【文章难句】

Even though there is plenty of evidence that the quality of the teachers is the most important variable, teachers’ unions have fought against getting rid of bad ones and promoting good ones.

【词汇打破】

promote

vt. 促进；提高；推销；发扬

vi. 成为王后或其他大于卒的子

【结构剖析】

语句的骨干是 teachers’ unions have fought against getting rid of bad ones and promoting good ones。句首 Even though 引导一 个退让状语从句，标明转机，that 引导一个同位语从句，解说阐明 evidence。

【参阅译文】

即便有很多依据标明，教师的本质是最重要的变量，教师工会仍一向对立开除差的教师，提高好的教师的做法。

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