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(共26张PPT)
Unit 4
Helping out
Grammar
学习目标
1
To know the grammar rules for the usage of modal verbs “can, may, must” and relevant vocabulary, and distinguish and use modal verbs properly.
2
To master the functions of modal verbs “can
(ability), may (possibility) and must (necessity)” by analysing sentences to summarise rules.
新课讲授
Watch and speak out the sentence.
Doctors must wear masks during surgeries.
Visitors must wash their hands before entering patient rooms.
Watch and speak out the sentence.
Children must be quiet in the waiting area.
Smoking must not be allowed in the hospital.
Watch and speak out the sentence.
Watch and speak out the sentence.
You may use the wheelchair if needed.
Watch and speak out the sentence.
Family members may wait in the lounge.
Visitors may stay until 8 PM.
Watch and speak out the sentence.
You can leave after the injection.
You can drink water before the test.
Doctors must wear masks during surgeries.
Visitors may stay until 8 PM.
You may use the wheelchair if needed.
You can leave after the injection.
Well, crayons may carry viruses and spread diseases.
It can be boring to wait for X-rays and treatments.
There must be something for me to do.
Work out the rules
情态动词结构：
情态动词+动词原形
表示“可能”，表达可能发生某事以及某人可能做某事。
modal verb：
表示“能够，可能，可以”，表示能力，还可以表示对现在或将来的推测，但表示推测时，常用于否定句，表示“不可能”。
modal verb：
表示“肯定，必须”，表达肯定推测，或者做事的必要性。
modal verb:
may
can
must
确定的推测 不确定的推测 (可能性依次减弱)
肯定句 must can > could > may > might
否定句 can not could not > may not > might not
疑问句 can could
Read the sentences below and find more sentences with these structures in the reading passage.
(a)Well, crayons may carry viruses and spread diseases.
(b)It can be boring to wait for X-rays and treatments.
(c) There must be something for me to do.
It might sound impossible, but Leah didn’t give up.
5
Complete the sentences with must, may or can.
must
may
can
You ______ be thirsty now after the long run. Here is a bottle of water for you.
You didn’t bring an umbrella Take mine. It ______ rain later.
Here is my notebook. You ___ return it after the exam.
6
Practice
Look at the pictures and complete the dialogues with the correct form of the modal verbs.
Dialogue 1
A: Look at that man! It 1________ be
hard for him to carry all the boxes!
B: Let’s give him a hand.
must
7
Dialogue 2
A: That woman looks lost. She
2________ need help.
B: Yes. We 3________ go and ask her.
may
can
Dialogue 3
A: Is that Lily over there
B: It 4______ be her. She has the flu and has to stay at home.
A: That’s too bad. The lesson today is really important.
B: Don't worry. We 5_______ share our notes with her.
can’t
can
Work in pairs. Discuss things to do to help people
around you. Use the words and expressions from the
reading passage and the Useful expressions to help you.
Exampe
A helping hand
Who needs your help
Why do they need help
What can you do to help
Production
8
... may find it a challenge to... … help... get through...
... need a helping hand. There must be something for me to
Perhaps I can/could... do, such as...
Useful expressions
Show time
Checklist Stars
Language(语言正确)
Pronunciation(发音标准)
Body language(使用肢体语言)
Creation(有创意)
Excellent Great Good
A: We should talk about offering a helping hand to people around us.
Who do you think needs help
B: I think our classmate Tom might need some support.
A: Why do you say that
B: English is not easy for him. He may find it a challenge to keep up with
the lessons. I believe he needs a helping hand to feel more confident.
A: I see. Perhaps we can offer to study with him twice a week after school.
That might really help him get through this semester successfully.
B: Good idea. There must be something for me to do, such as helping him
practice pronunciation or explaining grammar points he doesn’t understand.
A: That sounds great. Let’s make a plan and ask him what he needs most.
Sample
Small kindness, like sharing notes, can heal more than medicine.
1. It can be boring to wait for X-rays and treatments.
结构: It + be + 形容词 + to do（形式主语）
解释: 描述做某事的主观感受。
例句:
It is important to listen carefully in class.
上课认真听讲很重要。
It is helpful to help parents with housework on weekends.
周末帮父母做家务很有帮助。
Language points
2. She has the flu and has to stay at home.
结构: have to + 动词原形（客观必要性）
解释: 因外部规则或情况而必须做某事。
例句:
We have to wear school uniforms from Monday to Friday.
我们从周一到周五必须穿校服。
She has to finish her science report before this Friday.
她必须在这周五之前完成科学报告。
You ______ finish your homework before watching TV.
You _____ ask the teacher if you don’t understand.
It ______ rain later. Take an umbrella.
Look at the sign! We ______ park our bikes here.
She is wearing a uniform. She ______ be a nurse.
The doctor is busy now. You ______ have to wait.
must
一、 请用may, must, can完成句子
can
may
can
must
may
当堂检测
二、英译汉
1. You must return the book by Friday.
你必须周五前归还这本书。
2. She can speak three languages fluently.
她能流利地说三种语言。
3. Students may choose their own topics for the project.
学生可以自己选择项目主题。
4. She must be very tired after working all night.
她工作了一整晚，肯定很累了。
Basic homework:
Write sentences using “must, can or may” to
describe rules or possibilities in a hospital.
Practical homework:
Create a short dialogue (6—8 lines) between a
nurse and a patient, using “must, can or may”.
Perform it with a partner in class.
Extended homework:
Interview a family member about a time he or
she needed help. Write 3 sentences using
“must, can or may” to summarise the story.
Homework

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