九年級(jí)8單元GrammarFocus

1、Unit 8,Section A Grammar Focus,Review,Translate 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 玩得高興 隔壁鄰居 最初； 首先 逃跑 心神不安 一點(diǎn)不知道； 沒(méi)辦法 做某事很愉快,- Whose volleyball is this? - It must be Carlas. She loves volleyball. - Whos

2、e book is this? - It must be Marys. J.K. Rowling is her favorite writer. - Whose hair band is this? - It could be Meis.,Read the sentences below, paying attention to the colored parts.,- Whose notebook is this? - It must be Mings. It has her name on it. - Whose French book is this? - It could be Car

3、ols. She studies French. - Whose guitar is this? - It might belong to Alice. She plays the guitar. - Whose T-shirt is this? - It cant be Johns. It is too small for him.,Read more sentences.,must,cant,could might,100% probably true,20%-80% possibly true,0 almost not true,表示推測(cè)的情態(tài)動(dòng)詞 在英語(yǔ)中，表示對(duì)某件事物的確定程度，即

4、表示推測(cè)的時(shí)候，我們通常會(huì)用到以下情態(tài)動(dòng)詞: must, might, could, may, cant, couldnt。,一. can和could的區(qū)別和用法 1. can表示體力和腦力方面的能力, 或根據(jù)客觀條件能做某種動(dòng)作的“能力”。 Can you speak English？ can用在否定句和疑問(wèn)句中時(shí)有時(shí)表示說(shuō)話人的 “猜測(cè)”或 “不肯定”。 Can the news be true？ (在日常會(huì)話中, can可代替may表示“允許”, may比較正式),2. could 是 can的過(guò)去式, 表示過(guò)去有過(guò)的能力和可能性, 還有懷疑和不肯定的意思(在否定和疑問(wèn)句中)。 She

5、couldnt skate when she was five years old. （能力） At that time we thought the story could be true. （可能性） could用來(lái)提問(wèn), 是有禮貌的請(qǐng)求 Could. Please? 語(yǔ)氣較為婉轉(zhuǎn)。 Could I speak to Mr. Smith, please?,二. might和may的區(qū)別和用法: 1. may的用法: a. 表示”允許”或”請(qǐng)求”。 May I come in？ 在使用這一用法時(shí)需注意: may表示“允許”的否定形式是must not, 意思是“不應(yīng)該、不許可”。 May I

6、 take this book out of the reading room? No, you mustnt.,b. 表示說(shuō)話人的猜測(cè)，認(rèn)為某一事情“或許”或“可能”發(fā)生。 He may know the answer. c. may用在感嘆句中可表示祝愿、愿望。 May you succeed. 祝你成功。 May you have a pleasant journey. 一路平安。,2. might的用法: a. might可以代替may, 表示現(xiàn)在時(shí)間的動(dòng)作，但語(yǔ)氣較為婉轉(zhuǎn)客氣或更加不肯定。 Might I offer a suggestion？ b. might用來(lái)表示現(xiàn)在時(shí)間時(shí),

7、還可表示”規(guī)勸”。 You might pay more attention to spoken English.,三. must與have to的區(qū)別 have to比較強(qiáng)調(diào)客觀需要, must著重說(shuō)明主觀看法，另外have to能用于更多時(shí)態(tài)。比較下面的句子： My brother was seriously ill, so I had to call the doctor in the middle of the night. (客觀上需要做這件事) He said that they must work hard. （主觀上要做這件事）,有時(shí)兩者都可以用, 意思差別不大。 We mus

8、t / have to leave now. must在表示說(shuō)話人對(duì)事物的推測(cè)時(shí)，它比may肯定得多, 相當(dāng)于漢語(yǔ)的“一定”或“準(zhǔn)是”。(只有在肯定句中能這樣用。) This must be your room.,在回答由must引起的問(wèn)題時(shí), 如果是否定的答復(fù)，不能用mustnt, 而需要用neednt或dont have to, 因?yàn)閙ustnt是“一定不要”的意思，表示禁止。 - Must I hand in my homework now? - No, you neednt.,情態(tài)動(dòng)詞表示推測(cè)可以分為以下幾種情況: 情態(tài)動(dòng)詞+ do此結(jié)構(gòu)表示對(duì)現(xiàn)在或?qū)?lái)情況的推測(cè)和判斷 Do you

9、know where she is now? I think she might travel in Beijing. 情態(tài)動(dòng)詞+ be doing此結(jié)構(gòu)表示對(duì)現(xiàn)在或?qū)?lái)正在進(jìn)行的情況的推測(cè)和判斷。 At this moment, my father cant be working in the office.,情態(tài)動(dòng)詞+ have done此結(jié)構(gòu)表示對(duì)過(guò)去情況的推測(cè)和判斷。 The road is wet. It must have rained last night. 情態(tài)動(dòng)詞+ have been doing此結(jié)構(gòu)表示對(duì)過(guò)去正在進(jìn)行的情況的推測(cè)和判斷。 Your mother must

10、have been looking for you at that moment.,根據(jù)句意, 從方框中選擇正確的情態(tài)動(dòng)詞填空, 每項(xiàng)限用一次。 should, must, cant, may not, mustnt 1. That _ be Lucy. She has gone to Beijing on business. 2. There _ be something wrong with my watch. It isnt working now.,cant,must,3. He _ know the answer, either. Lets ask that policeman. 4

11、. You _ swim in the river. Its dangerous. 5. You _ look after your parents when they become older. Its your duty.,may not,mustnt,should,用must, might, could或cant 填空 The toy car _ be Jims. He is the only kid at the picnic. 2. This Mp5 _ be Lindas. I know she has one. 3. The mobile phone _ belong to Lu

12、cy or Lily. They both have mobile phones. 4. The man _ be Mr Smith. He has gone to Shanghai and hell be back in three days.,must,could / might,could / might,cant,4a Choose the best way to complete each sentence using the words in brackets. The keys:,might be,could be,could be,can be,could be,A: Many

13、 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 cant _.,4b Complete these responses.,might be,could be,could be,could be,L

14、ook at the two rooms below. Make guesses about the owner of each room.,【浙江湖州】 Whos singing in the next room? It _ be her. She has gone to New York. A. cant B. must C. shouldnt D. can 【解析】考查情態(tài)動(dòng)詞表推測(cè)。表示否定推測(cè)時(shí)，用cant，意為“一定不”。must表示推測(cè)時(shí)，意為“一定”，用于肯定句；根據(jù)答語(yǔ)“她已經(jīng)去了紐約”可知是否定推測(cè)，故選A。,中考鏈接,【2011湖北黃岡】41. Whose T - shi

15、rt is this? It _ be John s. Its _ small for him. A. cant; much too B. cant; too much C. mustnt; much too D. mustnt; too much 【解析】情態(tài)動(dòng)詞的用法。根據(jù)句意“它不可能是約翰的，對(duì)他來(lái)說(shuō)太小了?！惫逝懦鼵、D，too much為“太多”的意思，much too為“太”。故選A。,【2013天津】 Where are you going this month? We_ go to Xiamen, but were not sure. A. neednt B. must C.

16、 might D. mustnt 【解析】 neednt (不必)表建議； must (一定)表猜測(cè)的可能性很大； might (可能，也許)表不是很肯定的猜測(cè)。 mustnt(不允許)表命令。句意：-這個(gè)月你們將去哪？-我們或許去廈門，但還不確定。,C,【2013福建泉州】- Have you decided where to go for your summer vacation? - Not yet. We _ go to Qingdao. Its a good place for vacation. A. may B. need C. must 【解析】句意：- 你已經(jīng)決定到哪里過(guò)暑假

17、了嗎？- 還沒(méi)有呢，我們也許去青島，那是個(gè)度假的好地方。情態(tài)動(dòng)詞表示推測(cè)時(shí)，may表“可能”，must表“一定”，cant表“不可能”。,A,【2014銅仁】 Must I water the flowers now, mum? No, you _. You _ do it later. A. mustnt; must B. mustnt; may C. neednt; may D. neednt; must 【2014連云港】 _ I know by what time you want the project to be done? By the day after tomorrow. _ you finish it on time? A. May;