【新课标】Unit 8 SectionA(Grammar-4c)课件（新目标九年级Unit8 It must belong to Carla )

(共17张PPT)
Unit 8 It must belong to Carla.
Section A （Grammar-4c)
Review
at the picnic
belong to me=be mine
can't be stolen
the rest of friends
attend a concert
something valuable
go to a picnic
must have picked it up
在野餐
属于我
不可能被偷
剩下的朋友
出席音乐会
一些贵重的东西
去野餐
一定已经捡起它
Grammar Focus
Whose volleyball is this It must be Carla’s. She loves volleyball.
Whose hair band is this It could be Mei’s hair band . Or it might belong to Linda . They
both have long hair.
What did you see that night I’m not sure, but it can’t be a dog. It was bigger. I think it might be a bear or a wolf.
语法重点：情态动词表推测
定义
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。英语中表示推测的情态动词主要有 must，
can，could，may，might等。
语法特征
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.情态动词除ought 和have 外，后面只能接不带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。
can 可表示能力、允许、可能性、怀疑猜测，意为“可以，会，能”；can’t意为“不会，不能，不可以”，还有“不可能”之意。could为can的过去式，用法与can类似，常用于过去时态中；could还可用于现在时态中表示委婉客气，相当于can；could也可表示惊讶怀疑，不相信。can’t和couldn’t 一般用于否定句和疑问句中。
1
can
eg：He couldn’t be a thief.
2
may
may表示允许、也许，意为“也许；可能；可以”，语气不太可能。对may的一般问句的回答：
肯定回答一般是：Yes, please./ Certainly./ Sure等
否定回答一般是：Please don’t./No, you can’t/mustn’t.
might是may的过去式，与may用法类似，语气比may弱，表示推测的可能性更小，常用于肯定句和否定句中，不用于疑问句中。
3
must
must 表示必须要做的事，意为“必须，应该”。must一般问句的否定回答用needn’t或don’t have to , 而不用mustn’t， mustn’t意为“不可以，不能”，表示禁止，不许可。另外，must还可表示有把握的推测，意为“一定、肯定”。must的过去式还是must。
在回答以must开头的一般疑问句时，否定式需用need not (needn’t)，表示“不必”的意思。
eg：— Must we hand in our exercises today
— Yes, you must. ( No, you needn’t)
Choose the best way to complete each sentence using the words in brackets.
4a
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
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/must be
Complete these responses.
4b
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 ___________________.
cold
having a cold
must be good
be interesting
Look at this picture of a room. How much can you tell about the person who lives here Is it a boy or a girl What are his / her hobbies Discuss your ideas with a partner.
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.
1. Luckily, I ______________ (interview) by the
__________ (interview), a very old woman yesterday.
2. 同义句转换：
—My parents called the policemen, but they couldn’t
find anything strange.
—My parents called the policemen, but they ________
find _________strange.
3. There is someone_________(knock) at the door.
interviewer
could
knocking
was interviewed
nothing
Exercise
Ⅰ.填空。
Ⅱ.单项选择。
1.——Why are you so tired these days
——Well, I have _______ work to do.
A. too much B. too many
C. much too D . many too
2. —— _____ _____this balloon
—— It’s Amy’s.
A. Who ; is B. Whose ; are
C. Whose; is D. Who ; are
3. ——Look ! A book is on the floor . Whose is it
——It _____be Rick’s . It has his name on it.
A. mustn’t B. can’t
C. must D. need
4. —— Is Lisa at home
—— I’m not sure . She _____ be on the way home.
A. can’t B. could
C. should D. need
5. There is not ________ unusual in class.
A. something B. anything
C. some D. some thing
Thank you!