that在从句中不作成分,排除定语从句。主句不缺名词性成分,排除名词性从句。只剩下状语从句。根据逻辑分析,你是谁,你身份如何,地位有多高,以致于他把我的事都告诉你。所以that从句分析为结果状语从句。
COCA类似例句:
And who are you that I should give you a boat?
You want to know who I am. Mr. Strickland, who are you that you don't know me?
Who are you that the rules don't apply?
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