never (从不), seldom (很少), few (很少), little (很少), rarely (很少), barely (很少), hardly (很少), scarcely (很少), nowhere (任何地方都不)等。例：1a,Never before has a machine been so efficient and accurate as the electronic computer.1b,Never has air pollution been as bad as it is now in this city.1c,Little did I know when I embarked on this quest where it would leas me.
at no time (决不, 任何时候也不), by no means (决不), in no case (决不),under no circumstances (无论如何也不), in no sense (决不), in no way(决不),on no account (决不), in vain (徒劳),no longer(不再), not until (直到……才),no more (不再), not for a moment (从不) 等。not only…but also (不但…而且), no sooner…than (一…就), hardly (scarcely)…when (一…就) 2a, At no time, and under no circumstances will China be the first to use nuclear weapon. 2b, “On no account allow visitorsto feed animals”, the warning can be seen on the signboard in front of every cage. 2c, Hardly had I got home when the telephone rang.
3, 以only或so引导状语或表语位于句首引起的倒装only+状语+谓语一部分+主语+谓语的另一部分+…当构成关联从属连词 so...that 的 so 位于句首时, 往往要使用倒装结构。so +状语+V+S+V+…+that引导的状语从句so +表语(形容词)+be+S+V+……+that引导的状语从句
3a, Only when you have acquired a good knowledge of grammar can you write correctly.
3b,Only under special circumstances are freshman excusedfrom freshman composition and literature examination.
3c, So little did I know about mathematics that the lecture was completely beyond me.
3d,So loudly did the students read that people could hear them out in the street.
3e,So small were the words that he could hardly see them. 字那么小, 他几乎看不见。
3f,In fact, so powerful was the new explosionthat it paved the way for a whole new era in construction and engineering