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英语语法 高级

虚拟语气与条件句

假设与反事实。

语法讲解
真实条件:If + 一般现在, will + 动词原形。虚拟(与现在事实相反):If + 过去式, would + 动词原形。注意 be 在虚拟中常用 were。
例句
If it rains, we will stay home.
如果下雨,我们就待在家。
If I were you, I would rest.
如果我是你,我会休息。
If I had known, I would have told you.
如果我知道,就告诉你了。
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