否定副词,介短的否定词位句首
never(现完)not,seldom,hardly,
little ,nowhere,by no means,
at no time,under no circumstance,
in no way,in no case,in notime
as/though引导让从
从表语为名词,名词不加冠词
So/nor/neither承接前句肯否定(同一人不倒,不同人倒装)
hardly/scarcely…when…,no sooner…that…,not only…but also…,
so…that…,such……that…,前倒后不倒
hardly/scarcely/no sooner+过完
when/that+过去
If虚拟条件从句,(were/should/had)
方式副词well,频度副词offen,many a time,once,every,two hours