公共英语二级考试：语法讲解（3）
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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. 相关资料 |
