中国教育在线
Unit6 When was it invented?
本单元的话题是“发明”，涉及科普知识与技术等内容，是学生最感兴趣的话题之一。写作体裁多为说明文，写好这类文章一定要抓住事物的特征、功能和用途。
写作此类话题作文的常用表达有：
(1)When was …invented?
(2)It was invented…
(3)They are used for…
【典型例题】
计算机在我们的生活、工作中的作用越来越大，你知道计算机的起源与发展吗？请结合计算机的发明时间（1946年）、外形、用途等方面，谈一下它的发展变化，并说明你对未来计算机的畅想。
【优秀范文】
Computer
Computers are becoming more and more important in our daily life. Do you know when the computer was invented?
The computer was invented in 1946. At that time, it was huge. With the development of science and technology, the computer has grown smaller. Now there are many kinds of computers, such as personal computers and laptops. The computer is a very useful tool in our life. For example, it can send some messages to foreign friends by email. What’s more, it can share information with others through the World Wide Web. We can also listen to music or play the game on computers. It makes us relax.
It’s hard to imagine what our life would be like without computers. I think computers will be more convenient and they are going to change our life completely in the near future.
① 凡本站注明“稿件来源：中国教育在线”的所有文字、图片和音视频稿件，版权均属本网所有，任何媒体、网站或个人未经本网协议授权不得转载、链接、转贴或以其他方式复制发表。已经本站协议授权的媒体、网站，在下载使用时必须注明“稿件来源：中国教育在线”，违者本站将依法追究责任。
② 本站注明稿件来源为其他媒体的文/图等稿件均为转载稿，本站转载出于非商业性的教育和科研之目的，并不意味着赞同其观点或证实其内容的真实性。如转载稿涉及版权等问题，请作者在两周内速来电或来函联系。
