高中英语语法问题

Question

Why can't I smoke？
At no time_____in the meeting-room.
答案是：is smoking permitted
问：这里的部分倒装用的是具体什么语法哦。。。

Answer 1

具有否定意义的副词或短语位于句首时，后面的句子用倒装形式。
Rarely do I read novels.

Answer 2

非常简单
8．at no time （never）“决不，在任何时候都不”。置于句首时，需用倒装语序。例如：

At no time will China be the first to employ nuclear weapons. 中国绝不首先使用核武器

Answer 3

带否定意思的状语位于句首，句子部分倒装：系、助动词提前到主语之前

Answer 4

介词+no + 名词 置于句首用部分倒装，在这就是把is提到smoking前面了。

Answer 5

具有否定意义的词或词组出现在句首，如：never seldom=rarely no sooner...than... / hardly...when... hardly not only not until neither nowhere little on no occation+助动词(be,do,have,can,must)+主语+句子的其它成分不变(部分倒装的关键是助动词位于主语之前。***仅助动词而非整个谓语部分)
eg:Never has she got so many letters.
Little does he realize how important this meeting is.
Little did I see of him recently.(=I saw little of him recently)
Not until he had finished his homework did John go to bed.( 主句的主谓倒装)=John didn't go to bed until he had finished his homework.
On no occasion must you accept any money if he offers it.
Hardly had he begun his speech when he was interrupted.
No sooner had he returned than he bought a house and went to live there
Not only had the poor man been arrested,but he had been sent to prison as well.
Not only was my mother unhappy,but my father as well.
Not only did he read the book but also remembered what he read.
. Nowhere can he find the book he wants.
Nowhere in the world can you find a man who loves you so much.
Hardly did I think it possible.