑问句中，表示更加委婉的请求。

—Could I use your dictionary? 我可以用一下你的词典吗？

—Yes, you can. / Sorry, you can’t. I left it at home this morning.

好的，可以。/ 对不起，不行，今天早上我把它忘在家里了。

3. must

(1) 表示“必须”。

I must go now. 我现在必须得走了。

You must finish it on time. 你必须按时完成。

(2) 表示肯定的推测，意为“一定”,  语气很强烈,  用于肯定句中。否定句中则要用can’t。

—There’s someone knocking at the door. 有人在敲门。

—It must be Jim. 一定是吉姆。

(3) mustn’t意为“不要”, 表示禁止或不允许。

You mustn’t sit on the stairs. 你不要坐在楼梯上。

(4) 以must开头的一般疑问句,肯定回答用must, 否定回答要用needn’t或don’t have to, 表示“不必”，而不用mustn’t。

—Must I return the book now? 我必须现在归还这本书吗？

—No, you needn’t. / Yes, you must. 不，不必。/是的，必须现在归还。

4. may和might

(1) 表示允许

①表示请求允许(即请求别人允许自己做某事), 两者都可用, 只是might表示的语气较委婉(但并不表示过去)。

May I come round in the morning? 我早上来行吗?

I wonder if I might use your phone. 不知可否用一下你的电话。

②表示给予允许(即自己允许别人做某事)，只能用may 而不能用might。

You may stop now. 你现在可以停下来了。

You may leave when you’ve finished. 你做完以后就可以走。

[注意]

might 表示允许，通常不表示过去，但是在间接引语(即宾语从句)中可以用作 may 的过去式来转述已给予的允许。

She said that he might take her dictionary. 她说他可以拿走她的词典。

(2) 表示推测

两者都可用，只是 might 比 may 语气更不确定，表示的可能性更小(注意此时的might并不表示过去)。在句型使用方面：may通常用于肯定句或否定句，一般不用于疑问句(疑问句中用 can)，而might 则可用于肯定句、否定句或疑问句。

He may be at home now, but I’m not sure. 他可能在家里，但是我不确定。

Might he know the answer? 他可能知道答案吗？

5. should

(1) 表示“应该”，常用来表示劝告、建议, 认为“某人应该做某事”或“有义务、责任做某事”。

We should obey traffic rules. 我们应该遵守交通规则。

You shouldn’t leave him alone. 你不应该不搭理他。

[注意]

此时它可以和 ought to, be supposed to 互换使用 。

(2) should (ought to)表示推测时，是指有一定根据的推测，意为“可能、应当”。

—When can I come for the photos? I need them tomorrow.

我什么时候可以来拿这些照片？我明天需要它们。

—They should be ready by 12:00. 十二点的时候就可以准备好了。

It’s nearly seven o’clock. Jack should be here at the moment.

快七点了。杰克可能快到了。

Step 3  Practice

1. Match the signs with the rules and warnings.

a        b     c

d        e       f

1  No smoking.

2  No eating or drinking.

3  Children crossing.

4  Danger! Be careful of falling rocks.

5  Children should be taken care of by parents.

6  Do not drink and drive.

(1) Ask the students to read the rules.

(2) Ask the students to match rules with the signs.

(3) Check the answers.

Answers: 1—c  2—b  3—d  4—e   5—f  6—a

2. Read the list of rules and write sentences using must, mustn’t, should or shouldn’t.

London Indoor Climbing Centre

Visitors please note:

Dos                                                              

· Check in at the main gate when you come to the centre.

· Climb with someone.

· Wear a hard hat at all times.

· Wear the correct climbing shoes.

· Wear comfortable clothes.

Don’ts

· Don’t climb without a rope.

· Don’t eat or drink anywhere except in the restaurant.

· Don’t listen to personal music players while climbing.

· Don’t talk on a mobile phone while climbing.

(1) Give the students a few minutes to read about London Indoor Climbing Centre.Tell them to read the dos and don’ts carefully.

(2) Ask them to write the sentences about the rules and suggestions.

(3) Check the answers with the whole class.

Answers:

1. You must check in at the main gate when you come to the centre.

2. You should climb with someone.

3. You must wear a hard hat at all times.

4. You must wear the correct climbing shoes.

5. You must wear comfortable clothes.

6. You mustn’t climb without a rope.

7. You mustn’t eat or drink anywhere except in the restaurant.

8. You shouldn’t listen to personal music players while climbing.

9. You shouldn’t talk on a mobile phone while climbing.

3. Work in pairs. Explain why the rules in Activity 2 are important.

— Why must you check in when you come to the centre?

— Because they want to know who is there.

1 Why must you climb with someone?

2 Why must you wear comfortable clothes?

3 Why mustn’t you climb without a rope?

4 Why shouldn’t you listen to music while climbing?

(1) Ask the students to suggest reasons for the rules in pairs. Ask the partner if the suggested reasons are correct. If not, suggest another reason.

(2) Invite a few pairs to give reasons for the class.

Step 4  Vocabulary

1. Complete the passage with the correct form of the words in the box.

  although   keep    stream    tourist    worry 

People are very (1) _______ about the conditions of the ancient forests of Canada and want to save them. Many visitors to the forests use knives to cut their names into the trees, some of which are hundreds of years old. (2) ________ there are litter bins, people still throw rubbish into the (3) _______ and this causes plants and fish to die.

    People from local villages have helped clean up the forests. We hope (4) _______ will play their part in (5) ________ Canada’s forests clean too!

(1) Ask the students to look at the words in the box. Make sure they know the meaning of the words.

(2) Read the passage and then use the correct form of the words to complete the passage.

(3) Check the answers with the whole class.

Answers:

(1)worried   (2)Although  (3)steam(s)   (4)tourists   (5)keeping

2. Now write possible rules for visitors to the forests.

1. You should 　　　　　　　　　　　　　　　 　　.

2. You shouldn’t 　　　　　　　　　　　　　   　　.

3. You must　　　　　　　　　　　　　　　    　　.

4. You mustn’t 　　　　　　　　　　　　　　  　　.

Check the answers in groups.

Answers:

1. You should help clean up the forest.

2. You shouldn’t throw rubbish into the streams .

3. You must take your rubbish home.

4. You mustn’t cut your names into the trees.

3. Complete the sentences with the words in the box.

  gun    smooth    sticks   stone   sudden   tent    whenever 

1 Come and visit me ________ you have time.

2 The wall is made of _______.

3 The path to the top is not very ________.

4 Remember to take a _______ with you to sleep in, because it might rain.

5 He lifted up the _______ and pointed it at the bear.

6 There was a ________ noise in the woods and we all stopped moving.

7 Birds use small _______ and leaves to make a home.

(1)Work through the sentences orally with the class.

(2)Ask the students to complete the sentences.

(3)Check the answers in pairs.

Answers:1 whenever  2 stone  3 smooth  4 tent  5 gun  6 sudden  7sticks

(4)Ask the students to read the sentences together.

Step 5  Reading

Listen and read the passage. And then answer the questions.

1 What does Zhang Wenpeng try to say with his drawing?

2 What does Zhou Zhiyun try to say with his painting?

3 What does the school suggest the students should do?

4 How can a school become a “green school”?

(1)Ask the students to read the questions first and predict what the passage will be about.

(2)Ask the students to listen and read the passage carefully. And then find the answers to the questions.

(3)Check the answers together.

Answers:

1 Pollution is causing damage to the progress we’ve made.

2 People mustn’t waste electricity.

3 Students should pass on what they have learnt at school to their parents and neighbours.

4 A school can become a “green school” by including education about the environment in the timetable.

Step 6  Listening

Listen and complete the sentences.

1 The first thing you have to do is to ______________ carefully.

2 Think about where ______________ and whether there are ______________.

3 You should only take marked ______________.

4 Make sure you know where ______________ for lunch.

5 Don’t forget to tell people to ______________ for the picnic.

6 Don’t walk when it is ______________ or in ______________.

7 You must not try out a ______________ with a group.

(1) Tell the students to read the sentences and think about how they might be completed. Play the recording. Tell the students to listen carefully.

(2) Play the recording again and ask the students to complete the sentences.

(3) Tell the students to compare their answers with their desk partner.

(4) Choose some students to read the sentences one by one.

Answers:

1 The first thing you have to do is to plan the walk carefully.

2 Think about where_you are going to walk and whether there are clearly marked paths.

3 You should only take marked paths.

4 Make sure you know where you can stop for lunch.

5 Don’t forget to tell people to bring food for the picnic.

6 Don’t walk when it is too hot or in very bad weather.

7 You must not try out a new walk with a group.

Step 7  Around the world

(1) Ask the students to read the passage about ecotourism.

(2) Ask the students to suggest places in China where ecotourism would be good.

(3) Collect suggestions in class.

Step 8  Module task: Writing advice for visitors to China

1. Work in pairs. Discuss and give advice for visitors to China. Talk about:

• visiting someone’s home

• eating and drinking

• travelling on public transport

• behaving politely in public

• visiting tourist sights

(1) Put the students in pairs to think about the five headings listed.

(2) Ask them to discuss and make notes of dos and don’ts for each heading.

(3) Check the ideas with another pair.

2. Write your advice.

You must …

You mustn’t …

You should …

You shouldn’t …

(1) Ask the students to write sentences according to their notes.

(2) Check the use of must and should.

3. Work in groups and compare your advice. Choose the five most useful pieces of advice for visitors to China.

(1) Ask the students to work in groups to compare their sentences.

(2) In class, choose students to read their sentences aloud.

(3) Choose the five most useful pieces of advice.

Step 9  Homework

1. Go over what you’ve learnt in Unit 3.

2. Preview the new words and expressions in Module 5.

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