一、句子分析.
主語：She
謂語動詞：was
程度狀語：almost exactly ——修飾后面的表語從句
表語從句：as he had always known her
二、從句中的關聯(lián)詞 as 是代詞,充當 known her 的賓語補足語,有兩種理解法——
1、關系代詞,指代前面曾經提到過的或者后面要提到的句子,比如：
--She had not changed,as he had always known her.
--As he had always known her, she had not changed.
as 指代句子 she had not changed 因此從句可以改寫為：
—— he had always known her that she had not changed.
2、連接代詞：在脫離上下文 的情況下,as 也可以理解為指代 the same manner（老樣子）或 the same way（一樣的方式）.因此問題中的這個句子也可以改寫為：
—— She was almost exactly the same manne/way that he had always known her.