他们没在为期末考试作准备，我们也没有。
2)具有否定意义的词或短语置于句首时(除否定词修饰主语外)，句子一般要写成部分倒装句。这类词或短语常见的有：not, never, seldom, hardly, rarely, scarcely, by no means, under no circumstances, in no way, at no time, no sooner … (than), hardly … (when), not only … (but also), not until… ,等。例如：
Hardly had she sat down when she heard someone knocking at the door .
她还没来得及坐下来，就听见有人敲门。
Not until twelve o‘clock did he go to bed last night .
他昨晚直到十二点钟才睡觉。
Never have my sisters been to Hong Kong before .
我的妹妹们以前从未去过香港。
No sooner had I returned home from New Zealand than I bought a house and went to live there.我从新西兰一回国，就买了一栋房子并在那儿住下了。
So far as I know, seldom does Mary come back to see her mother.
就我所知，玛利几乎很难回来看她妈妈。
Scarcely a drop of rain fell here last fall . (否定词修饰主语时，句子不用倒装。) 去年秋天，这儿几乎没下一滴雨。
3)当so, often, only等表示程度、频率的副词放在句首时，句子一般要倒装。例如：
Only in this way can you come up with a solution to the problem.
只有这样，你才有可能想出解决这个问题的办法。
So serious was the situation that everybody faced a test.
形势如此地严峻，每个人都面临着一场考验。
So hard did he overwork that he fell ill at last. 他太操劳过度以致最后病倒了。
4)当there, here, then, now等副词在句首，且谓语是come, go, be等动词时，句子一般要全部倒装。其意义在于引起他人的注意。如果这类句子的主语是代词，则不用写成倒装句。例如：
Now, here goes the story.这个故事是这样的。
Look, there comes the taxi.瞧，出租车过来了。
Then came another question.然后又一个问题提出来了。
Then followed the four-year War of Liberation.接下来是四年的解放战争。