还真没听说过这一项“规定”.其实,用什么引导词在乎你想表达什么.这个 very 的使用实际上是起一个强调的作用.其意思是“particularly suitable or appropriate”、“precisely as stated”、“true”等等.后面接一个定语从句是语义上的需要——你得说明为什么你用 very.引导词有时是可以省略的.其它例子:
This is the very book you need to read before you take the class.
I like John.He is the very teacher who keeps Chinese students interested in learning English.
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