资源简介

(共40张PPT)
Unit 6
Electricity Everywhere
下
（沪教2025版）七年级
Grammar
1
3
Presentation
Practice
5
Production
7
Summary
2
4
6
8
Learning objectives
Lead in
Assessment
Homework
By the end of the lesson, I will be able to...
1
2
Learning objectives
00
3
understand and master the usages of modal verbs:can and cannot, may and may not, must and must not;
can talk with my partner about what my robot can do;
can write and speak sentences with can and cannot, may
and may not, must and must not;
Lead in
01
Can robots dance Let's enjoy a short video clip.
Lead in
01
Q: What can you see
Q: Who do you think can
save the world ”
Free talk
Lead in
01
Lead in
01
It's lightning outside.
Daisy and her brother Benny are at home.
Daisy is telling her brother Benny about her science lesson.
Daisy
Benny
Read the dialogue and pay attention to the words in bold.
02
Presentation
02
It was great. We learnt about electricity in our science class.
Yes, of course. But you must give it back to me because it's my favourite ruler!
How was your school day, Daisy
Daisy
Benny
Can you tell me what you know about electricity
We can't see it powering everyday things but we can see it when
there is a lightning storm.
Right. Mum told me we mustn't go outdoors during a storm. It's dangerous.
Yes, that's right. However, you can produce electricity safely by
rubbing a ruler against your sweater. Look at me!
Wow. That's fun! May I try
Listen again and pay attention to
the words in red.
02
Presentation
02
It was great. We learnt about electricity in our science class.
Yes, of course. But you must give it back to me because it's my favourite ruler!
How was your school day, Daisy
Can you tell me what you know about electricity
We can't see it powering everyday things but we can see it when there is a lightning storm.
Right. Mum told me we mustn't go outdoors during a storm. It's dangerous.
Yes, that's right. However, you can produce electricity safely by
rubbing a ruler against your sweater. Look at me!
Wow. That's fun! May I try
Please summarize the modal verbs in this dialogue.
can，can't，must，mustn't，may
can and cannot, may and may not, must and must not
02
Presentation
02
Modal verbs can be used to talk about ability, permission, obligation, etc.
Modal verbs
情态动词
obligation
n. 义务，责任
[ bl ɡe ( )n]
permission
n. 同意；许可
[p m ( )n]
ability
n. 能力；才能；本领
[ b l ti]
Modal verbs
02
Presentation
02
情态动词不能独立作谓语，必须和其他动词一起构成谓语。没有人称和数的变化，后面必须跟动词原形。
Let's sum up the rules!
After modal verbs such as can, may and must, we use the base
form of a verb.
We use can and cannot (can't) to say we are able or unable to do
something.
We use may and may not to ask for, give and refuse permission.
In less formal situations, some people like to use can and cannot
(can't) for the same purpose.
We use must and must not (mustn't) to tell people what to do or
what not to do.
02
Presentation
02
动词原形
02
Presentation
02
This robot can/cannot/can't fly.
Ann could swim at the age of three.
can和cannot
can 的否定式为 cannot, 可以缩写为 can't。
can 的过去式是 could, could not 可以缩写为 couldn't。
（1）can表示主语具备的能力，意为“能；会”；
could表示主语过去所具备的能力。
02
Presentation
02
- Could I stay here for a moment
- Yes, you can.
（2）can表示请求或允许，意为“可以”；
could表示请求时，语气更客气委婉，
回答时用can。
02
Presentation
02
（3）Can 用于表示可能性，
较多用于疑问句和否定句。
Can it be Danny
It can't be Lily's bag because there is Lisa's name on it.
Modal verbs
02
Presentation
02
may 和 may not
may的否定式为 may not。
may 的过去式是might。
02
Presentation
02
（1）may 用于第一人称表示征求对方的意见，意为“可以”，
比can更有礼貌，语气更委婉。
肯定回答时用“Yes, you may.”；
否定回答时常用“No, you can't/mustn't.”
- May I watch TV, Mum
-Yes, you may. / No, you can't/mustn't.
02
Presentation
02
（2）may表示推测时，意为“可能；也许”。
might可作may的过去式，也可代替
may说明现在的情况，语气比may弱。
Maybe these robots may save the world. But they may not do it alone.
Modal verbs
02
Presentation
02
must 和 must not
must 的否定式为 must not,
可以缩写为 mustn't。
must没有过去式。
Modal verbs
02
Presentation
02
（1）must表示“必须；应该”；
mustn't表示“不许；禁止；
绝对不可以”。
否定回答常用needn't或
don't have to。
There is a big danger. These robots must act quickly. But they must not make mistakes.
- Must they leave
-No, they needn't/ don't have to.
Modal verbs
02
Presentation
02
（2）must用于表示肯定的推测，且语气较强，
表示说话人相信某事是事实。
There must be someone in the room,
for the light is on.
The police officer ________ (can /may)
help the robots. But he __________
(must not /can't) fight the bad guys alone.”
can
Practice
03
Complete the sentence with can, can't , may, must not.
can't
Daisy got a robot for her birthday.
Daisy: Thank you, Dad. It is the best gift in the world!
Dad: You (1) _______ name your robot now.
Daisy: I think I'll call him “Bobo”.
Dad: That's a good name.
Daisy: How (2) _______ I turn him on
Dad: First you have to put the batteries inside here. Then you (3) _______
switch it on. Now you (4) _______ talk with “Bobo”.
Bobo: Hello. Please give me a name.
can/may
Practice
03
Complete the conversation with can, can't / cannot, may, may not, must, mustn't / must not.
can
can/may
can/may
Practice
03
Complete the conversation with can, can't / cannot, may, may not, must, mustn't / must not.
Daisy: Hello. I'll name you “Bobo”.
Bobo: I love my name, thank you.
Dad: Bobo, please tell us what you (5) _______ do.
Bobo: I (6) _______ dance and sing and play football. I (7) _______ play
chess and I (8)_______ speak Chinese, English and French.
Daisy: Wow! You (9) _______ help me with my homework then.
Bobo: If you have questions, you (10) _______ ask me. But you (11)
_______ do your homework yourself.
can
can
can
can
can
can/may
must
Practice
03
Complete the conversation with can, can't / cannot, may, may not, must, mustn't / must not.
Daisy: OK. I'll go swimming in the afternoon. (12) _______ you come
with me
Bobo: Sorry. I (13) _______________ swim. I (14) _______ stay away
from water. If I get wet, I'll become ill and won't work anymore.
So you (15) ______________________________ put me in the water.
Dad: Daisy, here are the instructions for “Bobo”. You (16) _______
read them very carefully and find out what you can and (17)
_______________ do.
can
cannot/can't
must
mustn't/must not/cannot/can't
must
cannot/can't
Role play the conversations in P89-90 by using the notes above.
Student 1
Act as Dad
Act as Daisy
Student 2
Work in groups of 3.
Our group can get ______ .
Loud, fluent and correct With body language and emotions Without book
(声音洪亮，对话流利，内容正确) （有肢体语言和感情） （脱离课本）
Practice
03
Complete the conversation with must, mustn't, can, can't, may or may not.
Sam: (1) _____________ you show me how to use this blender, please
I want to make a milkshake.
Mary: Yes, of course I (2)_____________. But first, let me tell you the
most important rules about using blenders.
Sam: OK.
Can
can
Practice
03
blender
n. 食物搅拌机
[ blend (r)]
milkshake
n. 奶昔
[ m lk e k]
Mary: First, you (3) _____________ make
sure the lid is closed before you
start it. Also, you (4)_________________
put too much stuff in it. You (5)_________
_______ fill it above this line. Alright, let's
put in two bananas and some milk.
must
can't/mustn't
can't
Practice
03
/mustn't
lid
n. 盖子
[lid]
stuff
n. 物品
[st f]
Sam: Okay. I've closed the lid.
(6) ___________ I start it now
Mary: Yes, you (7) _____________.
Good, that's enough. Now,
you (8) __________ pour the milkshake
into a glass, but leave some for me.
Remember: you (9) _____________ unplug
the blender when you're done, and you
(10) _____________ clean it afterwards.
May/Can
may/can
can/may
must
must
Practice
03
unplug
v. 拔掉…的电源插头
[ n pl ɡ]
Daisy is telling her little brother Benny
some dos and don'ts about school life.
Grammar in use
Dos
(1)____________________________________________
(2)____________________________________________
(3)____________________________________________
(4)____________________________________________
(5)____________________________________________
Production
04
Imagine you are Daisy.Your little brother Benny is going to primary school in the new term. You are telling him some dos and don'ts about school life. Write them down.
Grammar in use
>>>
You must be polite to your classmates and teachers.
Production
04
Grammar in use
Imagine you are Daisy.Your little brother Benny is going to primary school in the new term. You are telling him some dos and don'ts about school life. Write them down.
Don'ts
(1)____________________________________________(2)____________________________________________
(3)____________________________________________
(4)____________________________________________
(5)____________________________________________
Grammar in use
>>>
You mustn't eat in class.
Robots are good friends and assistants of human beings.
Summary
05
Modal Verbs
Summary
05
Modal Verbs
Assessment
09
Self-assessment
How well do you know about this lesson Tick (√)the boxes.
① Understand and master the usages of modal verbs:
can and cannot, may and may not, must and must not.
② I can talk with my partner about what my robot can do.
③ I can write and speak sentences with can and cannot, may
and may not, must and must not.
基础：
根据情态动词的基本含义和用法结构制作思维导图。
Homework
10
提升：
小组讨论，设定机器人执行任务的不同场景，运用所学情态动词编写对话并表演。
拓展：
观察家用电器的英文说明书，找出3个含情态动词的句子并在下次课上做报告。
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