In twenty years, I think I'll be a policeman. I will work in my hometown, because I love it and I want to protect it.(开篇点明未来的职业、工作地点及原因)
Although being a policeman will be dangerous, it will also be exciting. I'll do my best to help people who are in and make them feel safe. I will also help the students in need. (运用although句型、do one's best to do sth.和be in danger描述了工作内容)
What's more, I will live in a small but comfortable apartment with my family. When I'm free, I will travel to other cities with my family. I will spend time with them and enjoy life with them. (描述未来的家的样子以及空闲时间的活动安排,层次分明,脉络清晰)
That's my life in the future. I will study hard to make it come true. (总述如何实现未来的生活;字迹工整)