明对社会发展的重要性；设计并介绍一项能改善生活的新发明。
写作指导
假如你是李雷，你的发明——智能垃圾桶在你校“小发明，大智慧”比赛中获得了一等奖。你的美国笔友Tony得知该消息后，给你发来电子邮件表示对你的发明很感兴趣。请你根据下面的图示信息，用英语给他回一封电子邮件，介绍一下你的发明。词数100左右，开头和结尾已给出，不计入总词数。

参考词汇：waste bin 垃圾桶；sort rubbish 垃圾分类
Dear Tony,





Yours,
Li Lei
写作佳句
1. 我很高兴你对我的发明感兴趣。
you’re interested in my invention.
2. 它由特殊的材料制成，内部有四个独立的区域。
It special materials and has four separate areas inside.
3. 而且，我们可以通过声音控制它。
, we can control it by our voice.
4. 有了这项发明，人们就不必花时间自己分类垃圾了。
With this invention, people don’t need to by themselves.
5. 期待你的回复。
.
思路导引
1. 人称：第人称
2. 时态：
3. 体裁：文
4. 列提纲

写作范例
Dear Tony,
How’s it going? I’m glad that you’re interested in my invention. Let me introduce it to you.
I invented this smart waste bin three months ago. It is made of special materials and has four separate areas inside. It can not only collect rubbish but also sort it into different groups automatically. What’s more, we can control it by our voice. If we say “Open”, the waste bin will open itself for us. It’s very convenient for people of all ages to use it.
With this invention, people don’t need to spend time sorting rubbish by themselves. It will help protect our environment and make our daily life much easier.
I hope to show it to you when you visit next time. Looking forward to your reply.
Yours,
Li Lei

【写作佳句】
1. I'm glad that
2. is made of
3. What's more
4. spend time sorting rubbish
5. Looking forward to your reply
【思路导引】
1. 一、三
2. 一般过去时和一般现在时
3. 说明