(共35张PPT)
Unit 8 It must belong to Carla.
人教新目标版 九年级上
SectionA 2d
Grammar Focus-4c公开课
Learning objectives
1．掌握下列词汇：attend，valuable，pink，anybody，laboratory，outdoors，coat，sleepy
2．理解并熟练运用情态动词must，might，could和can't表示推测的用法和区别。
3．会运用上述单词和相关句型对事情进行合理推测。
What’s the matter with the girl
1. What’s the matter with Linda
2. What are there in her schoolbag
3. Could Linda’s schoolbag be stolen Why
She felt very worried.She can’t find her
schoolbag.
Her books, her pink hair band and some tennis balls.
No, it can’t be stolen. There is not anything valuable in her schoolbag.
Tasks
Read 2d carefully answer the questions.
4.What did she do yesterday
5.Where did Linda last put her schoolbag
6 Could Linda’s schoolbag still be at the park Why
Her schoolbag might be at the park.
Yes. She left early, before the rest of her friends. She thought someone must have picked it up.
She attended a concert and went to a picnic.
Find out what Linda did and what they thought might have happened to her schoolbag.
fact ①
inference ①
fact ②
inference ②
fact ③
inference ③
fact ④
inference ④
It could be at the park.
Somebody must have picked it up.
① I attended the concert.
It might be in the music hall.
Where is Linda’s schoolbag
It can’t be stolen.
② There is nothing valuable in it.
③ I went to the picnic with it.
④ I left early, before my friends.
Do you think that Linda will find her schoolbag
Linda: Mom, I ’m really worried.
Mom: Why What’s wrong
Linda: I can’t find my schoolbag.
Mom: Well, where did you last put it
Linda: I can’t remember! I attended a concert
yesterday so it might be still in the music hall .
Mom: Do you have anything valuable in your schoolbag
2d
Listen and repeat.
What's wrong 怎么了？
last作为副词，意为“最近；上一次”。
attend a concert
出席音乐会
something valuable
一些有价值的东西
Linda: No, just my books, my pink hair band and some tennis balls.
Mom: So it can’t be stolen.
Linda: Oh, wait! I went to a picnic after the concert. I remember I
have my schoolbag with me at the picnic.
Mom: So, could it still be at the park
Linda: Yes. I left early, before the rest of my friends. I think
somebody must have picked it up. I’ll call them now to
check if anybody has it.
may/might/can’t/ could/must be+done
may/might/can’t/could/must +have done
1.I attended a concert yesterday so it might still be in the music hall.我昨天参加了一场音乐会，所以它有可能还在音乐厅里。
【词汇解读】attend vt. 出席；参加
attend是正式用语，侧重指参加会议、婚礼、典礼，去上课、上学、听报告等。
【活学活用】
1) 只有15个人出席这次会议。
2）我们都想去听李先生的报告。
Only 15 people attended the meeting .
All of us went to attend the lecture given by Mr. Li.
Language points
My mother attended an important meeting yesterday.
我妈妈昨天参加了一个重要的会议。
We are going swimming. Would you like to join us
我们要去游泳，你想跟我们一起去吗？
Will you join us in playing basketball
你会和我们一起打篮球吗？
I’m going to take part in the sports meeting.
我将要参加运动会。
【观察领悟】
意义 用法
attend
take part in
join
join in
出席;参加
指“参加”会议、典礼、婚礼等
参加会议或群众性活动
着重说明句子主语参加该项活动并在活动中发挥作用。
加入某组织、团体成为其中一员
常接表示组织的集体名词，如俱乐部、军队等。
参加小规模的活动,如游戏球赛等
join sb. in (doing) sth. 意为“和某人一道做某事”,in (doing) sth.有时也可省去。
【巧辩异同】attend， take part in，join或join in
2.Do you have anything valuable in your schoolbag 你的书包里有贵重的东西吗？
【词汇解读】 valuable形容词，意为“贵重的；很有用的；宝贵的”，在句中可用作定语，也可用作表语。用作表语时，可与介词to连用，常用短语be valuable to sb.“对某人来说很有价值”。anything valuable 一些贵重的东西。形容词valuable修饰不定代词anything要后置。当形容词修饰不定代词(something, anything, nothing等)时，形容词应放在不定代词的后面。
【活学活用】1) 这一经历对我很有用。
2） 他在教育问题上给我们提了宝贵的建议。
This experience is valuable to me.
He gave us valuable advice on the problems of education.
4. I think somebody must have picked it up.
我想一定有人捡到。
【词汇解读】 pick up意为“拿起；捡起”。它是由“动词+副词”
构成的短语，当其宾语是名词时，该名词即可位于up之后，
也可位于pick与up 之间；当其宾语是代词时，该代词必须
位于pick 与up之间。另外pick up 还有（开车）接人; (偶然) 学会的意思。
【活学活用】
1) 我的尺子在你的桌子下面，能请你帮我捡起来吗？
2） 把纸捡起来然后丢在垃圾桶里。
My ruler is under your desk. Could you pick it up for me
Pick up the paper and put it in the dustbin.
must have picked it up是“must+have+过去分词”的结构， must在此处表示推测, 意为“一定”。当情态动词后接have done时, 表达对过去的事情进行推测, 故must have done something表示“过去一定做过了”这样的意思。
—Linda has gone to work, but her bicycle is still here.
琳达已经去上班了，但她的自行车还在这里。
—She must have gone by bus.
她一定是乘公共汽车去的。
He might/could have arrived there.
他可能早就到那里了。
Linda’s really worried. She can’t find her schoolbag. She _________________ yesterday so it ___________ in the music hall. There wasn’t anything valuable in her schoolbag. So it ________ stolen. She _______________ after the concert. She remembered she had her schoolbag with her ____________. So it ______________ at the park. And she thought somebody must have _____________. Linda will call them now to check if anybody has it.
Fill in the blanks according to the conversation.
attended a concert
might still be
can’t be
went to a picnic
at the picnic
could still be
picked it up
Consolidation
Role-play the conversation.
Linda : Mom, I’m ...
Mom : Why What’s ...
Linda : I can’t ....
Mom : Well, where ...
Linda : I can’t remember ! I ....
Mom : Do you ...
Linda : No, just my books, ....
Mom : So it can’t ....
Linda : Oh, wait! I went .... I ...
Mom : So ...
Linda :Yes. I .... I.... I’ll...
Role play
1. 这是谁的排球
_______ __________ is this
这一定是卡拉的。她热爱排球运动。
It ______ be ________. She loves volleyball.
Whose volleyball
must Carla’s
2. 这是谁的发带？______ ____ ____ is this
它可能是梅的发带。或者可能属于琳 达。她们两人都是长头发。
It ______ be Mei’s hair band. Or it ______ belong to Linda. They _____ have long hair.
could
might
both
Whose hair band
Practice
Fill in the blanks.
3. 那晚你看见了什么？
_____ did you see that night
我不确定，但肯定不可能是狗。它更大。我想也许是一头熊或一匹狼。
I’m ___ ____, but it _____ ___ a dog.
It was bigger. I think it _____ ___ a bear
or a wolf.
What
not sure
can’t be
might be
语法重点: 情态动词表推测
表示可能、怀疑、允诺、愿望、义务、必要、猜测等的动词就是情态动词。情态动词可以表示说话人的语气或某种情态，也可以表示推测。
英语中表示推测的情态动词主要有 must, can, could, may, might, can’t等。
must ＞ can ＞ could ＞ may ＞ might ＞can’t
1. must
must表示可能性最大的肯定推测，意思是“一定、准是”。只能用于肯定句。如果要表示“一定不”，应该用can’t。
eg：He must know the answers. 他肯定知道答案。
2. may / might
may, might表示推测“可能性”时，意思是“可能”，“也许”。might语气更委婉，可能性更小。may, might表推测时，可用于否定句，但不用于疑问句。eg：He may / might not be at home, but I’m not sure. 他可能不在家，不过我也不确定。
3. can / could
can表示推测“可能性”时，一般用于否定句或疑问句。can在疑问句中意思是“会，可能”。
eg：He can't pick her schoolbag up. 他不可能拿了她的书包。
could 表示某事有可能发生或可能是事实。
eg：Don't eat it. It could go bad. 不要吃它，可能坏了。
The plane could be put off by the storm.
这趟飞机可能会因为暴风雨而推迟。
程度 肯 否 疑
must ★★★★ √ 一定;肯定/表示有把握的肯定推测
mustn't √ √ 禁止/表示绝对否定
may/might ★★★ √ 可能/表示不太有把握的肯定推测
may not/might not ★ √ √ 可能不/表示不太有把握的否定推测
can/could ★★ √ 可能/表示推测
can’t/couldn't ★ √ √
不可能/表示有把握的否定推测
情态动词表示推测的意义和用法
情态动词表示推测的意义和用法
（1）情态动词表示推测时，无时态区别，只有语气差别。表示推测的情态动词的语气强弱顺序如下（由强到弱）：
must ＞ can ＞ could ＞ may ＞ might
（2）含有must的句子（must表推测）变为否定句时，要用can’t
He must be at home. →He can’t be at home.
情态动词表示推测可以分为以下几种情况:
(1)情态动词+ do
此结构表示对现在或将来情况的推测和判断。
eg： —Do you know where she is now
—I think she might travel in Beijing.
(2)情态动词+ be doing
此结构表示对现在或将来正在进行的情况的推测和判断。
eg：At this moment, my father can’t be working in the office.
(3)情态动词+ have done
此结构表示对过去情况的推测和判断。
eg：The road is wet. It must have rained last night.
(4)情态动词+ have been doing
此结构表示对过去正在进行的情况的推测和判断。
eg：Your mother must have been looking for you at
that moment.
情态动词
1. She cans play the piano.
2. Tom could is at home.
3. They don’t can speak Japanese.
4. Do we can play basketball after school
Can you find the mistakes in the sentences
Can we can play basketball after school
She can play the piano.
Tom could be at home.
They can’t speak Japanese.
情态动词没有人称、数的变化，即情态动词第三人称单数不加s。
情态动词后面＋动词原形。
情态动词和助动词不能一起用。
1. 情态动词不能表示正在发生或已经发生的事情，
只表示期待或估计某事的发生。
2. 情态动词ought和have,后面只能接带to的不定式。
3.情态动词没有人称、数的变化，即情态动词第三人称单数
不加s。
4.情态动词没有非谓语形式，即没有不定式、分词等形式。
语法特征
Choose the best way to complete each sentence using the words in brackets.
1. A: Where’s Jean
B: I’m not sure. She __________ (is / might be/must be) in the laboratory.
2. A: Everyone is going to the pool after school.
B: Really It _________ (must be / can’t be /could be) hot outdoors.
might be
must be
n. 实验室
4a
3. A: That’s the phone.
B: Hmm. I wonder who it ________ (must be / could be / should be).
4. A: I wonder if these are Jim’s glasses.
B: They ________ (can’t be / might be / could be) his. He doesn’t wear glasses.
5. A: I hear water running in the bathroom.
B: It __________ (could be / must be / can’t be) Carla. She was thinking of taking a shower.
could be
can’t be
could be
adv. 在户外；在野外
4b
Complete these responses.
1. A: Many people are wearing coats.
B: The weather must be ________________________.
2. A: Sally has been coughing a lot.
B: She might be ____________________.
3. A: This restaurant is always very crowded.
B: The food ________________.
4. A: Whenever I try to read this book, I feel sleepy.
B: It can’t ____________________.
getting colder/ cold outside
having a sore throat/ ill
must be delicious
be interesting/ exciting
n. 外套
adj. 困倦的；瞌睡的
【妙辨异同】 sleepy
asleep
形容词，意为“困倦的；瞌睡的”。既可作定语，也可作表语。
形容词，意为“睡着的”，只能作表语，不能作定语。fall asleep 意为“入睡”。
【语境应用】根据句意, 用sleep, sleepy或asleep填空。
1) Look at that ________ dog.
2) Tom is _____________________. Please keep quiet.
3) I think people need eight hours of ________ a day.
4) Grandpa fell ________ when he was watching TV.
asleep
sleepy
sleep
sleeping / asleep / sleepy
What can you see in the picture
What are his/ her hobbies
Why do you think so
Who do you think lives in the room, a boy or a girl
Look at the picture and answer the following questions.
4c
A: It could be a girl’s room because it’s very tidy.
B: I guess so. But it might be a boy’s room because
the clothes look like boys’ clothes.
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