Question

语法问题

In no other time in history have we seen sth. that is so ....

为什么是have we seen呢？
否定状语就是否定词+状语吗？

Answer 1

In no time否定状语 位于句首引起部分倒装.所以 we have seen 变成了have we seen...

常考的放于句首引起部分倒装的含有否定意义的状语有： never, seldom, rarely, little, few, hardly/scarcely ... when ..., no sooner ... than ..., at no time, by no means, no longer, not only ... but also ..., not until, nowhere, neither ... nor ... 等。例如： Never shall I forget this lesson. 我绝对不会忘记这个教训。// Seldom in all my life have I met such a determined person. 我一生中很少遇见这样意志坚定的人。// No sooner had we reached the station than the train left. 我们刚到车站， 火车就开了。// No longer will I believe a word you say. 你的话我以后一个字也不相信了。// Not only was Churchill a statesman, but also (he was) a poet.(not only ... but also ... 连接两个句子时， 前一个句子倒装， 后一个不倒装)丘吉尔不仅是一位政治家， 还是一位诗人。// Not until quite recently did I have any idea what a guided missile was like. 直到最近我才知道导弹是个什么样子。

Answer 2

In no other time否定状语 位于句首引起部分倒装.所以 we have seen 变成了have we seen...

Answer 3

现在完成时，，表示对现在的影响

Answer 4

在历史我们所能看到的东西是……
现在完成时态表对现在的影响。否定状语一般为否定次+状语或否定副词。由于IN NO OTHER TIME IN HISTORY 存在否定词 HAVE 做助动词提前。

Answer 5

因为语句开始用了否定词in no time,这个句子要部分倒装，变成类似于疑问句的语序.

Answer 6

时间状语位于句首，会引起句子部分倒装