Ⅱ.部分倒装
谓语的一部分(如助动词、情态动词或"to be")置于主语之前，引起部分倒装。
(1)由否定词(not/never/little/no sooner/not until/hardly/rarely/scarcely/seldom/nowhere)开头的句子引起部分倒装.
Little did we expect that he would fulfill his task so rapidly.
No sooner do I get one problem settled before another appears.
Never before have we made so great achievement in science and technology.
Not until dark did he got home.
In vain did we try to persuade him to give up smoking. (我们都没有办法劝他戒烟。)
On no account should any money be given to a small kid.
By no means are we satisfied with the success we have achieved.
At no time and under no circumstances will China be the first to use nuclear weapons.
(3)当频度状语(often/always/once/many a time/now and again/every other day/every two hours)等及方式状语"thus"等置于句首时，引起部分倒装
Thus was the Emperor deceived.
Not only did I forger to close the window, but also I forget to lock the door.
(5)从属连接词 “no sooner..than， scarcely..when, hardly..when”等表示“一…就…”概念时，且“no sooner, scarcely，hardly’’置于旬首时，引起部分倒装。此结构中的谓语动词用“过去完成时(从句)+过去时(主句)"
Hardly had he arrived when she heard the telephone ring.
No sooner had we gone home than it began to rain heavily.