资源简介

(共23张PPT)
Unit2 Home Sweet Home
Section A
What can you do for your home
(3a-3c)
进一步梳理、归纳用 "Can/Could you... " 提出请求和 "Can/Could I... " 请求许可的句型结构，理解两者在语气和使用场景上的区别。
在具体语境中，对请求和许可做出恰当回应（如肯定回答 "Sure./No problem." 或否定回答 "Sorry, I can't..."）。
能在实际场景中（如求助、借物品等）灵活运用所归纳结构性知识进行礼貌交流。
Learning goals
Translate
等不及做某事
帮助某人做某事
在墙上
为某人买某物
在......前面
没问题
让人感到宾至如归
把...加入...
1.can't wait to do sth.
2.help sb. do sth.
3.on the wall
4.buy sth. for sb.
5.in front of
6.no problem
7.make sb. feel at home
8.add sth. to sth.
Ask and answer in pairs
chores:
feed the fish
pack up things
sweep the floor
hang up photos
clean the bathrooms
water plants
walk the dog
make the bed
do the dishes
A： What chores can you do
B: I can feed the fish
Review 2a and say
When Jim’s parents wants their children to help them , what does he\she say
Jim, can you help me hang up the clock on the wall
Helen, could you move this chair to their room
Peter, can you help me clean up their room
can\could for polite requests
Read and sum up
can\could for polite _________
Could we keep some fish here
Can I grow some flowers there
Can I hang out with my friends after lunch
permission
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!
Read the questions with can or could. Notice how they answered
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!
Write R for requests or P for permission next to each question.
R
P
P
R
can\could questions response response
for polite requests Can you take care of them every day？ Could you please help me hang up the photos Could you please sweep the floor Sorry, I have to …
for permission Could we keep some fish here Can I grow some flowers there can I hang out with my friends after lunch Yes,you can. OK. Sorry, you have to …
Yes. \OK.
Sure.\Of course.
Sum up
情态动词can\could
情态动词can
表示能力，意为“能，会”Can you swim？你会游泳吗？
can是情态动词，没有人称和数的变化，但有时态的变化，它的过去式为could，其后可直接接动词原形
注意事项
-情态动词could作为can的过去式时，表示过去的能力和可能性，其否定形式为could not，可缩写为couldn’t
含义
用法
对提出请求或征询许可的句型做否定回答时，通常以sorry或I’m sorry开头
表示许可，意为“可以”，相当于may(比may更口语化，may较正式)。Can you help me？你能帮我吗？
情态动词could可用于礼貌地提出要求或征询许可，此时并非can的过去肯定回答：Of course./Certainly./OK./Sure./No problem.等
否定回答：Sorry./Certainly not./I’m afraid I can’t./No, you can’t等.+说明理由式
用于提出邀请。对其作肯定回答通常用“Sure./Of course./Certainly./Yes，I'd love (like) to.”等，作否定回答通常用“Sorry/No，I can't.”等。
情态动词could
Grammar
1.can是情态动词，没有人称和数的变化，但有时态的变化，它的过去式为could，其后可直接接动词原形，其用法如下：
情态动词can的用法
1)表示能力，意为“能，会”。Can you answer the question？你能回答这个问题吗？
(2)表示许可，意为“可以”，相当于may(比may更口语化，may较正式)。此外，could也可以表示许可，语气更加委婉。Could you help me find it？你能帮我找到它吗？
(3)用于提出邀请。对其作肯定回答通常用“Sure./Of course./Certainly./Yes，I'd love (like) to.”等，作否定回答通常用“Sorry/No，I can't.”等。
—Can he come to my party？他能来参加我的宴会吗？
—Yes.He'd love to.是的。他很乐意。
can句式变化
can句式变化
(1)在变否定句时，直接在后面加上“not”，写作can't或cannot。如：
I can speak French.我会讲法语。 →I can't speak French.我不会讲法语。
(2)在变一般疑问句时，can直接移到主语前(原主语的首字母改成小写，第一人称应变为第二人称)即可。如：
I can play the piano.我会弹钢琴。 →Can you play the piano？你会弹钢琴吗？
其肯定回答可用yes，OK或of course等；否定回答可用no或sorry等。如：
—Can you look after my books，please？你能照看一下我的书吗？
—OK.可以。
情态动词could的用法
情态动词could作为can的过去式时，表示过去的能力和可能性，其否定形式为could not，可缩写为couldn’t,其用法如下：
（1）情态动词could可用于礼貌地提出要求,此时并非can的过去式
Could you please take the dog for a walk
请你去遛遛狗好吗？
（2） could可用于征询许可，此时并非can的过去式
Could I go out for dinner with my friends
我能和朋友一起出去吃（晚）饭吗？
3.注意事项
1.对提出请求或征询许可的句型做否定回答时，通常以sorry或I’m sorry开头。
Eg.—Could you help me with my English now 你现在能帮我学英语吗？
—I’m sorry, but I have a football match ten minutes later. 抱歉，我十分钟后要参加一场足球赛。
2.如果问句中使用could，回答时要用can或can’t，不能用could或couldn’t。
Eg.—Could I use your bike 我能用一下你的自行车吗？
—Sure, you can. 当然可以。
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, could I go to the toilet D. Could I use your computer
A：________________________
B: Of course you can.
A：________________________
B: Yes, if you are careful with it.
A：________________________
B: No, you can’t. you have a basketball game tomorrow, remember You need a good rest.
A: Can I go to the movies
B: of course.
A：________________________
B: I can’t. I have to do some work now.
C
D
B
A
Ask and answer in pairs
A： Mr. Lake, could I go to the toilet
B: Of course you can.
A：Could I use your computer
B: Yes, if you are careful with it.
A：Can I stay out until eleven
B: No, you can’t. you have a basketball game tomorrow, remember You need a good rest.
A: Can I go to the movies
B: of course.
A：Could you give me a ride to town now
B: I can’t. I have to do some work now.
until（后接时间点或从句） 直到……为止
作介词；表示“直到……为止”，后接时间点作连词
Make up conversations for each setting, using can or could.
1. You’re at your friend’s home. You want to call your parents, but your phone is dead.
2. You were sick at home yesterday. Your friend went to an English and took notes. You want to know more about the class.
3. You are holding a large box. It is difficult to open the door. Your neighbour comes.
“death”是名词，意为“死亡”。His death made us very sad.
“die”是动词，意为“死；去世”，强调动作。
My pet dog died last week.（我的宠物狗上周死了。）
A: Can/ Could I use your phone
B: Sure./ Of course
1. You’re at your friend’s home. You want to call your parents, but your phone is dead.
Make up conversations for each setting, using can or could.
1. You’re at your friend’s home. You want to call your parents, but your phone is dead.
2. You were sick at home yesterday. Your friend went to an English and took notes. You want to know more about the class.
3. You are holding a large box. It is difficult to open the door. Your neighbour comes.
A: Could you please lend your English notes to me
B: Sorry , I have to …
C:Sure./ Of course
1.You were sick at home yesterday. Your friend went to an English classand took notes. You want to know more about the class.
Make up conversations for each setting, using can or could.
1. You’re at your friend’s home. You want to call your parents, but your phone is dead.
2. You were sick at home yesterday. Your friend went to an English and took notes. You want to know more about the class.
3. You are holding a large box. It is difficult to open the door. Your neighbour comes.
hold为动词，
①表示“拿着；握住” Hold the book in your left hand.（用你的左手拿着这本书。）
②意为“举办；举行” We will hold a sports meeting next week.（我们下周将举办一场运动会。）
③表示“容纳；包含” This box can hold many things.（这个盒子能容纳很多东西。）
【常见搭配】hold on（等一下；坚持）；hold up（举起；阻挡）。
A: Could you please help me open the door
B: Sure./ Of course
2. You are holding a large box. It is difficult to open the door. Your neighbour comes.
Make up conversations for each setting, using can or could.
1. You’re at your friend’s home. You want to call your parents, but your phone is dead.
2. You were sick at home yesterday. Your friend went to an English and took notes. You want to know more about the class.
3. You are holding a large box. It is difficult to open the door. Your neighbour comes.
①ask表示“询问；打听”可接双宾语，即“ask sb. sth.”结构，问某人某东西。
②ask意为“请求；要求”,用于“ask sb. to do sth.”结构，意为“要求某人做某事”,其否定形式是ask sb not to do sth（要求某人不要做某事）。“ask for”表示“请求；要求得到”。
③ask表示“邀请”
They asked us to their party.（他们邀请我们参加他们的聚会。）
A: Could you please help me bring gloves and rubbish bags
B: Sure./ Of course
4. You and your classmates want to help clean up the community. Ask your classmate to bring gloves and rubbish bags.
一、单项选择
1. ________ you please help me make a flyer for World Wildlife Day
A．Could B．Should C．Must D．Need
2.Your little brother ______ play Chinese chess very well now.
—Yes, but he ______ do it last year.
A．can; could B．could; couldn’t C．can; couldn’t
3.—Could I go out with my friends tonight
—Sure, you ________. But you must come back by 10.
A．might B．could C．can
4.My little sister _______ walk when she was one year old.
A. can B. could C. will D. shall
Exercise
Thank you

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