新GRE考试：阅读难句解读22

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It was not the change in office technology，but rather the separation of secretarial work，previously seen as an apprenticeship for beginning managers，from administrative　work that in the 1880’s created a new class of "dead-end" jobs，thenceforth considered "women’s work."   
　　十九世纪八十年代，产生了新的一类“没前途”的职业，这并不是因为办公室技术发生了改变，而是由于秘书工作——在此之前被视作是初起步的经理们的一种习见训练——与行政工作的分离。自此以后，这类“没前途”的职业便被视作是“女人的工作。”
1 Q  L! H) g2 L　　难句类型：复杂修饰、插入语 来自www.Examw.com
# O* _' `$ r5 n5 N( o　　解释：这句话的结构是It was something that,,,It是形式主语，其真正的内容是was之后、that、之前的something的内容。本句的something结构复杂、长度惊人，并且包含了一个较长的插入语，把固定搭配separation from分开，造成了极大的阅读困难，其实这个句子说得简单就是It was the separation of secretarial work from administrative work that created a new class of jobs.
: X& p$ q3 }! k/ c& ~  F　　意群训练：It was not the change in office technology，but rather the separation of secretarial work，previously seen as an apprenticeship for beginning managers，from administrative work that in the 1880’s created a new class of "dead-end" jobs，thenceforth considered "women’s work."
　　注：本文难度再分不清separation … from 的搭配关系