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1、任务一 10分钟,理解并掌握since 和for 引导的现在完成时的用法. 分清since 和for 引导的时间状语结构在现在完成时中的用法.,课堂目标：,1） 学生能够理解和掌握与since和 for 连用的现在完成时态的用法。（重点） 2）学生能够区别延续性动词和非延续性动词,并知道他们之间的转换（难点）,区别点时间和段时间,5:30 5 years 3 minutes 2002 May 5 2 months,点时间,段时间,段时间,点时间,点时间,段时间,since: (自以来) 1)since+过去的时间点 He has stayed here since 5 oclock yeste
2、rday. 2)since+ 时间段+ ago He has stayed here since 5 hours ago. 3)since+ 从句（动词用过去时） She has taught English since he came here. for: (长达） for+ 时间段 He has kept the book for 2 weeks.,since , for 的用法:,Take notes,选用 for和 since填空: 1.We havent seen each other _ a long time. 2.His father has been in the Party
3、 _ 10 years ago. 3.The film has been on _ 20 minutes. 4.Mr Green has worked here _ he came to China. 5.His grandparents have been dead _ several years.,for,since,for,since,for,下一页,上一页,主菜单,思考,我买这本书三年了。,I have bought this book for 3 years.,I have bought this book since 3 years ago.,x,x,任务二 18分钟,能够区别延续
4、性动词和非延续性动词,并知道他们之间的转换,非延续性动词： 从“开始发生”到 “结束/终止”，几乎同时或在极短的时间里（如几秒钟/几分钟内）就完成了“开始结束”的过程。如：leave ,arrive ,come, go, return ,begin ,start ,die , buy, borrow, see等。 延续性动词：表能持续很长时间的某个动作或状态的动词。如：stand，teach等。 我买这本书三年了。,I have had this book for 3 years. I have had this book since 3 years ago.,短暂性动词与延续动词间的转换,非
5、延续性动词可以和延续性动词进行转换。 (1) 转化为“be+形容词/副词等”。 die be dead leave be away (from) open/close be open/closed stop be over arrive in (at)/reach/get to be in/at join be a member of/ be in start/begin be on (2) 转化为意思相同的延续性动词。 borrow keep buy have become/comebe get to knowknow,leave- come/go (to) - arrive (at/in)
6、- get (to)- reach- buy- borrow- finish-,join- start/begin- die- close- open- return- marry- become-,be away (from),be (in/at),be (in/at),be (in/at),be (in/at),have,keep,be over,be in/be a/an,be on,be dead,be closed,be open,be back,be married,be,Exercise,我买这辆自行车还不到一年。,I havent had the bike for a year
7、.,I havent bought the bike for a year.,但在否定句中，短暂性动词可以与时间段连用。,The film _ for a long time, so there is no one in the cinema. A. has begun B. has been on C. has finished D. has been over,The film _ since Mary _ the cinema, so she misses the beginning of the film. A. has begun; comes into B. has been on
8、; came into C. has finished; came into D. has been over; came into,【答案及解释】B。首先观察题中所给的4个选项，以及前半句中解题关键的“since”。我们知道第一空使用了现在完成时，而现在完成时中since引导的从句动词时态应用一般过去式，故排除A和 C。此外，现在完成时与“since从句”连用，主句的动词应为延续性动词，而题目中所给的begin和finish均为短暂性动词，不能在有“since从句”的现在完成时句子中使用。所以答案只能选择B。再根据题干所给的后半句，我们得知她错过了电影的开头部分，与B选项所要表达的意思一致，
9、故推出B为正确选项。译文：自从玛丽来到电影院，电影已经放映了，所以她错过了电影的开头部分。,A: The film _ for a long time。 B: I agree with you. We can be happy to enjoy the rest part, so we dont need to hurry up. A. has been on B. didnt begin C. has begun D. hasnt begun,【答案及解释】D。首先观察题中所给的4个选项，以及前半句中关键词“for + 一段时间”，我们知道第一空使用了现在完成时，而根据B所说的话我们得知电影
10、并没有放映很长时间，所以A所说的话应为否定句。故排除A和 C。殊不知，现在完成时的否定句中，“for + 一段时间”也可与短暂性动词连用。同理，在现在完成时的否定句中，since+过去的某一点，since+一段时间+ago，以及since引导的从句也可以与短暂性动词连用。故答案D也正确。（可以理解为这个动作在段时间中从未发生过，故完成时的否定句里短暂性动作和延续性动作都可以与for和since连用）译文：A:电影并没有开始很长时间。B:我同意你的看法。我们能够开心的看完剩余部分。我们没必要那么赶。,总结,点时间 2. 一段时间+ ago 3. 从句（过去时）,I. 翻译 ：他死了已经3年了。,
11、1.He died 3 years ago. 2.He has been dead for 3 years. 3.He has been dead since 3 years ago. 4. It is 3 years since he died. 5.Three years has passed since he died .,II. Complete the sentences, using “for“ and “since“:,1. we, study, English, (five years, 1982) We have studied English _ five years. W
12、e have studied English _ 1982. 2. he, work, in this factory, (more than ten years, 1976) He has worked in this factory _1976. He has worked in this factory _ more than ten years.,for,for,since,since,3. it, not rain, (a long time, October) It hasnt rained_ October. It hasnt rained _a long time . 4. i
13、, not play, football, (last Sunday, a week) I havent played football _ a week. I havent played football _ last Sunday. 5. I havent met her _ I arrived here.,for,for,since,since,since,III. Ask questions about the underlined parts:,1. Miss Brown has lived in China for ten years. _ has Miss Brown lived in China? 2. They have found a tortoise on the river bank. _ have they found a tortoise? 3. We have visited the factory twice. _have you visited the factory ?,How long,When,How many times,反馈目标目标：3分钟,口头反馈： 、本节课的目标是否达成？ 、在达成过程中有什么收获？ 、不足的地方有哪些？,
