Dear Reed,
I have read your last letter about our future life. I'm glad to share with(与...分享) you about something I want to invent in the future.
I hope in the future we can travel anywhere we want with just a special bag. It is small and comes
in different colours. It's just like our schoolbag, but it is specially designed(专门) as a form of transport.
When we need to go to school or go for a day trip(一日游), we just carry it on our shoulders and turn it on. Then we can fly in the air. With the GPS inside, it will lead the way(带路) so that we can easily reach where we want to go.
I hope we can travel in an easy and interesting way. The special bag can make it possible, as well
as(还) produce less pollution. What do you think?
Best wishes,
Li Hua
第一段表明自己的写信目的。
第二段介绍自己未来希望完成的发明。
第三段介绍发明在生活中的具体功能。
最后一段解释这项发明的原因。