初中应该掌握的虚拟语气要点
虚拟语气是高中语法的重难点,用来表示说话人的主观愿望或假想,所说的是一个条件,与事实相反,通过谓语动词的特殊形式来表示.那么我们在初中阶段也应该简单了解一下虚拟语气最基本的用法,从而为高中的学习打好基础。
下表是虚拟语气最重要也是最基础的一个表，以后我们要学到的各种不同情况下的变式都与这张表有联系，同学们务必背熟，牢记在心里，这样我们才能在考试中针对不同条件做出正确的解答，不至于混淆。
1． 表示与现在事实相反时的谓语形式。
从句 主句
过去式 (be和were) would (should、could might) 动词原形
例如：If I were in your position, I would call the police immediately.
如果我处在你的位置，我会立即打电话给警察。（事实上他现在并没有处在对方的位置）
2． 表示与过去事实相反的谓语形式。
从句 主句
had 过去分词 would (should、could might have 过去分词
例如：If I had left a little earlier, I would have caught the early bus.
如果我早点离开，我就能赶上那辆早班车。（事实上他过去并没有能早点离开）
3． 表示与将来事实相反的谓语形式。
从句 主句
动词过去式
should 动词原形 would (should、could might) 动词原形
were to 动词原形
例如：If they came tomorrow, we would tell them about it. teacheray.com
如果他们明天来，我会告诉他们这件事。（事实上他们明天不能来）
If I should have time tomorrow, I would certainly help you.
如果我明天有空，我肯定会帮助你。（事实上他明天没有空）
虚拟语气的倒装：（把if 去掉，主语谓语调换位置即可）
例：Should it rain, the crops would grow better. (与将来的事实相反)
（原句：If it should rain, the crops would grow better.）
如果天下雨的话，庄稼会长得更好。
Were I your father, I would not give you the money.(与现在的事实相反)
（原句：If I were your father, I would not give you the money.）
如果我是你父亲的话，我就不会给你那钱了。
Had I left a little earlier, I would have caught the early bus.(与过去的事实相反)
（原句：If I had left a little earlier, I would have caught the early bus.）
如果我早点离开，我就能赶上那辆早班车。
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