说明(Instructions )与广告（Advertisements）
美文欣赏（Enjoy Reading）
Space Pens:$34.95
Imagine a pen that works no matter what the conditions, from wet paper to writing upside down. Sounds impossible, doesn’t it? Not when you’ve got a Space Pen!
These amazing pens have a great history of being approved for use in space, since they effortlessly write in the gravity free vacuum of space, and at any angle. They can also write in extreme heat and cold temperatures(from –50℉ to 250℉), making it the pen of choice for the Everest North Face Ski Expedition(珠穆朗玛北峰滑雪探险) in 1997. Now that you know that Space Pens are the clear choice for all your writing needs on your next adventure!
决定一件商品是否会被购买的要素是什么？1.用途；2.特点；3.性能；当然还有其价格。
本文依次介绍了以上诸要素，但最主要的还是其独特的性能：不惧严寒酷暑、经得太空考验--堪为探险时的明智选择（the clear choice）！
明白广告该怎么写了吧！人无我有，人有我精，人精我特！成就一番事业是否也该如此？！
常用表达法(Useful Expressions)
严格地讲，说明与广告不应该属于同一个范畴，但它们在许多地方又具有密不可分的联系，特别是在描述该物体及阐述其特性时更是如此。所以本文将其合并在一节内容中来学习。
1. 关于物件的描述方法，可参看“描述物体（Describing Things）”一节；
2. 说明的语言应该尽量科学准确，不含糊其词；
3. 广告的语言应该趣味性强，通俗易懂。易于朗读，便于记忆。
写作练习
武汉第三制药厂（Medical Plant）研制了一种新药，药品已被外商订购。制药厂请你为该厂产品写一份说明书，请根据提示完成：
1. 本品为中药，对心脏病疗效显著。
2. 用量：每日三次，一次两粒（pill）;发病时可加服1---2粒。可长期服用。
3. 服药后如感身体不适停服。小孩和孕妇（pregnant,adj.）禁服。
4. 本药品应放在阴凉干燥处。
5. 使用本药品还应严格听从医生的指导。
注意：说明书必须包括以上所有要点，但不要逐条翻译。（约100字）
习作点评
The new medicine is developed by Wuhan No. 3 Medical Plant. It is traditional Chinese medicine and it has good effect on heart diseases. Patients had better take the medicine three times a day, two pills for one time. For a patient who has a heart attack, one or two pills more can be taken. This medicine can be kept for long. If patients feel unwell after taking the pills, do stop taking it . Children and pregnant women are forbidden to take it.
The medicine should be stored in a cool, dry place. About how to take the medicine, the patients should do strictly as the doctor says. 被动句开篇别具匠心
good改为 special更好
应为two pills at once或 at a time
more用得好
以下几句所用语言现象较多且准确，值得初学者借鉴。
参考范文
Wuhan No. 3 Medical Plant has invented a new kind of medicine. It is very good for heart trouble (disease). It should be taken three times a day and two pills once. It can also be taken one or two more pills if needed. This kind of medicine can be used for a long time. It’s dangerous for children and the pregnant. They mustn’t take this medicine. If you are not feeling well after taking the medicine, you should stop taking it. This medicine should be kept in a cool and dry place. It’s better to follow the doctor’s advice before taking it.