比较since和for
2024-03-09 11:29:30 学考宝 作者:佚名
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 known1 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) Harry2 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.
重点词汇点拨
adj.大家知道的;知名的,已知的
参考例句:
- He is a known artist.他是一个知名的艺术家。
- He is known both as a painter and as a statesman.他是知名的画家及政治家。
vt.掠夺,蹂躏,使苦恼
参考例句:
- Today,people feel more hurried and harried.今天,人们感到更加忙碌和苦恼。
- Obama harried business by Healthcare Reform plan.奥巴马用医改掠夺了商界。