2021.7.29｜考研英语-每日一句长难句212

每日一句

However, it has been found that even people insensitive to a certain smell at first can suddenly become sensitive to it when exposed to it often enough.

词汇突破

insensitive[ n sens t v]

adj. （对他人的感受）未意识到的，漠不关心的；（对变化）懵然不知的，麻木不仁的；（对某事物）无感觉，无反应

结构分析

本句的主干是 it has been found ...，that 引导主语从句。However 位于句首，表转折。在 that 主语从句中，when 引导的是时间状语从句，另外，insensitive to a certain smell at first 是定语修饰 people。