TPO18 第二篇yawning的第一段最后一句话的分析,谢谢

lightlalaUID: 3106588

About the closest any research has come to supporting the tiredness theory is to
confirm that adults yawn more often on weekdays than at weekends, and that school
children yawn more frequently in their first year at primary school than they do in
kindergarten.

主句是 any research is to confirm ... 吧
has come to supporting ... 是 research的定语从句
也就是说 research (which) has come to , which 省略了
不过这个which能省吗, 读起来怪怪的

我分析的对吗?谢谢

Yao.CUID: 3424954

不要太在意分析语法成分。
the closest any research has come to supporting the tiredness theory 看做主从（其实就是主语）is confirm that +（········从句）。
至于你纠结的 which 我觉得 有没有 都一样的。你通读下

hj1313UID: 3476105

我感觉前面这个从句是不能加which的