▲in no time 的意思是“立即、马上”，不具有否定意义，当它置于句首时，其后句子不用倒装语序。如：

In no time I’ll be myself again. 我一会儿就会好的。

In no time he worked out the problem. 他立即算出了那道题。

In no time she added the figures up. 她立刻把数字加起来。

▲但是，at no time(从未、从不)置于句首时，其后句子要用倒装语序。如：

At no time have I said such a thing. 我从未说过这样的话。

At no time was the company informed. 公司从来没有得到过消息。

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

At no time in his life has he been braver than in that case. 他一生中从来没有像那一回那么勇敢。

▲ by no means / under no circumstances / in no case 等置于句首时，其后句子要用倒装语序。如：

By no means should he be left alone. 绝不能把他单独留下。

By no means should we lose confidence. 我们无论如何不能丧失信心。

Under no circumstances should I see them again. 我无论如何不该再和他们见面了。

Under no circumstances can we cash cheques. 我们在任何情况下都不兑现支票。

Under no circumstances will I surrender. 在任何情况下我都不投降。

In no case should you panic. 千万不要惊慌。

In no case should you give up. 你绝不能放弃。

In no case must arms be resorted to. 决不准诉诸武力。