The practice that can help you past your learned bad habits of trying to edit as you write is what Elbow calls "free writing." (07.6 Passage 2)

主干：The practice...is what...

定语从句that can...修饰主语The practice,从句中的介词短语 past your...habits作宾语you的补语，as you write引导的时间状语从句修饰trying to edite。what引导的表语从句中用了“call+宾语+补语”的结构，what是宾语，free writing是补语。

译文：这种可以帮助你克服在写作的同时就试图编辑的坏习惯的做法便是Elbow所称作的“自由式”写作。

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引导非限制性定语从句，As指代主句所说的内容，在从句中作seen的宾语。

2. 主句中破折号后的内容是短语介词in terms of引导的介词短语作状语，表示“从......方面来说”，changing与前面的shifting构成语义再现。

译文：正如我们所看到的一样，我们社会医疗的重心正在从治疗疾病转到预防疾病上来---特别是要改变我们许多不健康的行为，比如说不良的饮食习惯、抽烟、忽视锻炼。