for one 请问：I for one am curious to know exactly where you he

意思是“for one thing”（“就一件事”、“就问一句”等等）.说话人或许想到很多,但只想提一件事,于是用了 for one.
for one 在句中是副词性的介词短语,作状语.此句话也可说成：
For one,I am curious to know exactly where you heard this.
I am curious,for one,to know exactly where you heard this.
I am curious to know exactly where you heard this,for one (thing).

我们用短语 for one 来表示 “个人（认为） “，”个人（觉得）“

略等于 speaking for myself

比如：The rest of you may disagree, but I, for one, think we should proceed with the plan.

尽管大家可能不同意，但”鄙见“是我们必须按计划执行

I for one am curious to know exactly where you heard this.

我个人很好奇，到底你是哪里听到这个。

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参考：剑桥网页词典

我是加拿大人，英语是我第一语言。

我作为一个人