问题描述：
语法分析：I am happy to join with you today in what will .
I am happy to join with you today in what will go down in history as the greatest demonstration for freedom in the history of our nation.
请帮助分析一下句子结构,what 是指什么?as 作什么成分?
I am happy to join with you today in what will go down in history as the greatest demonstration for freedom in the history of our nation.
请帮助分析一下句子结构,what 是指什么?as 作什么成分?
问题解答：
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