In recent years, however, some health specialists have begun to apply the terms "well" and "wellness" only to those who are actively striving to maintain and improve their health. (06.12 Passage 2)
　　主干：some health specialists have begun to apply...
　　主句部分，不定式to apply...用作begun的宾语。apply...to...表示“把......应用于......”，句中表示“把well和wellness这样的词只用来指那些人”。who引导的定语从句修饰those。
　　译文：然而，近些年来，一些健康专家开始把“健康”和“健康状况良好”这样的字眼只使用到那些积极努力去保持并改善自身健康状况的人身上。

　　And by focusing attention on healthy ways of living, the concept of wellness can have a beneficial impact on the ways in which people face the challenges of daily life. (06.12 Passage 2)
　　主干：the concept...can have a (beneficial impact)
　　句首by引导的介词短语表示“方法、手段”。have a (beneficial impact) on...“对......有有益的影响”。in which引导定语从句修饰the ways。
　　译文：通过关注健康的生活方式，“健康”的历年就能对人们面对日常生活的挑战的方法产生有利的影响。

　　In it (the communications diary) they noted the number of conversations or email exchanges they had lasting more than 10 minutes, and confessed to how may lies they told. (06.6 Passage 1)
　　主干：they noted the number..., and confessed to how...
　　主句用了两个并列的谓语动词：noted 和confessed。or连接两个名词conversations和email exchanges构成并列结构，后面有定语从句they had和现在分词短语lasting more then 10 minutes修饰。
　　译文：在交流日记中，他们把长达10分钟以上的谈话或者电子邮件交流的次数记录下来，并且承认了他们说谎的次数。