I never made a mistake in grammar but once in my life and as soon as I done it I seen it.

I never made a mistake in grammar but once in my life and as soon as I done it I seen it.

我从来没有犯过语法错误，但有一次在我的生活中，一旦我做了，我看到它。

-- Carl Sandburg 卡尔·桑德伯格