彭雪梅For和since在现在完成时的应用--知识讲解
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4.Mr Green has worked here __s_in__ce_ he came to China.
5.His grandparents have been dead _f_o_r___ several years.
上一页
主菜单
下一页
思考
• 我买这本书三年了。
I have bought this book for 3 years.
• 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.
He has stayed here since 5 o’clock yesterday.
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.
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/come→be get to know→know
• 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”。
close--be closed
reach--be (in/at) buy-- have
open--be open return-- be back
borrow-- keep finish-- be over
marry--bLeabharlann Baidu married become--be
Exercise
• 我买这辆自行车还不到一年。
• A: The film _______ for a long time。 • B: I agree with you. We can be happy to
enjoy the rest part, so we don’t need to hurry up. • A. has been on • B. didn’t begin • C. has begun • D. hasn’t begun
I haven’t had the bike for a year. √
I haven’t 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.
彭雪梅For和since在现在完成时 的应用--
区别点时间和段时间
• 5:30
点时间
• 5 years
段时间
• 3 minutes
段时间
• 2002
点时间
• May 5
点时间
• 2 months
段时间
since , for 的用法:
since: (自…以来)
Take notes
1)since+过去的时间点
• A. has begun; comes into • B. has been on; 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，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。
leave--be away (from) join-- be in/be a/an…
come/go (to) b--e (in/at) start/begin--be on
arrive (at/in)-b- e (in/at) die-- be dead
get (to)-- be (in/at)
x
I have bought this book since 3 years ago. 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 “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。
for: (长达）
for+ 时间段 He has kept the book for 2 weeks.
选用 for和 since填空:
1.We haven’t seen each other __f_o_r __ a long time.
2.His father has been in the Party __s_in_c_e_ 10 years ago. 3.The film has been on _f_o_r___ 20 minutes.
5.His grandparents have been dead _f_o_r___ several years.
上一页
主菜单
下一页
思考
• 我买这本书三年了。
I have bought this book for 3 years.
• 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.
He has stayed here since 5 o’clock yesterday.
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.
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/come→be get to know→know
• 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”。
close--be closed
reach--be (in/at) buy-- have
open--be open return-- be back
borrow-- keep finish-- be over
marry--bLeabharlann Baidu married become--be
Exercise
• 我买这辆自行车还不到一年。
• A: The film _______ for a long time。 • B: I agree with you. We can be happy to
enjoy the rest part, so we don’t need to hurry up. • A. has been on • B. didn’t begin • C. has begun • D. hasn’t begun
I haven’t had the bike for a year. √
I haven’t 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.
彭雪梅For和since在现在完成时 的应用--
区别点时间和段时间
• 5:30
点时间
• 5 years
段时间
• 3 minutes
段时间
• 2002
点时间
• May 5
点时间
• 2 months
段时间
since , for 的用法:
since: (自…以来)
Take notes
1)since+过去的时间点
• A. has begun; comes into • B. has been on; 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，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。
leave--be away (from) join-- be in/be a/an…
come/go (to) b--e (in/at) start/begin--be on
arrive (at/in)-b- e (in/at) die-- be dead
get (to)-- be (in/at)
x
I have bought this book since 3 years ago. 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 “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。
for: (长达）
for+ 时间段 He has kept the book for 2 weeks.
选用 for和 since填空:
1.We haven’t seen each other __f_o_r __ a long time.
2.His father has been in the Party __s_in_c_e_ 10 years ago. 3.The film has been on _f_o_r___ 20 minutes.