As we all know, a great invention is important in our daily life. The smartphone is a good example. It is my favourite invention because it change (改：changes) our life and make (改：makes) our life convenient.（段评：本段作为记叙文的开篇,自然点出了伟大发明的主题,还直接引出你最爱的发明智能手机,思路非常清晰！这里有2个可以优化的小细节:1. 存在主谓不一致的问题,错误片段是it change our life and make our life convenient,主语it是第三人称单数,一般现在时里谓语动词要加s。2. 可以适当用上初中课标里的原因状语从句,让句式比单纯的简单句更有层次,表达效果更好。修改版：As we all know,great inventions play an important role in our daily life. The smartphone is a very good example. It is my favourite invention because it changes our life and makes our life much more convenient.）

The smartphone is very light and useful. It looks like a book. We often use it to study, work or look (改：watch) various videos. The smartphone gives us more convenience, and make (改：makes) people be nearly (改：closer) . The online world is very interesting, but offline world is more colourful, right?（段评：本段从外观和用途两个方面介绍智能手机,还能想到辩证看待线上线下世界,想法特别棒！这里有3个可以调整的地方:1. 存在介词搭配错误,错误片段是look various videos,look是不及物动词,后面接观看的内容要加介词at。2. 两处主谓不一致的小问题,分别是make people be nearly和offline world,前者主语是单数的The smartphone,谓语动词要用第三人称单数形式,后者特指线下世界,前面要加定冠词the。3. 可以加入in addition这类简单过渡词,让介绍的逻辑更顺畅。修改版：The smartphone is very light and useful. It looks like a small book. We often use it to study,work or look at all kinds of videos. In addition,the smartphone brings us much more convenience and makes people much closer to each other. The online world is very interesting,but the offline world is far more colourful,right?）

I think smartphone (改：the smartphone) is very interesting, but we shoud (改：should) use smartphone right (改：properly) !（段评：本段作为结尾直接点出要正确使用智能手机,呼应了前文的辩证思考,收尾很干脆！这里有2个需要修正的小问题:1. 存在拼写错误,错误片段是shoud,正确拼写是should。2. 存在冠词误用的问题,两处smartphone都是特指我们日常使用的这类智能手机,前面要加上定冠词the,让表达更符合英语习惯。修改版：I think the smartphone is very useful,but we should use the smartphone in a right way!）