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Sweet Home
Unit 2
Grammar Focus
Learning Objectives
By the end of this lesson, we will be able to：
1. understand the differences between “can” and “could” for requests and permission.
2. use “can” and “could” correctly in exercises.
3. use “can” and “could” in real-life conversations, like asking for help.
Could you please sweep the floor
OK, Dad. I’ll do it at once.
Could I hang out with my friends
after lunch
Sorry, Jim, but you have to pack up your things first.
Yes, good idea!
Can I put some flowers on the table
Can you help me hang up the photos
Sure./No problem!
Read the questions with can or could. Notice how they are answered.
Then write R for requests or P for permission next to each question.
Could you please sweep the floor Yes, Mum. I’ll do it at once.
Could I hang out with my friends after lunch Sorry, Jim, but you have to pack up your things first.
Can I put some flowers on the table Yes, good idea!
Can you help me hang up the photos Sure. / No problem!
3a
What are they？
They’re modal verbs.
Could sounds more polite than can.
What differences between them？
Could you please sweep the floor OK, Mum. I’ll do it at once.
Could I hang out with my friends after lunch Sorry, Jim, but you have to pack up your things first.
Can I put some flowers on the table Yes, good idea!
Can you help me hang up the photos Sure. / No problem!
3a
What sentences are they
They’re Yes/No question.
How to answer them
Positive answer.
Negative answer.
Read the questions with can or could. Notice how they are answered.
Then write R for requests or P for permission next to each question.
Could you... Can you...
Could I ... Can I ...
Positive answer
Negative answer
Question
Summary
Yes, ....
Sure. / No problem!
OK.
All right.
No,....
Sorry,...
Yes, good idea!
Sure.
Of course.
No,....
Sorry, ....
I’m sorry, you can’t.
Could you please sweep the floor OK, Mum. I’ll do it at once.
Could I hang out with my friends after lunch Sorry, Jim, but you have to pack up your things first.
Can I put some flowers on the table Yes, good idea!
Can you help me hang up the photos Sure. / No problem!
3a
R
P
R
P
Read the questions with can or could. Notice how they are answered.
Then write R for requests or P for permission next to each question.
1. _____________ you help me carry these books They are too heavy.
2. ______________ I have a look at your new magazine
3. I _________ speak a little English.
4. ______________ you pass me the water, please
Fill in the blank with can or could. Then write R for requests, P for permission or A for ability next to each.
Could / Can
Could / Can
can
Could / Can
R
P
A
R
1. I can play the piano.（改為一般疑問句）
______ ______ play the piano
2. Could you please clean your room （作肯定回答）
______, ______ ______.
3. Can I use your computer （改為同義句）
______ I ______ your computer
Complete the following questions as required.
Can you
Yes I can
Could use
Choose the best question to complete each conversation.
A. Could you give me a ride to town now B. Can I stay out until eleven
C. Mr Lake, can I use your toilet D. Could I use your computer
1. A:_______
B: Of course you can. Let me show
you the way.
2. A:_______
B: Yes, if you are careful with it.
4. A: Can I go to the movies
B: Of course.
A: _______
B: I can’t. I have to do some work now.
3. A: ________
B: No, you can’t.You have a basketball
game tomorrow, remember You need
a good rest.
3b
A
B
C
D
Make up conversations for each setting, using can or could.
3C
1. You are at your friend’s home. You want to call your parents, but your phone is dead.
A: Can / Could I use your phone B: Sure./ Of course.
2. You were sick at home yesterday. Your friend went to an English class and took notes. You want to know more about the class.
A: Could you lend me your notes about yesterday’s English class
B: Sure. / Of course.
4. You and your classmates want to help clean up the community. Ask your classmates to bring gloves and rubbish bags.
Make up conversations for each setting, using can or could.
3C
3. You are holding a large box. It is difficult to open the door. Your neighbour comes.
A: Could you help me open the door B: OK.
A: Can you bring gloves and rubbish bags
B: All right.
Language is a powerful tool and it enriches our interactions and experiences.
語言是一種強大的工具，它豐富了我們的互動和經歷。
一、用can或could填空
1. ________ you swim I want to learn.
2. ___________ I have another piece of cake It's so delicious.
3. He ________ play the guitar very well when he was ten.
4. ________ you pass me the dictionary on the shelf It’s a bit high for me.
Can
Could/Can
could
Could
二、按要求改寫句子
1. I can play basketball. (改為一般疑問句)
________ ________ play basketball
2. Could you please open the door (作肯定回答)
________, ________ ________.
3. She could ride a bike at the age of six. (改為否定句)
She ________ ________ a bike at the age of six.
Can you
Sure I can
couldn’t ride
三、翻譯句子
1. 我可以在這兒停車嗎？
2. 你能幫我搬一下這張桌子嗎？
3. 他小時候會說兩種語言。
Can I park here
Could you help me move this desk
He could speak two languages when he was young.
Observe your daily life and write down five real-life situations where you can use “can” and “could” to make requests or ask for permission.
Basic homework
Practical homework
Write down the rules for using “can” and “could” in requests and permissions.
Write a short passage about an event where you need to ask for permission or make a request by using “can” and “could” .
Extended homework
Thanks!
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