① 下列三类否定词位于句首时要倒装。
（1）否定副词：
never（从不），hardly（=scarcely几乎不），seldom（很少），little（几乎不），rarely（很少）
（2）否定副词短语：
by no means（绝对不），in no way（绝对不），under no circumstances（在任何情况下都不）
（3）否定副词从句：
not until he came（直到他来），only when he came（只到他来的时候），only after he came（只到他来之后）
② 正确的倒装结构
（1）主语+be动词→be动词+主语
He is never interested in sports.
Never he is interested in sports.
Never is he interested in sports.
他对体育运动从不感兴趣。
（2）主语+情态动词或will，shall等→情态动词或will，shall等+主语
He can by no means handle it.
By no means he can handle it.
By no means can he handle it.
他绝无能力处理那件事。
（3）主语+动词→do/does/did+主语+动词原形
只有把工作做完后我才离开。
Only after I finished my work I left.
Only after I finished my work did I leave.
提示
①not only…but also（不仅……而且）连接两个对等的从句时，not only后用倒装，但but also后的句子不倒装，also应置于句中或省略，或不用also，而在句尾加as well。
她不仅会唱歌而且还会跳舞。
Not only she can sing，but also she can dance.
Not only can she sing，but she can（also）dance.
②not同neither，nor连用。
He can't sing，nor I can.
He can't sing，nor can I.
他不会唱歌，我也不会。
=He can't sing，and neither can I.
③no sooner…than（一……就……）结构要倒装。
No sooner I had left than he came.
I had no sooner left than he came.
No sooner had I left than he came.