一、倒装句的意义
1. 适应一定的语法结构的需要，主要是指疑问句句型结构的需要。
e.g. May I come in？
Was the People‘s Liberation Army founded in 1927？
2. 为了强调某一部分，而把这部分放到句首，构成倒装。
e.g. Never have I been late for school this term.
So early did he come to school that no other students came.
二、倒装的使用情况
1. 在“there be”结构里，there是引导词，主语在be后。
e.g. There is a box on the table.
2. 在疑问句中。
e.g. Is she singing in the classroom？
What does your mother do？
3. 在here， there等副词开头的某些句子里(要用一般现在时态)。如果主语是人称代词，主语和主要动词的词序不变。(完全倒装)
e.g. There goes the bell.
Here is an apple for you.
There she comes.
4. 重复倒装句型，用在以so， nor， neither开头，表示谓语所述的情况也适用于另一个人或一事物的肯定或否定句中。so用于肯定句，表示“也一样”“也这样”；nor， neither用于否定句，表示“同样也不，也不这样”。
e.g. I am watching TV. So is she.
My parents didn’t watch TV last night. Neither (Nor) did I.
5. 直接引语的全部或一部分放在句首时，主句中的主谓也常直接倒装。(完全倒装)
e.g. “Very well，” said the French student.
“Bring me two eggs and a cup of tea， please.” said he.
6. 在以never， little， hardly， not only， few， not， seldom等否定副词开头的句子中，采用部分倒装。如不放在句首就不要倒装。
e.g. Little did he say at the meeting.
Never shall I forget the day when I joined the Army.
比较：I shall never forget the day when I joined the Army.
7. 用于以only所修饰的副词、介词短语或状语从句的句子中。
e.g. Only when the war was over in 1918 was he able to get happily back to wrk.
Only in this way can we learn English well.
注意：如果only后的词组不是状语，不需倒装。
e.g. Only Wang Lili knows this.
8. 为了表达生动，有时把表地点、方位的副词，如 up， down， out， away， in等放在句首，同时把谓语动词放在主语之前。若主语为人称代词，主语和谓语动词的位置不变，只将副词放在句首。(完全倒装)
e.g. Away hurried the boy.
Out rushed the girl.
9. 在虚拟结构中，条件从句的谓语含有were， had 和should这三个词是，可省去if，将这些词移至主语之前。
e.g. Had I time (= If I had time)， I would go and help you.
Were I you (= If I were you)， I would go abroad.
Should he come (=If he should come)， tell him to ring me up.
10. as引导让步状语从句时要倒装(形容词/ 副词/ 名词/ 动词 + as + 主语 + 谓语)。
e.g. Proud as they are， they are afraid to see me.
Child as he is， he seems to know everything.(child前不加冠词)
Hard as he worded， he made little progress.
11. 用于某些表示祝愿的句子里。
e.g. May you succeed！
Long live the People‘s Republic of China！
12. So + 形容词、副词及such 置于句首时要倒装。
So happy did he feel.
Such was me.
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