考研英语中经常会涉及到一些特殊句式，其中让大家比较头疼的就是倒装句，今天给大家讲解一些倒装句的知识。英语中的倒装分为全部倒装和部分倒装，我们今天先来学习全部倒装的知识。
1. 表系主倒装
例1：Implicit within Tylor’s definition is the concept that culture is learned, shared, and patterned behavior.(2003年翻译)
表系主的倒装指的是，表语置于系动词之前。在例1中，系动词是is，表语是Implicit within Tylor’s definition，主语是the concept that culture is learned, shared, and patterned behavior，出现表系主的倒装的原因是主语比较长，为了避免头重脚轻，所以就将主语放到了后面。像该句中的主语中就嵌套了一个同位语从句that culture is learned, shared, and patterned behavior，解释说明the concept，主语就比较长。表系主倒装结构的翻译还是整体顺译，所以上句的参考译文为：在泰勒的定义里比较隐晦的是这样一个概念：文化是一种习得的、共享的和模式化的行为。
(2)Than引导的比较状语从句的倒装
例2：Parents watch more TV than do their children.
该句中的than do their children还原一下，应该为than their children watch TV，但是我们会发现这样的话整个句子会显得很冗长、啰嗦，所以，在than引导的比较状语从句中，如果从句谓语使用do/did/does来代替主句中出现的动词内容，那么该从句使用全部倒装。在翻译的时候，可以翻译为“与…相比，主句”。所以例2可理解为：与孩子相比，父母看更多的电视。
接下来再通过一个试题例句进一步巩固一下这个知识点：
例3：Those forced to exercise their smiling muscles reacted more enthusiastically to funny cartoons than did those whose mouths were contracted in a frown, suggesting that expressions may influence emotions rather than just the other way around.(2011年完形)
本句主干为Those reacted more enthusiastically to funny cartoons，forced to exercise their smiling muscles是V-ed粉刺短语做后置定语，修饰those，than did those whose mouths were contracted in a frown是比较状语，其中嵌套了一个whose mouths were contracted in a frown定语从句，suggesting that expressions may influence emotions rather than just the other way around是一个结果状语，其中嵌套了that expressions may influence emotions rather than just the other way around宾语从句。
整句参考译文为：与那些嘴巴收缩成皱眉状的人相比，那些被迫去练习笑肌的人对于有趣的卡通漫画反应更加强烈。
