一条语法规则，不管如何正确，除非能懂，否则毫无用处。
A grammar rule, however true (it is), is useless unless it can be understood.
但是正如在上面有单词构成之前，语法毫无用途一样，对正确和错误的感觉毫无用途，除非当有人告诉你如何来应用它。
But just as syntax is nothing until words are built upon it, so too is a sense of right and wrong useless until someone teaches you how to apply it.
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