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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,5:305 years 3 minutes2002May 52 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Hehasstayedheresince5oclock yesterday.2)since+
2、时间段+ agoHehasstayedheresince5hoursago.3)since+ 从句（动词用过去时）ShehastaughtEnglishsincehecamehere. 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 _ 10 years ago.3.The film has been
3、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
4、“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
5、 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)- get (to)-reach-buy-borrow-finish-,join-start
6、/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.,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
7、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; came into C. has finished; came into D. has been over; ca
8、me 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，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 _
9、 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 beginC. 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
10、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+ ago3. 从句（过去时）,I. 翻译 ：他死了已经3年了。,1.He died 3 years ago.2.He has been dead for 3 years.3.He has b
11、een 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.We have studied English _ 1982.2. he, work, in this factory, (more than te
12、n 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, not play, football, (last Sunday, a week)I havent played football _ a week.I
13、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？,
