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(关于英语语法的问题,我们是这样认为的:语法不是万能的!而且,要想讲流利的英语,也不是一定要精通语法才行,语法千变万化,每一天都会改变,只要人民改变了说话的习惯,语法也就相应的必须改变了,语法是由人们创造的,而不是由语法家创造的!何况,以英语为母语的人,又有几个是精通语法的呢?当你问他们为什么英语要这么讲时,他们只能告诉你,“我们天生就是这么讲的,That comes naturally!”。我们真的很希望大家最后能达到那样的境界,就是把英语变成一种习惯,这才是学英语的最高境界!希望大家早日突破英语语法关!)



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16.2 非真实条件句

1)时态:可以表示过去,现在和将来的情况。它的基本特点是时态退后。
a.  同现在事实相反的假设。
句型 : 条件从句     主句
    一般过去时   should( would) +动词原形
  If they were here, they would help you.

b.  表示于过去事实相反的假设。
句型: 条件从句      主句     
   过去完成时    should(would) have+ 过去分词
  If she had worked harder, she would have succeeded.  
  The rice would not have been burnt if you had been more careful. 
  If my lawyer had been here last Saturday, he would have prevented me from going.

  If he had come yesterday, I should / would have told him about it.
  含义:He did not come yesterday, so I did not tell him about it.
  If he had not been ill and missed many classes, he would have made greater progress.
  含义: He was ill and missed many lessons, so he did not make greater progress. 

c.  表示对将来的假想
 句型:  条件从句       主句
     一般过去时      should+ 动词原形
     were+ 不定式     would + 动词原形
     should+ 动词原形
 If you succeeded, everything would be all right.
 If you should succeed, everything would be all right.
 If you were to succeed, everything would be all right.

 











 

 
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