I have never met him before中的have是什么意思,为什么没有变过去失态

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I have never met him before中的have是什么意思,为什么没有变过去失态

I have never met him before中的have是什么意思,为什么没有变过去失态
I have never met him before中的have是什么意思,为什么没有变过去失态

I have never met him before中的have是什么意思,为什么没有变过去失态
这里的have + met 是现在完成时
基本结构:主语+have/has+动词的过去分词(p.p)(V-ed) e.g done
  ①肯定句中:主语+have/has+动词的过去分词(p.p)(V-ed)+宾语.
  ②否定句中:主语+have/has+not+动词的过去分词(p.p)(V-ed)+宾语.
  ③一般疑问句中:Have/Has+主语+动词的过去分词(p.p)(V-ed)+宾语.
  ④特殊疑问句中:特殊疑问词或词组+一般疑问句(have/has+主语+过去分词(V-ed)+其他) (1)强调动作是从过去持续到现在,并有可能继续持续下去.
  (2) 强调对现在的影响或结果,此用法容易和一般过去时混淆.两者的区别是:一般过去时有动作发生的时间点,即过去某一时间发生某一动作;现在完成时则没有,即不强调是哪个时间点发生的动作,而强调过去的动作对现在造成的影响和结果.
  (3)在过去不确定的时间里发生的动作,但是结果对现在有影响.
  但过去分词一定要选择准确.
  时间状语:recently,lately,since...for...,in the past few years.etc.yet.never.ever.次数
初中就会学的~你可以先买本语法书看看 提前学习学习

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