现在完成时和现在完成进行时的区别.ppt
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1、Grammar and usagePresent perfect tense & present perfect continuous tense The monitor has changed his seat, so I cant find him. I have found him with your help. I feel very happy.Form: Have/ has + donePresent perfect tenseMrs. Fang has changed the color of her nails (指甲指甲). 1. To talk about things t
2、hat happened in the recent past but are connected with the present. 总结:表示过去的动作对现在的影响总结:表示过去的动作对现在的影响分析:过去的动作:分析:过去的动作:got a new pair of glasses 对现在的影响:对现在的影响: see more clearly. Usage 1 常跟常跟already, yet等连用等连用 Mrs. Fang has got a new pair of glasses. She can see more clearly now. Watch and think Usage
3、 2 I have been to Paris twice. 2. To talk about unfinished repeated actions in a lifetime. 总结:表示反复的动作,经验总结:表示反复的动作,经验常常与与频度副词频度副词always, often, seldom, never等连用等连用I havent seen Justin since last Friday night. The police have just finished searching the area. A. We havent seen Justin since last Frida
4、y night. B. The police have just finished searching the area. 3. To talk about something that started in the past and is still happening now or was completed a short time ago. 总结:总结:过去发生的动作持续到现在过去发生的动作持续到现在。分析:分析: 动作发生在过去动作发生在过去 A 仍在发生仍在发生 B 刚刚结束刚刚结束Usage 3 常与包括现在在内的时间状语连用,如:常与包括现在在内的时间状语连用,如:today,
5、 now, this week, this morning, these days, this afternoon, recently, so far等;也同等;也同“for+时间段时间段”或或 “since时间点时间点”的状语连用的状语连用Summary 1. 表示过去的动作对现在的影响表示过去的动作对现在的影响 2. 过去发生的动作持续到现在,过去发生的动作持续到现在,可能刚刚结束,可能仍在发生可能刚刚结束,可能仍在发生 3. 表示反复的动作表示反复的动作,经验经验Present perfectPresent perfect continuous The boy started havin
6、g dinner five minutes ago. He is still having dinner now. The boy _ (have) dinner since five minutes ago. has been havingForm: Have/ has + been +doingThe man started working in the field half an hour ago. He is still working now.The man _ (work) in the field for half an hour. has been working pastfu
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