小学六年级英语语法讲解之比较since和for
英语的应用越来越广泛了,我们必须好好来学习英语知识。对此小学频道编辑为大家整理了小学六年级英语语法讲解:比较since和for。详情如下:
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 aclinic since 1949.
Some new oil fields have beeno pened up since1976.
I have known XiaoLi since she was a little girl.
My brother has been in the Youth League for two years.
Ihavenotheardfrommyuncleforalongtime.
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.
希望大家能够认真阅读这篇小学六年级英语语法讲解:比较since和for,以便在英语学习上取得优异的成绩。
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