写作小练笔
用所学知识简要介绍你认为最有用的发明。（词数：50左右）

I think the most useful invention is the mobile phone. With the mobile phone, we can admire many beautiful landscapes without going out. Besides, it is more convenient for us to connect with our friends and family by using a mobile phone. All in all, the appearance of the mobile phone greatly changes our lives.

【分析】本题要求用英语简要介绍最有用的发明，词数50左右。解题思路：① 选取实用性强且易描述的发明（如手机）；② 围绕其核心功能（足不出户赏景、便捷联系亲友）展开，用简洁英语表述；③ 结尾总结该发明对生活的影响，控制词数符合要求。
【解析】I think the most useful invention is the mobile phone. With the mobile phone, we can admire many beautiful landscapes without going out. Besides, it is more convenient for us to connect with our friends and family by using a mobile phone. All in all, the appearance of the mobile phone greatly changes our lives.
【答案】I think the most useful invention is the mobile phone. With the mobile phone, we can admire many beautiful landscapes without going out. Besides, it is more convenient for us to connect with our friends and family by using a mobile phone. All in all, the appearance of the mobile phone greatly changes our lives.
【知识点】英语写作、发明介绍
【点评】本题为基础写作小练笔，考查学生英语基础表达能力，引导学生关注生活实用发明，难度适中。
【难度系数】0.6