托福阅读长难句按照不同的成分划分有多种类型，然后又有不同成分之间的杂糅。按照句子成分的排序来说，倒装句会是一类大家不陌生的长难句类型。倒装句又分为部分倒装和完全倒装。部分倒装是把谓语动词的一部分移至主语的前面;全部倒装是把整个谓语动词置于主语之前。接下来前程百利小编具体介绍这两类倒装句。
一、全部倒装
1.here, there, away, down, in, up, off, out, now, then, next, thus 等副词开头的句子里,谓语动词只有一个,主语不是代词。
2. 介词短语作状语放句首
3. 表语置于句首表强调,倒装结构为:表语+连系动词+主语
1)形容词+系动词+主语
出席会议的是怀特教授。
Present at the meeting was Professor White.
2)过去分词+系动词+主语
Gone are the days when they could do what they like to the Chinese people.
3)介词短语+be+主语
Among the presents are flowers, candles and toys.
4. 用于so, nor, neither, 开头的句子,表示重复前句的部分内容; 原句的谓语应于前句谓语的时态,形式相一致。
5. 直接引语的全部或一部分置于句首时
6. 为了保证句子平衡,或为了强调表语或状语, 或为了使上下文紧密衔接时
They arrived at a farm house, in front of which sat a small boy.
二、部分倒装
1. 用于疑问句.
2. 在虚拟语气中,条件句中若有were, had或should, 可将if省去,将were/should/had 提到句首引起倒装.
3. 用于adj/n/v + as/though 引导的让步状语从句中
4. 在so/such…that (如此…以至)句型中
5. Only +状语位于句首时
6. hardly…when; no sooner… than; not until, not only, never, not, no longer, little, seldom, scarcely, barely, in no time, nowhere , by no means, in no case, 等否定副词和连词位于句首时。
部分倒装：情态动词，系动词，助动词置于主语前
1. Only recently have investigators considered using these plants to clean up soil and waste sites that have been contaminated by toxic levels of heavy metals – an environmentally friendly approach known as phytoremediation.
2.In contrast, should another ice age occur, sea level would drop drastically. During the last ice age, sea level dropped about 120 meters.
3. Should the use of rewards fail, members can frequently win by rejecting or threatening to ostracize those who deviate from the primary group's norms.
完全倒装：谓语动词位于主语之前
Missing until recently were fossils clearly intermediate, or transitional, between land mammals and cetaceans.
以上就是前程百利小编带来的托福阅读长难句中倒装句的两类中倒装分类。考生如果不了解倒装句，可能会在句子分析中遇到困难。预祝大家托福考试取得好成绩!
