snap out of . change quickly from a bad habit，mood，or feeling to a better one摆脱某种精神状态；打起精神来
The coach told the lazy player to snap out of it ．教练要这个懒惰的球员改变作风。
snap up . take or buy something quickly and eagerly把…抢到手；争购
She snapped up a lot of bargains in the sales．在拍卖中她抢到了许多便宜货。
If you don't marry me soon， I'll be snapped up by somebody else！如果你还不快点娶我，我就会被别人抢走了！
snap up . interrupt somebody sharply抢白；突然打断（某人）的话
I don't mind a person criticizing me，but I do object to being snapped up in that fashion．人家批评我，我没意见；可象那样抢白我，我反对。
The counsel snapped up the witness who had made a slight slip in his statement．当证人的证词略有差错时，律师就狠狠地打断了他的话。
snatch at . try quickly and eagerly to seize or take advantage of攫取（某物）；抓取（某物）
She snatched at the chance she was being offered．她紧紧抓住提供给她的机会。
He snatched at the letter but was not quick enough．他想夺取那封信，但动作慢了点。
sneer at . smile unpleasantly， curling the lip at somebody 对（某人）冷笑
The fighter sneered at his opponent， trying to make him feel threatened．那拳击手朝他的对手冷笑，想镇住他。
sneer at . express a low opinion of somebody or something in strong words轻视；嘲笑
Don't sneer at a child's efforts，however weak they may seem．孩子的努力无论多么不起眼，也不要轻视。
It is very discouraging to be sneered at all the time．成天受讥笑是很令人泄气的。
sneeze at . sniff at . think of as not important认为不重要
John finished third in a race with twenty other runners． That's nothing to be sneezed at．约翰在有其他二十名选手参加的赛跑中获得第三名，这是很了不起的。
You're silly to sniff at such a good opportunity．你真蠢，这么个好机会被你拒绝了。
His opinion is not to be sneezed at．他的意见不可轻视。
Don't sniff at his effort． He's made great progress．不要瞧不起他的努力，他已经取得了很大的进步。
sniff out . discover or detect something 查出
He tried to sniff out the reason for the unpleasant feelings between them．他试图弄清造成他们两人不愉快的缘由。
It is his job to sniff out abuses of power．他的职责就是查究滥用权力的行为。
snow under . cover with snow；bury in snow 使盖满雪；把…埋在雪里
The cars were snowed under by drifts．车辆被积雪盖没了。
snow under . overwhelm with a large amount （of work，）压得喘不过气来；压倒
I'm snowed under with work at the moment．I'm afraid I can't accept any more jobs．这阵我工作忙得不可开交。恐怕我不能再接更多的活了。
We really are snowed under with new orders．我们对于新的订货确实忙不过来。
snuff out . extinguish（a candle， a lamp，）熄灭
A gust of wind snuffed out all the candles in the room．一阵风吹灭了房里所有的蜡烛。
snuff out . put to an end结束；扑灭
The Government quickly snuffed out the rebellion in the army．政府迅速镇压了部队里的叛乱。
His hopes were nearly snuffed out．他的希望几乎破灭了。
snuff out . die死
He will snuff out one of these days if he is not careful．他如果不小心 ，总有一天会送命的。
Thousands of lives were snuffed out during the war．战争夺去了成千上万人的生命。
so far as . as far as . to the place mentioned到达某个提及的地方
He walked as far as the post office．他一直走到邮局。
so far as . as far as . the same distance as象…一样远
We didn't go so far as the others （did）．我们走得没有其他人那么远。
so far as . as far as . to the extent that在…范围内；就…而言
So far as I know he will be away for three months．就我所知，他要外出三个月。
The experiment is going on smoothly，so far as I know．据我所知，实验正在顺利进行。
so… that . 如此…以致（一般表示结果）
He has done so much in so short a time that almost everyone thinks that it is a miracle．他在这么短的时间里取得了这么大的成就，几乎每个人都认为这是奇迹。
He was so ill that he couldn't go to school today．他病得很厉害，今天无法上学。
The generation growing up with TV spend so much of their time in front of TV that they hardly have enough time to study．伴随着电视机长大的一代人在电视机前花的时间太多，没有足够的时间用来学习。
so as to . in order to以便
We picked apples so as to make a pie．我们摘苹果来做馅饼。
so far . until this time or to this place到现在为止；到这里为止
So far no further news had been obtained．至今没有得到进一步的消息。
When the water has risen so far the pumps will be brought into action．水涨到这么高时，就要开动水泵。
The weather has been hot so far this summer．今年夏天天气一直很热。
This is a lonely road， we have not met another car so far．这是一条很冷僻的路，到现在我们还未遇到任何其它车子。
so far， so good . until now things have gone well顺利
So far，so good；I hope we keep on with such good luck．到目前为止一切顺利，希望我们继续能有这种好运气。
The work is difficult，but so far，so good．这项工作相当困难，可是到目前为止还算顺利。