语言就是沟通交流的工具，够用的标准很简单也很容易检验：能准确顺利沟通，基本不产生歧义就行。

【 在 smallpapaya 的大作中提到: 】
:
: “In general, the younger he is when both languages are introduced, the more proficiently he'll learn them; by contrast, he may have a little more difficulty learning the second language if he is introduced to it during the PRESCHOOL YEARS only after learning and speaking the first language exclusively."
:
: 所以呢，幼儿园都晚了。到小学再开始指望一周三四节英文课那不可能的。
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