考研英语复习从始至终都扮演着非常重要的角色，打好英语基础的关键是词汇和语法，而这两项正是可以通过长难句进行检验的。
In 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.
首先，我们还是需要断句。在这里我们把它断成三部分①In it, a mother is asked to interact with her child in a normal way ②before putting on a blank expression and not giving them any visual social feedback:③The child becomes increasingly distressed as she tries to capture her mother’s attention 。这个句子断句还是比较简单的。
然后我们可以开始抓主干，识修饰了，要想快速的抓到主干，我们先把从句识别出来。首先第一个从句： before putting on a blank expression and not giving them any visual social feedback。这里是一个时间状语从句。第二个从句：as she tries to capture her mother’s attention。这同样是一个时间状语从句。抓出从句之后，我们就找到了句子的主干：In it, a mother is asked to interact with her child in a normal way ，在这个句子中出现了一个冒号，冒号后边是一个同位语成分，就是起到解释说明的作用。
最后我们可以开始理解整个句子翻译了：在实验中，母亲被要求先以正常方式与孩子交流，之后摆出一副面无表情的神情并且不给孩子任何视觉上的社交反馈;孩子在试图吸引母亲注意力的过程中变得越来越苦恼。
