Question

请大家帮忙分析下着个句型~！

But celiac researcher Alessio Fasano says until recent years not much was known about the disease

Answer 1

这句话的意思是：但是腹腔研究员Alessio Fasano 说，直到近几年我们对这种疾病知道的也不多。
主语：celiac researcher Alessio Fasano
谓语动词：says
宾语从句：until recent years not much was known about the disease
在这个宾语从句中until recent years为时间状语，
not much was known about the disea为被动语态