吉林省长春市第九十七中学校人教版九年级英语全册课件：Unit8 It must belong to Carla Section A (共28张PPT)

课件28张PPT。Unit 8Section A
Grammar Focuswww.xkb1.comReviewTranslate the phrases.outside the window have fun
next-door neighbor
at first
run away
feel uneasy
have no idea
have fun (in) doing sth. 在窗外
玩得高兴
隔壁邻居
最初； 首先
逃跑
心神不安
一点不知道； 没办法
做某事很愉快--- Whose volleyball is this?
--- It must be Carla’s. She loves volleyball.
--- Whose book is this?
--- It must be Mary’s. J.K. Rowling is her favorite writer.
--- Whose hair band is this?
--- It could be Mei’s. Read the sentences below, paying attention to the colored parts.--- Whose notebook is this?
--- It must be Ming’s. It has her name on it.
--- Whose French book is this?
--- It could be Carol’s. She studies French.
--- Whose guitar is this?
--- It might belong to Alice. She plays the guitar.
--- Whose T-shirt is this?
--- It can’t be John’s. It is too small for him.Read more sentences.mustcan’t100%
probably true20%-80%
possibly true0
almost not true 表示推测的情态动词
在英语中，表示对某件事物的确定程度，即表示推测的时候，我们通常会用到以下情态动词: must, might, could, may, can’t, couldn’t。可能性： must > can/could > may/mightcan not (can’t)
could not (couldn’t)may not
might not情态动词表推测一、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。如果询问可能性时，应该用can。
He must know the answers.
他肯定知道答案。
He can't know the answers.
他肯定不知道答案
Can he know the answer?
他知道答案吗？二、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”。
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。
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。
could 还可用于表示客气、礼貌、委婉的请求语气。
Could you please help me with my homework?
你能帮我完成我的家庭作业吗？ 三、may / might
may, might表示推测“可能性”时，意思是“可能”，“也许”。might不表示过去时态，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。
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。 情态动词表示推测可以分为以下几种情况:
★情态动词+ do?此结构表示对现在或将来情况的推测和判断
—Do you know where she is now?
—I think she might travel in Beijing. ????
★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。
At this moment, my father can’t be working in the office. ★情态动词+ have done????此结构表示对过去情况的推测和判断。
The road is wet. It must have rained last night.?
★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。
Your mother must have been looking for you at that moment.根据句意, 从方框中选择正确的情态动词填空, 每项限用一次。
should, must, can’t, may not, mustn’t
1. That ______ be Lucy. She has gone to ???? Beijing on business.
2. There _________ be something wrong ???? with my watch. It isn’t working now.can’tmust3. He ________ know the answer, either.
Let’s ask that policeman.
4. You _______ swim in the river. It’s
dangerous.
5. You ________ look after your parents
when they become older. It’s your duty. may notmustn’tshould用must, might, could或can’t 填空
The toy car _______ be Jim’s. He is the
only kid at the picnic.
2. This Mp5 _______ be Linda’s. I know she has one.
3. The mobile phone _______ belong to
Lucy or Lily. They both have mobile
phones.
4. The man _______ be Mr Smith. He has
gone to Shanghai and he’ll be back in
three days. mustcould / mightcould / mightcan’t4a Choose the best way to complete each
sentence using the words in brackets.
The keys:might bemust becould becan’t becould be / must beA: 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 crowded.
B: The food _______________________.
4. A: Whenever I try to read this book, I feel sleepy.
B: It can’t __________________.4b Complete these responses.getting colder / cold outsidehaving a sore throat / illmust be deliciousbe that boring4c 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.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.Look at the two rooms below. Make guesses about the owner of each room.A：It could / might / can't be ... because ...
B：I guess so / I don’t think so. But it
might / could / must be ... because ...【浙江湖州】 — Who’s singing in the next room?
— It _____ be her. She has gone to New York.
A. can’t B. must
C. shouldn’t D. can
【解析】考查情态动词表推测。表示否定推测时，用can’t，意为“一定不……”。must表示推测时，意为“一定……”，用于肯定句；根据答语“她已经去了纽约”可知是否定推测，故选A。中考链接【2017湖北黄冈】41. —Whose T-shirt is this?
—It ______ be John' s. It’s ______ small for him.
A. can't; much too B. can't; too much
C. mustn't; much too
D. mustn't; too much
【解析】情态动词的用法。根据句意“它不可能是约翰的，对他来说太小了。”故排除C、D，too much为“太多”的意思，much too为“太”。故选A。【2017天津】— Where are you going this month?
— We______ go to Xiamen, but we're not sure.
A. needn’t B. must
C. might D. mustn't
【解析】 needn’t (不必)表建议； must (一定)表猜测的可能性很大； might (可能，也许)表不是很肯定的猜测。 mustn't(不允许)表命令。句意：---这个月你们将去哪？---我们或许去厦门，但还不确定。C【2017福建泉州】--- Have you decided where to go for your summer vacation?
--- Not yet. We _______ go to Qingdao. It's a good place for vacation.
A. may B. need C. must
【解析】句意：--- 你已经决定到哪里过暑假了吗？--- 还没有呢，我们也许去青岛，那是个度假的好地方。情态动词表示推测时，may表“可能”，must表“一定”，can’t表“不可能”。 A【2017铜仁】— Must I water the flowers now, mum?
—No, you ______. You _____ do it later.
A. mustn’t; must B. mustn’t; may
C. needn’t; may D. needn’t; must
【2014连云港】— ______ I know by what time you want the project to be done?
—By the day after tomorrow. ______ you finish it on time?
A. May; Can B. Must; Need
C. Could; Must D. Need; Would C A【2017长沙】—Who’s singing in the garden?
—It ______ be Mr. Brown. He always practices singing at this time.
A. must B. can’t C. need
【2014河北】I ______ follow you. Would you please repeat it?
A. can’t B. mustn’t
C. needn’t D. shouldn’t A A【2015安徽】 -- Do you have any plans for this Sunday?
-- I'm not sure. I _______ go to the countryside to see my grandmother.
A. can B. must C. may D. need
【2015江苏盐城市】 -- Do you have any plans for this summer vacation??-- I’m not sure. I _______ take a trip to Taiwan.? A. must B. need C. may D. should? C C