2018年6月大学英语四级语法:比较since和for

2018-02-13 17:53:00来源:网络

  在大学英语四级考试中,单独考察英语四级语法的题几乎没有,但是英语四级语法知识点却贯穿整张试卷,下面是新东方在线英语四级频道为大家整理的大学英语四级语法知识,希望可以为大家带来帮助。

  2018年6月大学英语四级语法大全目录

  11.12 比较since和for

  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。)

  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.

  2018年6月大学英语四级语法大全目录

英语四级必备资料下载

2018年6月英语四级词汇完整版带音标下载

英语四级必备工具:测测你的词汇量能过四级吗

测测你的词汇量能过四级吗

英语四级无忧计划立减1000元

历年考研真题及答案

扫码即刻查分 四六级最新答案

四六级好课 海量资料定期更新

更多资料
更多>>
更多内容
更多>>
更多公开课>>
更多>>
更多资料