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Unit 8 It must belong to Carla第三课时Section A（Grammar focus 4c）I. 知识目标类别课时要点重点单词1.laboratory n.实验室；2. coat n. 外套，外衣；3.sleepy adj. 困倦的，瞌睡的；重点词组1. in the laboratory 在实验室2. wear glasses 戴眼镜 3. take a shower 淋浴 4feel sleepy 感到困倦 重点句式1. -Whose band is this? -It could be Meis hair band, or it might belong to Linda. They both have long hair. 这是谁的发带？ -它可能是梅的发带，也可能属于琳达的。她们俩都有长头发。2. -What did you see that night? -Im not sure. But it cant be a dog. It was bigger. I think it might be a bear or a wolf.-你那晚看到了什么？ -我不确定，但它不可能是只狗，它要更大，我想它可能是只熊或狼。3. -Where is Jean? -Im not sure. She might be in the laboratory.-简在哪儿？ -我不知道。她可能在实验室。4. -Every one is going to the pool after school.-Really? It must be hot outdoor.-大家放学后都将去游泳池。 -真的吗？室外一定很热。5. -Thats the phone. -I wonder who it could be.-电话想了。-我想知道会是谁。6. -I wonder if these are Jims glasses. -They cant be his. He doesnt wear glasses. -我相知道这是否是吉姆的眼镜。 -他们不可能是他的，他从不戴眼镜。II. 课堂环节自主学习方案【新词自查】根据句意及首字母提示完成单词。1. I feel sleepy in class today because I stayed up late watching the football match last night.2. We have three chemistry laboratories in our school.3. Dr. Brown is leaving for Beijing to attend an important meeting.4. The policemen search the room carefully and tried to find some valuable information.5. The machine is making too much noise. Could you please turn it off?课堂导学方案Step 1情景导入（参考案例）上课前，教师可以要求学生准备一些他们亲戚或者同班学生的一些照片，然后上课时，要求学生去猜他们都是谁。教师可以邀请2名学生在讲台上利用下面的对话进行猜测。A: Who is he/ she?B: He/ She cant be _, because _. / He/ she could/ might be _, because _. / He/ She must be _, because _.环节说明：这一环节的设置主要是继续巩固前面所学的情态动词表推测的用法，同时为下面继续学习这一用法奠定基础。Step 2. 畅通Grammar Focus回顾语法重点.要求学生分角色问答并翻译表格中的句子。出说情态动词表推测的用法。并能造出相仿的句子。Step 3完成教材4a-4c的任务1. 要求学生翻开课本P60，选择4a所给句子中括号所给单词的最佳形式完成对话。.给出5分钟的时限，然后请5组同学朗读对话，全班集体核对答案。（5分钟）1.might be 2. must be 3. could be 4. cant be 5. must be2.根据提示，完成4b所给对话的答语。给出5分钟的时限，并请另个4位同学朗读所写的对话，全班集体核对答案。3.引导学生观察 4c的图片，让学生们猜测这是男孩的还是女孩的房间？并用4c方框中所给的对话进行讨论。A: It could be a girls room because its very tidy.B: I guess so. But it might be a boys room because the clothes look like boys clothes4. 小结训练。要求学生在规定的时间内完成一个小练习。并请若干学生给出自己的答案。有错误的话及时解决纠正。（2分钟）用must, might, could, cant 完成对话。A: Tom, you look worried. Whats the matter?B: I cant find the key to my bike. I might have lost it.A: Dont worry. Lets see where it could be.B: I think I might drop it during the P.E lesson. So it might still be on the playground.A: Whats your key like?B: Its yellow.A: Look! Is it yours?B: No. it cant be mine. Its small but mine is a big one.A: Im afraid you have to go to the Lost and Found to have a look.环节说明：将听、说、读、写的任务结合起来不仅锻炼了学生的语言综合运用能力，还巩固了学生对目标语言的学习、识记和运用。当堂评价方案（详见当堂训练部分）
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