never, no, neither, not only, hardly, scarcely, little, seldom,rarely, not until, nowhere, at no time, on no account, in no respect, in nosense, by no means, in no way, no longer, no less, no more, no sooner than,under no circumstances, in vain, still less。如：
Not only is its direct attack on their discipline, it bypasses theessence of what sociologists focus on.
Under no circumstances should we do anything that will benefitourselves but harm the interests of the state.
Only when you have obtained sufficient data can you come to asound conclusion.
often, so, well, to such a degree, to such an extent, to suchextremes, to such a point，many a time。如：
So involved with their computers do the children become thatleaders at summer computer camps often have to force them to break for sportsand games.
(1)出于修辞需要，表示方向的副词：out, down, in, up, away, on。如：
Down jumped the burglar from the tenth floor when he heard someoneshouted at him.
(2)出于习惯用法：here, there, now, thus, hence, then。如：
Now is yourturn. There goes thebell.
Much as I have traveled, I have never seen anyone to equal her, inthoroughness, whatever the job.
(2)出现在句型be+主语+其他, come what may中。如：
Our civilization has accumulated an incredible amount ofknowledge—be it scientific or artistic.
The business of each day, be it selling goods or shipping them,went quite smoothly.
Come what may, I’ll be on your side.
Hydrogen burns much more cleanly than do other fuels and is easy to produce.
Reading is to the mind as is exerciseto the body.