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五官中郎将初中英语语法since和for用法讲解.doc

作者:高考题库网
来源:https://www.bjmy2z.cn/gaokao
2021-01-13 14:06
tags:初中教育

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2021年1月13日发(作者:窦智孔)
初中英语语法since和for用法讲解

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。
例如:
I have lived here for more than twenty years.我住在这儿二十多年
了。
I have lived here since I was born. 我从出生起就住在这儿了。
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。)
注意:用句型转换的方法,很容易排除非延续动词在有for/since
结构的完成时中的误用。
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.
同学们,看看since和for的用法比较,大家有没有清楚一点呀,
多多看看哦。

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