虚拟语气If I were U都说If I都说If I were U 是对现在的假设,那么他可以表示对过去的假设吗?例：If I were U,I would have stopped that guy.如果我是你（表示对过去某一时刻的假设）,我就会阻止他了.
问题描述：
虚拟语气If I were U
都说If I都说If I were U 是对现在的假设,那么他可以表示对过去的假设吗?
例：
If I were U,I would have stopped that guy.
如果我是你（表示对过去某一时刻的假设）,我就会阻止他了.
答
If I were U,I would have stopped that guy.如果我是你（表示对过去某一时刻的假设）,我就会阻止他了.
这种情况是可以的.并且一般都是用 I were U.很少用i had been u.
因为这是常态.