资源简介

(共26张PPT)
Unit 2 Home
Sweet Home
Section A (3a~3c)
学习目标
1
2
能够识别 can、could 在请求和许可语境中的语义差异，清晰区分不同情境下的用法；
通过相应练习及拓展活动，提升在不同生活场景中运用 can / could 进行听、说、读、写的能力。
Lead in
1.请大家马上戴上耳罩可以吗？
_________ please put earmuffs on right away
2. 请你帮我传话给他们可以吗？
________ please give them a
message for me
3. 请把门后的钥匙拿给我。
_________please get the key off
the back of the door for me
4.我要纸巾。
_______ have a napkin
Could you
Could you
Could you
Could I
polite requests
polite requests for permission
Which sentences are polite requests
for permission
Which sentences are polite requests
Could you please sweep the floor Yes, 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.
Can I put some flowers on the table Yes, good idea!
Can you help me hang up the photos Sure. / No problem!
新课讲授
3a
Read the questions with can or could. Notice how they are answered. Write R for requests or P for permission next to each question.
R
P
P
R
How can we use Can/Could
Read the sentences. Find out the usage of can/could.
情态动词 can & could 的用法
情态动词can和could可用于向对方提出请求，也可用于请求对方允许自己做某事。它本身不能作谓语，必须和动词原形一起构成谓语。
1. 用于提出要求或请求 Can/Could you please... （重点）
2. 用于请求许可 Can/Could I... （重点）
3. 用于表示能力 can表示现在的能力，could表示过去的能力
Read the sentences. Match the two parts.
Can I hang out with my friends after lunch
Can I grow some flowers there
Can I invite my friends to our new house
Could I go out
Could we keep some fish here
Can you sort your things into those boxes
Can you take care of them every day
Could you please help me hang up the photos
Could you please sweep the floor
Make polite requests
提出请求
Ask for permission
请求许可
Discuss in groups to find out how to answer the Can/Could questions.
常用句型 Can / Could you (please) do sth.
肯定答语 Yes, sure/of course. 好的，当然可以。
No problem. 没问题。
With pleasure. 乐意帮忙。
Sure/Of course/Certainly. 当然可以。
否定答语 Sorry, I can't. I have to... 对不起，我不能。我得...
Sorry, I'm going to... 对不起，我将...
I'm afraid I can't. I have to... 恐怕不行。我得...
I'm afraid not. 恐怕不行。
Make polite requests
提出请求
Discuss in groups to find out how to answer the Can/Could questions.
常用句型 Can / Could I do sth.
肯定答语 Yes, you can. 是的, 你可以。
Of course you can. 当然可以。
Yes, please. 是的，去吧/用吧/......
否定答语 Sorry, you can't. 对不起，你不可以。
Sorry, I'm afraid you can't. 对不起，恐怕不行。
Ask for permission
请求许可
Complete the sentences according to the pictures and key words.
If your mom want you to...
take the dog for a walk
_______________ take the dog for a walk
Could you please
OK, _____ I want to watch one show first.
but
If your mom want you to...
take out the rubbish
______________ take out the rubbish
Could you please
Yes, sure/____________.
No problem
Exercises
Complete the sentences according to the pictures and key words.
If you want to...
go out for dinner with your friends
________ go out for dinner with my friends
Could I
______, that should be OK.
Sure
If you want to...
get something to drink
after the movie
_________ get something to drink after the movie
Could we
Sorry/No, you ______. You have a basketball game tomorrow.
can’t
Let's think and fill in the blanks.
1.When we need to ask others for help, we should say __________________, because it sounds more polite.
2.When we can help others, we should say__________________________.
3.When we can't help others, we should say ___________.
Could you please ...
Sure / Of course / All right
Sorry, I can't
在回答用could 提出的请求时，通常不用 could而用 can。
3b
Choose the best question to complete each conversation.
A. Could you give me a ride to town now
C. Mr Lake, could I go to the toilet
B. Can I stay out until eleven
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.
3. A: _______________________
B: No, you can’t. You have a basketball game tomorrow, remember
You need a good rest.
C
D
B
A. Could you give me a ride to town now
C. Mr Lake, could I go to the toilet
B. Can I stay out until eleven
D. Could I use your computer
4. A: Can I go to the movies
B: Of course.
A: _______________________
B: I can’t. I have to do some work now.
A
3c
Make up conversations for each setting, using can or could.
You’re at your friend’s home. You want to call your parents, but your phone is dead.
___________________________
____________________
Sure. / Of course.
Can / Could I use your phone
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.
___________________________________
________________
Sure. / Of course.
Can / Could I borrow your notebook
Make up conversations for each setting, using can or could.
Make up conversations for each setting, using can or could.
3. You are holding a large box. It is difficult to open the door. Your neighbour comes.
_____________________________________
_________________
Sure. / Of course.
Can / Could you help me open the door
Make up conversations for each setting, using can or could.
4. You and your classmates want to help clean up the community. Ask your classmates to bring gloves and rubbish bags.
______________________________________________________
_________________
Sure. / Of course.
Can / Could you bring gloves and rubbish bags
Choose one setting from your daily life, then make a long conversation using can or could.
A: Ouch! I've fallen.
B: Are you okay That looks painful.
A: My knee really hurts. Could I ask you to help me up
B: Absolutely. Do you think you can stand steadily
A: I'm not certain. Could I hold your hand for more support
B: Of course. Do you think you can walk
A: I don't know. Could you help me walk to that bench over there
B: No problem. Let's take it slow.
For example
Pair work
Summary
know how to answer the questions.
know the structures and functions of the sentences.
know the difference between can/ could.
After learning this lesson, I can
Can/Could you… (Make requests)
Can/Could I… (Ask for permission)
1. 用于请求或请求许可：could语气更委婉，有礼貌。
2. 用于表示能力：can表示现在的能力，could表示过去的能力。
肯定回答：Sure./ Certainly./ Yes, I can./ Of course./ No problem...
否定回答：Sorry, I can’t. I have to…/Sorry, I’m going to...
肯定回答：Sure./ Yes, you can./ Of course, you can.
否定回答：Sorry, you can’t./ I’m afraid you can’t.
Language points
until prep.到......时；直到......为止
讲
练
They didn't have a car until last year.
You will never truly understand your parents' great love until you grow up.
例
Mr. Peter ______ go to bed ______ he finished his work last night.
A. wasn’t; until B. don’t; until C. didn’t; until D. isn’t; until
C
until 到······时；直到······为止 常与延续性动词连用，引导时间状语从句，表示动作直到until所表示的时间才结束
not…until 直到......才.... 常与非延续性动词连用，表示动作
直到until所表示的时间才发生
词
be careful with 注意；当心
词
讲
练
Be careful with the knife while cooking, and don't cut your fingers.
Be careful not to wake the baby.
Be careful — the floor is slippery.
例
当你切碎西红柿时，当心你的手指。
When you cut up the tomatoes, please ________________ your fingers.
be careful with
be careful (not) to do sth. “小心(不要)做某事”。
be careful 可单独使用，表示“小心，当心”，相当于look out 或watch out。
dead adj.不运行的；死的
词
讲
拓
My phone went dead, so I need to charge it.
There were dead leaves on the ground after the strong wind.
I'm afraid he is dead.
例
注意：表示“死了多长时间”要用“have/has been dead for+时间段”或“died+时间段+ago”。
The poor man has been dead for ten years.
He died a week ago.
(1)【形容词】（因为缺电）不运行的
(2) 【形容词】死的 在句中作定语或表语。the dead 死者
dead adj.不运行的；死的
词
讲
练
His dog ________ last week and his ________ made him very sad.
A. died; die B. death; died C. died; death D. dead; death
与 dead 相关的其他单词：
die 【不及物动词】死亡 过去式：died, 现在分词：dying。
是短暂性动词，不能与时间段连用。die of/from“死于”
death 【名词】死亡
dying 【形容词】垂死的；临死的 只能作前置定语。
C
rubbish n. 垃圾
词
讲
练
Don’t throw away rubbish everywhere. It’s everyone’s duty to protect the environment.
Please put the banana peels into the rubbish bin.
例
海滩上很多垃圾，我们最好捡一捡。
There is a lot of ________ on the beach, we’d better pick it up.
rubbish
【不可数名词】同义词有：waste、trash、garbage、litter等。
a rubbish bag/bin 垃圾袋/桶 household rubbish 生活垃圾
take out the rubbish 倒垃圾 rubbish sorting 垃圾分类
当堂检测
根据汉语完成句子。
1. 你能帮我把这些照片挂起来吗？
you help me these photos
2. 我可以借你的自行车用一下吗？
I your bike
3. 请你帮我打扫一下客厅，好吗？
you please the living room
4. 妈妈，我放学后能和同学一起去公园吗？
Mum, I go to the park with my classmates
5. 你能告诉我怎么到达那家花店吗？
you tell me that flower shop
Could
Could
Could
could
after school
Could
how to get to
hang up
borrow
help me clean
Homework
背诵 3a 对话，用 5 个生词（如 until,
dead, note 等）各造 1 个句子。

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