1She found that mothers who used devices during the exercise started 20 per cent fewer verbal and 39 per cent fewer nonverbal interactions with their children.
主干主语：She；谓语：found；宾语：that 引导的宾语从句（从句主干：mothers started interactions）
结构主句为 She found，后接 that 宾语从句。从句中 mothers 是主语，who used devices during the exercise 是定语从句修饰 mothers；谓语 started 后接并列宾语 20 per cent fewer verbal (interactions) 和 39 per cent fewer nonverbal interactions，其中 verbal 后省略了 interactions，属并列结构中的省略现象。
译文她发现，在测试过程中使用电子设备的母亲，与孩子进行的言语互动减少了20%，非言语互动减少了39%。
考点that 宾语从句中嵌套 who 定语从句，注意先抓从句主干 mothers started interactions · 并列省略：fewer verbal 后省略 interactions，避免重复
2In it, a mother is asked to interact with her child in a normal way before putting on a blank expression and not giving them any visual social feedback: The child becomes increasingly distressed as she tries to capture her mother's attention.
主干主语：a mother；谓语：is asked（被动）；冒号后分句主语：The child；谓语：becomes；表语：distressed
结构冒号前为被动语态句，before putting on... and not giving... 是介词 before 后接两个并列动名词短语作时间状语，putting on 与 not giving 并列。冒号后分句对前文进行解释说明，其中 as she tries to capture her mother's attention 是 as 引导的时间状语从句。
译文在实验中，一位母亲被要求先以正常方式与孩子互动，随后摆出面无表情的样子，不再给予孩子任何视觉上的社交反馈；孩子在试图吸引母亲注意的过程中变得越来越痛苦。
考点before 后接并列动名词 putting on 与 not giving，注意否定词 not 的位置 · 冒号起解释说明作用，相当于对实验结果的补充
3On the other hand, Tronick himself is concerned that the worries about kids' use of screens are born out of an "oppressive ideology that demands that parents should always be interacting" with their children
主干主语：Tronick himself；谓语：is concerned；宾语：that 引导的宾语从句（从句主干：the worries are born out of an ideology）
结构主句谓语 is concerned 后接 that 宾语从句。宾语从句中 the worries 是主语，about kids' use of screens 是介词短语作后置定语；are born out of 是谓语，宾语 an oppressive ideology 后接 that 定语从句 that demands...，该定语从句中又嵌套 that 宾语从句 that parents should always be interacting，其中 should be interacting 为进行式，含"理应一直"的责备意味。
译文另一方面，Tronick 本人担心的是，人们对孩子使用电子产品的种种忧虑，源自一种"压迫性的观念"——它要求父母必须时时刻刻与孩子互动。
考点be born out of：源于、由……产生，高频短语 · 三层嵌套：宾语从句→定语从句→宾语从句，需逐层拆分