第五课时 (Section B 3a—3b)单元同步作文指导本单元以“谈论重要发明”为话题，要求同学们能够从发明时间、大小、用途等方面描述一项发明。本单元常见的作文话题：介绍历史上的一项重要发明；介绍你身边的人或你自己的一项新发明等。话题介绍 假设这周你们学校的英语角谈论的话题是“手机的发展史”。请你从手机的发明时间 (1973 年 ) 、外观 (large ， heavy) 和用途等方面，在英语角和同学们谈论一下它的发展变化，并描述你对未来手机的畅想。要求： 1. 语意连贯，语句通顺；2 ．不少于 80 词。典例在线 本文是一篇介绍手机的说明文。写作时可按照如下思路进行：本篇作文主要介绍手机的相关信息，因此我们可以按照时间顺序进行描述：过去 ( 历史 ) 、现在 ( 使用状况 ) 以及将来 ( 前景及发展趋势 ) 。写作时要特别注意正确使用一般过去时及其被动语态。审题指导 Cellphones are becoming more and more important in our daily lives.Do you know the history of cellphones ？ The first cellphone was invented in 1973.At that time ， it was like a building brick and much heavier than the cellphone today.Cellphones have many uses.For example ， we can use cellphones to talk to others at any time.We can also use cellphones to take photos ， listen to music or surf the Internet.I believe that cellphones will become thinner and thinner and that smartphones will take the place of computers in the future.经典范文 ①Small inventions that changed the world②...was invented by...③It is used for...④It is said that...⑤It is very important/comfortable/convenient/useful.⑥Basketball has not only become a popular sport to play ， but it also become a popular sport to watch.⑦...is/are becoming more and more important in our daily lives.句子积累 造纸术不仅是中国古代的伟大发明，同时也促进了世界文明的发展。请 根 据 下 面 表 格 里 所 提 示 的 内 容 ， 以 One of the Most Helpful Inventions 为题写一篇短文。词数 60 ～ 80 之间。实战演练 InventionPaperTimeWestern Han DynastyInventorCai LunMaterialsbark ， ropes ， rags and so onUseswriting ， painting ， printing books and so onOne of the Most Helpful InventionsAs we all know ， paper is one of the four most important inventions in ancient China.It was invented in the Western Han Dynasty by Cai Lun.After he had done many experiments ， Cai Lun made paper with bark ， ropes ， rags and so on.It is a great contribution to the world.Nowadays ， paper is very useful in our work ， study and daily life.We can use it to write ， paint ， print books and so on.Thanks for the invention of paper ， it has made our life more colorful.
