初二英语unit6导学案(B5纸).doc

Unit 6 How long have you been collecting shell ?(1) 项目 预习案 探究案 训练案 总体评价 评价方式 小组评价 小组评价 教师评价 小组评价 教师评价 等级 使用说明与学法指导： 1．学生个人课前以预习案内容为主，朗读并记忆四会单词的意义及用法。 2．找出本节课要学到的有关短语、难句，两人英汉互译合作记忆。 3．探究案以两人或小组合作学习为主解决，有争议或无法确定的内容教师辅助解决。 4．训练案当堂完成，学生分层次进行对改展示，教师适当进行点拨和指导。 5．我的收获由学生和教师分别完成，对本节课做简要总结，以利改进和提高。 【学习目标】1. Knowing the new words and expressions. 2. To learn to talk about how long you have been doing things 3. To learn to use present perfect progressive 【重点难点】 重点：Words and expression in this period. 难点：区别1.“for” and“since” 2.“How long have you been skating?” And “ How long did you skate?” 【预习案】 1. Read and recite the wards from page 44 to 45of the vocabulary. 2. Read SB Page 44,1a,1c.,2a, find out the following phases ,turn them into Chinese. skate for four hours, start skating, start at nine o’clock in the morning, stop at one o’clock in the afternoon, get your first pair of skates, since I was seven years old, first skating marathon, 3. Read SB Page 99, finish the following questions. 现在完成进行时：表示从＿＿ 某一时间开始一直延续到＿＿ 的动作。 现在完成进行式结构：have / has +_____ + _____ 【探究案】 研讨现在完成进行时态的用法、谓语动词构成及for和since的用法区别.(参考课本99页相关内容) 1．I have been writing the letter since then.从那时起我一直在写这封信。（动作从过去一直持续到现在还在继续） 2．I have been collecting stamps for ten years.自从10年前我就收集邮票了（动作从过去一直现在还在收集）。 3． How long have you been living here?你在这儿已经住了多长时间了。（“居住”动作从过去一直现在还在继续） 【用法透析】 since和for都可用于含有现在完成时或现在完成进行时的句子。since可作介词，后接 时间点，也可作连词，后面接从句。而for为介词，后面接时间段。如： Mr Smith has been living in Beijing for five years. Mr Smith has been living in Beijing since five years ago. 【拓展链接】 对“since + 时间点”、“since + 从句”或“for +时间段”进行提问时，用how long，句中的谓语动词用延续性动词。如： –– How long have you been collecting shells? –– For ten years. / Since ten years ago. / 【训练案】 Fill in the blanks with the correct words. 1. ____(How long / How far) has your brother been playing tennis? 2. Liz has been studying medicine _____(since / for) three years. 3. Henry has been writing _______ (since / for)