写一篇英语议论文作文

题目

写一篇英语议论文作文
It is expected that there will be a higher proportion of old people than young people in many countries in the future.Do you think it is a positive or negative development?
开头段（背景 他人观点 自己观点）
原因段（反观点的好处,然后说自己观点的好处多于他们的观点的好处 （原因的提出 原因的拓展 原因的支持））
让步段（自己观点的好处,原因,例子）
结尾段（总结）

答案

Nowadays there is an overall tendency that many countries in the world are tending to have the problem of the aging population.Therefore,it may be that there will be a higher proportion of old people ...