部分倒装

否定副词或否定副词词组位于句首时要倒装，不居句首时，则用正常语序。如：never, hardly, seldom, scarcely, barely, little, not, nowhere, not a bit, not often, not until, no sooner, on no account, at no time, by no means, not on any account, on no consideration, in no circumstances,in no way, in no case, hardly/scarcely/…when, no sooner…than…, not only…but also…等。

Never does he fail in the exam. On no account will he give up. Not until the result of exam came out did she feel relaxed. Hardly had he arrived when it began to rain.（倒装） He hardly had arrived when it began to rain.（正常语序）