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1、Unit 8 It must belong to Carla.,Section A 3 Grammar Focus-4c,Revision,一、按要求写出下列词汇或词组。,1. 太而不能 _ 2. 不知道 _ 3. 曾经，过去常常 _ 4. 看见某人正在做某事 _ 5. 奇怪的噪音 _ 6. 感到不安 _ 7. 离开 _,too. to.,have no idea,used to,see sb doing,feel uneasy,strange noises,go away,8. 它太大了而不可能是狗. _ 9. 这个地区的一个妇女看到有东西在逃跑。 _ _ 10. 我猜它不可能是狗。 _ _
2、,It was too big to be a dog.,A woman in this area saw something running away.,I guess it cant be a dog.,Grammar Focus,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 Carlas,Fill in the blanks.,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
3、_ be Meis hair band. Or it _ belong to Linda. They _ have long hair.,could,might,both,Whose hair band,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。 Im _ _, but it _ _ a dog. It was bigger. I think it _ _ a bear or a wolf.,What,not sure,cant be,might be,Grammar: 情态动词表推测,一定: 可
4、能： 不可能：,must,could/ may/ might,cant,现在,正在,过去,must+动词原形,must+be+doing,Must+have+done,4a,Choose the best way to complete each sentence using the words in brackets.,1. A: Wheres Jean? B: Im not sure. She _ (is/ might be/ must be) in the laboratory.,might be,n. 实验室,2. A: Everyone is going to the pool af
5、ter school. B: Really? It _ (must be / cant be /could be ) hot outdoors.,must be,瞬间动词用现在进行时态表将来，例如：go去，come来，leave离开，arrive到达，return 回来，fly 飞。,e.g. I am coming.=I will come. He is leaving for Paris.=He will leave for Paris.,adv. 在户外，在野外,3. A: Thats the phone. B: Hmm. I wonder who it _ (must be / cou
6、ld be / should be).,could be,4. A: I wonder if these are Jims glasses. B: They _ (cant be / might be / could be) his. He doesnt wear glasses.,cant be,wonder v. “想知道” (want to know) No wonder+句子，“难怪.” e.g. No wonder you are angry. 难怪你觉得生气。,5. A: I hear water running in the bathroom. B: It _ (could be
7、 / must be / cant be) Carla. She was thinking of taking a shower.,could be/ must be,think of 想要；打算 e.g. I thought of playing basketball. 我想打篮球。,1. Excuse me. Is this the right way to the Summer Palace? Sorry, I am not sure. It _ be. A. might B. will C. must D. can,Choose the correct answer.,2. Isnt
8、that Anns husband over there? No, it _ be him Im sure he doesnt wear glasses. A. cant B. must not C. wont D. may not,3. You _ be tired youve only been working for an hour. A. must not B. wont C. cant D. may not,Can、may、must用法总结,情态动词共有的特点： 一、情态动词后接_ 二、情态动词没有_ 三、变否定句：_ 变一般疑问句：_,动词原型,情态动词后加not,第三人称单数变化
9、,情态动词提到句首,二、常见情态动词用法,【温馨提示】 (1)情态动词的过去式表示比原形更 语气。 (2)mustnt表示否定意义“禁止，不允许”。可翻译成“ ”可与祈使句互换。例如： You mustnt play football in the street. 你不准在街道上踢足球。,委婉的,千万不要,（=Dont play football in the street. ),2. have to (2)must强调说话人的主观看法，意为“ ”； (3)否定形式的不同：mustnt表示“禁止；不应该”；dont have to表示“ ”，相当于neednt。,不得不,必须；应该,不必,例如
10、： The boy had to stay at home alone because his parents both went to work. 那个男孩不得不独自待在家里，因为他的父母都去上班了。 We must go to school on time. 我们必须按时上学。 You dont have to (neednt) lend me your car because young people mustnt drive. 你不需要把你的车借给我，因为年轻人不能开车。,(4)May. . . ? 句式的否定回答：No, . . . _. Must. . . ? 句式的否定回答：No
11、, . . . _. May I smoke here? 我可以在这儿吸烟吗？ No, you mustnt. 不，你不可以。 Must I go now? 我必须现在走吗？ No, you neednt. 不，你没必要。 (5)Could(表示语气委婉)?句式回答： sure/Yes, _; sorry/No,_,mustnt/cant,neednt/dont have to,cant,can,1. （2016 大连改编）We need clean air and water, so we _ protect the environment. A. canB. mayC. must C【解析
12、】句意为：我们需要清洁的空气和水，因此我们_保护环境。can能，能够；may可以，可能；must必须，一定。根据前半句可知此处指我们必须保护环境。故选 C。,返 回,2. （2016 铜仁改编）Is that boy Tom? It _ be him. He has gone to his hometown to visit his grandparents. A. can B. cant C. mustnt B【解析】句意为“那个男孩是汤姆吗？”“_是他。他已经回家乡看望他的祖父母了。”can 可能，可以；cant 不可能；mustnt 禁止。根据“他已经去家乡看望他的祖父母了”可知，不可能
13、是汤姆。故选 B。,3. （2016 威海）Must I wait here all morning? I have a lot of work to do. No, you _. You may be back in the afternoon. A. mustnt B. cant C. dont have to C【解析】句意“我必须在这儿等一早上吗？我有许多工作要做。”“不，你_。你可以下午回来。”mustnt 禁止；cant 不可以；dont have to 不必。以must提问的一般疑问句，其否定答语常用“No, you neednt.”或“No, you dont have to.
14、”。故选 C。,4. （2016 哈尔滨）Hi, Jack! Could you come to our English party? Sorry, I _. I have to look after my little sister at home. A. must B. could C. cant C【解析】句意“你好，杰克！你可以来我们的英语聚会吗？”“对不起，我_。我必须在家照顾我的妹妹。must 一定，必须；could 可以，能；cant 不能。由“必须在家照顾我的妹妹”可知不能去。故选 C。,5. （2016 苏州改编）What does Justin Biebers song Never Say Never impress you most? It tells us that we _ do almost anything if we never give up. A. can B. have to C. should A【解析】句意“贾斯汀比伯的歌Never Say Never使你印象最深的是什么？”“它告诉我们如果我们从不放弃，我们几乎_做任何事。”can能够，表示个
