1. Thirty-one-year-old Vince Bozman of Chicago has been out to his close friends since college, but remained closeted while rising through the ranks at Starbucks' corporate headquarters.
本句是由but连接的两个并列的简单句。第二个句子中，省略了主语，而while rising through...headquarters为时间状语从句的省略形式。
语法重点：并列结构
2. "While the constant stress of monitoring themselves can take its toll, LGBT people have to balance the freedom to be themselves with their employability. "
本句是一个复合句，主句是LGBT...employability， while引导让步状语从句，意为“尽管”。
语法重点：让步状语从句
3. You do want to practice how to respond to inappropriate questions, and be prepared that some co-workers may be hurt that you didn't confide in them sooner.'
本句是一个复合句。how to...questions不定式短语作practice的宾语。第一个that引导宾语从句，作prepare的宾语。第二个that引导原因状语从句，解释说明be hurt的原因。
语法重点：不定式短语作宾语，宾语从句，原因状语从句