特殊的（考的概率极低）：
进行时和被动语态用倒装时的情况
A foreigner was sitting at the table.
-- Sitting at the table was a foreigner.
A student was killed on the road.
-- Killed on the road was a student.
部分倒装实际是一般疑问句语序
部分倒装( Partial inversion)(又称半倒装):指将谓语的一部分放在主语前面。实际上,这种部分倒装的构成同一般疑问句构成相似。如
①You can achieve the goal only in this way.
Only in this way can you achieve the goal.
② I have never seen him before.
Never have I seen him before.
③He knows little about me.
Little does he know about me
注意：复合句的从句用陈述语序而不用疑问语序,因此半倒装在复合句中用在主句中而不是从句中。
1. When he will arrive is not known yet.
2. My question is how I can get there quickly.
3.Where do you think he lives?
三句话中的画横线部分为从句
部分倒装的常见三种形式（NOS系列）：
形式一：N系列，当以表示否定、半否定的词或词组开头时
当never, never before, not, no, little, seldom, nowhere, hardly /scarcely.. when, no sooner. than, not only. but also, not until, by no means , in no case, in no way, in no time, no longer等表示否定或半否定意义的副词、介词短语、连词等放在句首时,用部分倒装
1⃣️ The computer was used in teaching. As a result, not only was the teachers' energy saved, but students became more interested in the lessons.(2009年全国卷单选)
注意：not only...but laso 句型中，not only紧跟部分用倒装，but also后部分用陈述语序
2⃣️Not until all the fish died in the river did the villagers realize how serious the pollution was.（1995年全国卷单选）
注意：not until后为从句，从句部分不用倒装，主句部分用倒装。
形式二，O系列，“only 状语”位于句首时,主句用部分倒装
Only yesterday did he find out that his watch was missing.
注意：Only修饰主语时, 句子不需要倒装
Only he knows the truth.
形式三，S系列，以so, neither; nor开头的句子或分句中
A.当上下文说的是同一人或同一事,后面是对前面所说的
情况加以肯定,此时,后面主谓结构不倒装
—Your father smoked a lot
—So he did
Tom asked me to go to play football and so I did.
B.前后两个分句所叙述对象不同时,后面分句用倒装语序;肯定句用 so do we,否定句用 neither/nor do we
I can speak English, （and） so can you.
I have never heard of such a thing, neither has she.
Tom didn't finish his homework. nor did Jane.
