此外，以 not until, not only(与 but also 连用）开头的句子也应倒装，如：

Not until midnight did it stop raining.直到午夜雨才停。

Not only was he a first-rate mathematician, but he also excelled at chess.

他不仅是一流的数学家，且精通棋艺。上述短语若用于句子中间，则不必用倒装。3.以表示否定的词语在句首+倒装结构