As we have seen, the focus of medical care in our society has been shifting from curing disease to preventing disease-especially in terms of changing our many unhealthy behaviors, such as poor eating habits, smoking, and failure to exercise. (06.12 Passage 2)

主干：the focus has been shifting

1. 句首As引導非限制性定語從句，As指代主句所說的內(nèi)容，在從句中作seen的賓語。

2. 主句中破折號后的內(nèi)容是短語介詞in terms of引導的介詞短語作狀語，表示“從......方面來說”，changing與前面的shifting構成語義再現(xiàn)。

譯文：正如我們所看到的一樣，我們社會醫(yī)療的重心正在從治療疾病轉到預防疾病上來---特別是要改變我們許多不健康的行為，比如說不良的飲食習慣、抽煙、忽視鍛煉。

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