1、仪征市第三中学英语学科教案总 课 题 8B Unit 3 Online tours 总课时 8 第 4 课时课 题 Grammar 课型 New教学目标To understand the differences between the simple past tense and the present perfect tense.2. To grasp the expressions with the present perfect tense.3. To grasp the expressions with the simple past tense.4. To understand dif
2、ferent uses of the present perfect tense.教学重难点 To know the differences between the simple past tense and the present perfect tense.学法指导 情景教学法,归纳法. 教具准备来源:gkstk.Com 课件教学步骤 二次备课Step 1 Revision1. Revise the text.2. Revise the difficult points.Step 2 Grammar explanation来源:gkstk.ComTell the students the
3、difference between the simple past tense and the present perfect tense.We use the simple past tense to tell what happened in the past.We use the present perfect tense to tell how many times an action has happened till now.Step 3 Notice1.We often use these time expressions with the present perfect te
4、nse:already up to now ever until/till now just so far recently (not) yet2.some day 和 the other day 的区别：the other day 相当于 a few days ago,意为“几天前、某天、那天、不久前”，句中用一般过去时。 Step 4 Summary 1) 一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。2) 一般过去时常与具体的时间状语连用，而现在完成时通常与模糊的时间状语连用，或无时间状语。一般过去时的时
5、间状语：yesterday, last week，ago, in1980, in October, just, now等，皆为具体的时间状语。现在完成时的时间状语：for, since, so far, ever, never, just, yet, till/until, up to now, in past years, always等，皆不确定的时间状语。来源:学优高考网 gkstk共同的时间状语：this morning, tonight, this April, now, already, recently, lately 等。3) 现在完成时可表示持续到现在的动作或状态，动词一般是
6、延续性的，如 live, teach, learn, work, study, know。一般过去时常用的非持续性动词有 come, go, leave, start, die, finish, become, get married等。句子中如有过去时的时间副词（如 yesterday, last, week, in 1960）时，不能使用现在完成时，要用过去时。（错）Tom has written a letter to his parents last night.（对）Tom wrote a letter to his parents last night. Step 8 HomeworkFinish off the exercises in workbook.作业设计 1 完成课课练上本课时的作业2. 复习巩固现在完成时的用法 教学反思来源:学优高考网 gkstk来源:学优高考网
