九年级英语知识点英语知识树

  最好since和for

  

  Since 平常说明怎么写动作类最大值的时间,for平常说明怎么写动作类执业医师变更的时间长度。举例说明:

  

  I have lived here for more than twenty years.我住这条街二一两年了。

  

  I have lived here since I was born. 我悟出生英文起就住这条街了。

  

  准备:并不一定有for 做的时间状语的句子都用当今竣工时。

  

  I worked here for more than twenty years. (我当今如不在在这运作。)

  

  I have worked here for many years.(当今我仍在在这运作。)

  

  准备:用句型转换的发法,很非常容易排除故障非执业医师变更动词在有for/since结构的竣工时中的误用。英语学识树

  

  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 elat married six years ago, and is still elatting married now.

  

  轩然,第二句不对劲,它应转换成 Harry got married six years ago. 或 Harry has been married for six years.

  

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