(1)当“only+状语”位于句首表示强调,如:Only when one falls ill does one know the value of health.(只有生病了才知道健康的可贵。)
(2)表否定意义的词或词组位于句首。这样的词和短语主要有:never(从不),seldom(很少),rarely(很少),little(一点也不,几乎没有),hardly(几乎不),nowhere(没有地方),not until(知道……才),hardly when(一……就),no sooner than(一……就),in no way(决不),by no means(决不),at no time(从不),in/under no circumstances(决不)。如:On no account would I dare walk in that neighborhood at night.(夜晚我决不敢在那附近走。)
(3)为了生动描写动作,in, out, away, down, off等副词放在句首,句子完全倒装。如:Up went the rocket into the sky.(火箭嗖的一声飞上了天。) 注意,这一结构中如果主语是代词,则使用正常语序。如:Away they went.(他们走了。)