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1、unit8 section A (1a-2d)一、预习内容:unit8 section A (1a-2d)二、预习本课时重点短语、句子:(英汉互译)1、发带、发卡_ 2、剩余的_ 3、捡起_ 4、at the picnic _5、attend a concert _ 6、属于_ 7、贵重的物品_8、它一定属于卡拉 It must _ _ Carla. 9、这是谁的书?_ book is this?10、昨天我参加音乐会了,因此它可能仍然在音乐大厅里。I attended a concert yesterday, so it _ still _ in the music hall?11、你书包里
2、有贵重的东西吗? Do you have _ _ in your schoolbag?12、我想有人一定已经捡起了它, I think somebody must have _ _ _.三、探究新知:探究(一)情态动词表示推测的用法。(名校课堂71页)1、对不同时态的推测情态动词可以表示说话的语气。本单元主要学习情态动词must,can/might表示推测的用法。表示推测时,要根据肯定、否定或疑问的不同句式选用不同的情态动词。“情态动词+do sth.”表示对现在事情的推测;“情态动词+be doing sth.”表示对正在发生的事情的推测;“情态动词+have done sth.”表示对过去
3、或已经完成事情的推测。eg:They must be in the classroom now. 他们现在一定在教室里。Peter may/might have been hurt in the car accident. 彼得可能在车祸中受了伤。2、肯定推测(1)must 用于肯定句,表示较有把握的推测,意为“准是,一定”,后面接动词原形,表示对现在的推测。eg:-Ive had no sleep for 48 hours. 我已经48个小时没睡觉了。-You must be tried. 你一定累了(2)may用在肯定句中,表示现在把握不大的推测,意为“也许,可能”。eg:Dont pla
4、y with the knife,you may cut yourself. 不要玩小刀,你可能会伤了自己。(3)could,might 也可表示推测,常用在过去时中,但在某些场合下,为了使用语气更缓和、更委婉,常用could; might代替can,may.eg:They saw something in the sky last ight. It could/might be a UFO. 昨天晚上他们看见空中有个东西。它可能是不明飞行物。You might/could be very tired. 你可能很累吧。(4)can用在肯定句中,表示理论上的可能性。eg:Smoking can
5、cause cancer. 吸烟有可能引发癌症。3、否定推测(1)表否定推测时,cant/couldnt语气最强,指“不可能”,带有惊异、怀疑的感情色彩。eg:The story sounds reasonable,but it cant be true. 这个故事听起来合情合理,但不可能是真的。(2)语气不很肯定时,常用may not或might not表否定推测,意为“可能不,也许不”。eg:He may/might not be at home. 他可能不在家。4、疑问句中的推测疑问句中的推测,常用can或could,意为“可能”。eg:Who can it be?Can it be J
6、enny? 那可能是谁呢?是珍妮吗?学以致用选用下面的情态动词填空。can,may,must,cant,may not,mustnt,could,might,couldnt,might not.1、 That red notebook _ be Wang Hongs. Look!It has her name on the first page.2、 The jeans _ be Michaelt. They are too short for him.3、 The basketball _ be Mikes. His super-star is Yao Ming.4、 The guitar
7、_ belong to Mary. She likes to play the guitar very much.5、 Oh,the red bike _ be his. His is yellow.探究(二)辨析.take part in,join与attend.观察以下例句总结take part in,join与attend的用法区别。eg:1、Did you take an active part in the sports meeting? 你积极参加运动会了吗?2、He joined the army. 他参军了。3、He didnt attend the meeting yeste
8、rday. 昨天他没有参加会议。学以致用用attend,take partin,join.填空1、 Bob often _ school activities.2、 The young girl has _ the Young Pioneers.3、 Will you _ us in the discussion.4、 A famons expert gave us a talk and many people _ the meeting.探究(三)观察以下例句,总结短语“属于”应该是_和_eg:1、That pen belongs to Tom=That pen is Toms 这只钢笔属于
9、我。2、These apple belong to me.=Those apples are mine. 这些苹果是我的。学以致用1、The red T-shirt is my mothers(同义词) The red T-shirt _ _ my mother.探究(四)valuable 含义是_是_词,名词是_,含义_。观察例句,总结valuable用于_eg:1、This dictionary is of great value.=This dictionary is very valuable. 这本词典很有用。2、Do you think the notebook is valuble to you?=Do you think the notebook is of value to you? 你认为这个笔记本对你有价值吗?