1While that may well be true, researchers have also recently found that interacting with strangers actually brings a boost in mood and feelings of belonging that we didn’t expect.
主干主语：researchers；谓语：have found；宾语：that 引导的从句（interacting with strangers brings a boost…）
结构句首 While 引导让步状语从句。主句谓语 found 后接 that 宾语从句；从句主语为动名词短语 interacting with strangers，宾语 a boost 后有 in mood and feelings of belonging 作后置修饰，末尾 that we didn’t expect 为定语从句修饰 boost 及并列的 feelings。also recently 为状语。
译文尽管这很可能没错，但研究人员近来也发现，与陌生人互动其实会带来意想不到的情绪提升和归属感。
考点While 表让步，不等于“当……时” · that we didn’t expect 修饰的是 boost/feelings，而非 strangers
2In one series of studies, researchers instructed Chicago-area commuters using public transportation to strike up a conversation with someone near them.
主干主语：researchers；谓语：instructed；宾语：Chicago-area commuters；宾补：to strike up a conversation
结构句首介词短语作地点/范围状语。instruct sb. to do 结构中，using public transportation 为现在分词短语作后置定语修饰 commuters，不是谓语。to strike up… 为不定式作宾语补足语；with someone near them 修饰 conversation。
译文在一系列研究中，研究人员让芝加哥地区乘坐公共交通的通勤者主动与身边的人攀谈。
考点using… 是定语而非伴随状语，主语仍是 researchers · instruct sb. to do：不定式作宾补
3On average, participants who followed this instruction felt better than those who had been told to stand or sit in silence.
主干主语：participants；谓语：felt；表语：better（比较结构）
结构On average 作评注性状语。主语后 who followed this instruction 为限制性定语从句。felt better than 构成比较；比较对象 those 后另有 who had been told to stand or sit in silence 定语从句，told 后不定式表被告知的内容，时态用过去完成强调先于 felt。
译文平均而言，按指示去做的参与者，感觉比那些被要求静坐或静站、保持沉默的人更好。
考点两个 who 从句分别限定两组被试，勿混为一谈 · had been told 相对 felt 的先时性
4The researchers also argued that when we shy away from casual interactions with strangers, it is often due to a misplaced anxiety that they might not want to talk to us.
主干主语：The researchers；谓语：argued；宾语：that 从句（核心为 it is due to a misplaced anxiety）
结构argued 后接 that 宾语从句。从句内 when 引导时间/条件状语从句；主句 it is due to… 中 it 为形式主语指代“回避互动”这件事。anxiety 后 that they might not want to talk to us 为同位语从句，说明焦虑的具体内容，不是定语。
译文研究人员还认为，我们之所以回避与陌生人的随意交流，往往是出于一种错位的焦虑：以为对方可能并不想和我们说话。
考点anxiety that… 是同位语从句，解释焦虑内容 · misplaced anxiety：错置/没有根据的焦虑