Since 用来说明动作起始时间,for用来说明动作延续时间长度。
I have lived here for more than twenty years.
I have lived here since I was born..
My aunt has worked in a clinic since 1949.
Some new oilfields have been opened up since 1976.
I have known Xiao Li since she was a little girl.
My brother has been in the Youth League for two years.
I have not heard from my uncle for a long time.
注意:并非有for 作为时间状语的句子都用现在完成时。
I worked here for more than twenty years.
(我现在已不在这里工作。)
I have worked here for many years.
(现在我仍在这里工作。)
京翰教育小窍门: 当现在完成时+一段时间,这一结构中,我们用下面的公式转化,很容易就能排除非延续动词在完成时中的误使。
1) (对) Tom has studied Russian for three years.
= Tom began to study Russian three years ago, and is still studying it now.
2) (错) Harry has got married for six years.
= Harry began to get married six years ago, and is still getting married now.
显然,第二句不对,它应改为 Harry got married six years ago. 或 Harry has been married for six years.
G类雅思小作文常用句型总结
雅思写作论据:Should Smoking Be Banned in All Public Places?
雅思写作7分句型表达参考
雅思写作:英汉表达的十大区别(下)
樊黎明:A类雅思写作分类汇总
雅思图表作文的写作思路
雅思写作句型练习:连接副词
樊黎明:雅思写作总结与备考建议
9个雅思写作必练的作文题目
雅思写作练习:经典试题集锦
雅思写作论据:Museums and Galleries
雅思议论文写作论据:Rubbish Problem
雅思写作易错词:Such as、for example
雅思写作:剑桥雅思六A类写作第二套分析
雅思写作思路指导:体育比赛的成功靠什么
雅思议论文写作论据:Carnivorous & Vegetarian
中国考生的六大雅思写作问题
雅思写作流程图范文:蚕丝制作
雅思写作论据:To Play, or to Compete?
雅思议论文写作论据:Museums and Galleries
雅思大作文常用套句与模板
雅思写作:剑桥雅思六A类写作第三套分析
雅思写作的4个语言考察点
雅思写作:剑桥雅思六A类写作第四套分析
雅思议论文写作论据:Space Research
雅思流程图范文及深度点评:巧克力的制作
雅思写作随想:雅思作文的思想
雅思写作句型练习:并列句(下)
雅思议论文写作论据:To Play, or to Compete?
雅思写作:英汉表达的十大区别(上)
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