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Unit3 Is this your pencilSection B 第4课时（2a2c）类别学习重点重点单词in, library, ask, some, find, lost, classroom, e-mail, at, call, must重点短语in the school library, Lost and Found, call sb. at重点句式1. Some keys are in Classroom 7E. 2. E-mail me at maryg2gfimail. . 3. I lost my school ID card. 4. Call me at 685-6034. 课前预习写一写1. 在里in 2. 请求；要求；询问ask3. 找到；发现find 4. 一些；某些；有些；有的some5. 教室classroom 6. 必须must译一译1. 在学校图书馆里in the school library2. 失物招领处Lost and Found3. 打某人电话call sb. at背一背1. 一些钥匙在7E教室。Some keys are in Classroom 7E. 2. 根据maryg2gfimail. 网址给我发电子邮件。E-mail me at maryg2gfimail. . 3. 我丢失了我的学生卡。I lost my school ID card. 4. 拨685-6034这个电话号码找我。Call me at 685-6034. 新课导入1. 教师告诉学生：I lost my watch. I must find it. 然后教师出示一个寻物启事。参考案例: Lost: I lost my watch. I must find it. Call me at 685-6034. Thanks. Ms. Wang2. 教师问学生，如果我拾到一个物品，怎样写招领启事呢？3. 引导学生写招领启事。Found: Some keys are in Classroom 7E. Are they yours? E-mail me ator call me at新课展示【完成教材2a2c的教学任务】1. 教学2a。让学生写出自己常丢失的物品。2. 教师让学生尝试写出寻物启事。3. 教学2b。阅读公告栏启事，圈出丢失的物品。4. 再读公告，找出难以理解的句子让教师讲解。5. 读公告完成下列练习。（1）Please call Mr. King at 557-5881. （2）Is that your ID card in the Lost and Found case? （3）Is this your watch? No, it isnt . 6. 学生熟读2b的公告启事，并找2-3个学生口头拟出Lost或Found。7. 教学2c。读公告启事，写出丢失的物品，并在Lost或Found下打勾。【语法提要】1. Ask teacher for it. 新课展示这是一个祈使句。ask此处为及物动词，意为“请求；要求”。其常用短语ask sb. for sth. 意为“向某人索取某物；向某人要某物”；ask for意为“寻求，要求”；ask sb. for help意为“向某人请求帮助”；ask sb. (not) to do sth. 意为“让某人（不）做某事。”例句：You can ask her for the book. 你可以找她要那本书。We can ask for help. 我们可以请求帮助。I ask her not to do it. 我叫她不要做这件事。拓展：ask还可意为“询问；问”。例句: May I ask you a question? 我可以问你个问题吗？2. somesome意为“一些；某些”，后接可数名词的复数形式或不可数名词。一般用于肯定句中。注意：当疑问句表示建议或请求，并希望对方给予肯定答复时，要用some。例句: I have some friends in my school. 在学校里我有一些朋友。 He has some rice. 他吃了一些米饭。Can I ask you for some money? 我可以向你要些钱吗？活学活练（ A ）1. This box is too heavy. I want to _ somebody for help. A. ask B. think C. call D. find（ B ）2. _ girls are in _ 3. A. A; classroom B. Some; ClassroomC. A; Classroom D. Some; classroom布置作业：教师引导学生课后完成本课时对应练习，并预习下一课时内容。教学反思本课时的主要内容是寻物或招领启事的写作。让学生多背诵一些范文有利于加深学生对文本格式的印象。教学过程中老师的疑问：教师点评和总结：
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