(2017年英语二Text 2)She found that mothers who used devices during that exercise started 20 per cent fewer verbal and 39 per cent fewer nonverbal interactions with their children.
本句的主干为She found +宾语从句,宾语从句从mothers开始至句尾结束。宾语从句的主干为mothers started 20 per cent fewer verbal and 39 per cent fewer nonverbal interactions with their children;宾语从句中包含定语从句who used devices during that exercise修饰先行词mothers。
参考译文:她发现,在实验期间,使用设备的母亲与孩子进行的语言交流减少百分之二十,进行的非语言交流减少百分之三十九。