威士忌对你有好处

　　A professor of chemistry wanted to teach his class a lesson about the evils of alcohol, so he produced an experiment that involved a glass of water, a glass of whiskey and two worms.

　　化学老师要给班里的同学们讲解酒的坏处，他用一杯水、一杯威士忌和两只蠕虫做了一个实验。

　　"Now, class, observe closely the worms," said the professor putting a worm first into the water. The worm in the water writhed about, happy as a worm in water could be.

　　“同学们，注意观察这两只蠕虫，”老师说着将一只蠕虫放入水杯中。这只虫子如鱼得水般地在水中扭动着。

　　The second worm, he put into the whiskey. It writhed painfully, and quickly sand to the bottom, dead as a doornail.

　　老师又把第二只蠕虫放进了威士忌酒杯，它痛苦地扭动着，很快沉到了杯底，死了。

　　"Now, what lesson can we derive from this experiment?" the professor asked.

　　“同学们，你们能从这个实验中得出什么结论呢？”老师问道。

　　Little Johnny, who naturally sits in back, volunteered, "Drink whiskey and you won't get worms!"

　　从来都是坐在教室后排的小约翰尼主动答道：“喝威士忌就不会长寄生虫！”

　　重点讲解：

　　1. do sb. good

　　对…有好处（或有帮助）；

　　eg. The outing will do me good.

　　这次远足对我会有所助益。

　　eg. It's probably done you good to get away for a few hours.

　　离开几小时或许对你有好处。

　　eg. You don't do anybody any good by getting yourself arrested.

　　你要是被抓了对谁都没有好处。

　　2. derive from

　　获得；取得；得到；

　　eg. Mr Ying is one of those happy people who derive pleasure from helping others.

　　英先生属于那种助人为乐的快活人。

　　eg. Mary has derived a lot of benefit from her tuition.

　　玛丽从她的教学中得到很大收益。

　　eg. We can derive great pleasure from our studies.

　　我们可以从读书研究中获得极大的乐趣。