英语说明文怎么写?

题目

英语说明文怎么写?
英语说明文（expository essay）应该怎么写.
我选择的主题是world hunger.
第一段introduction写什么.
接着body paragraph.还有个总结.文章中可以用quotes.

答案

世界饥荒啊,很容易啊The world's total hunger population had reached over one billion over the last 6 months.Due to the large shortage of funds and the tools to cultivate,more and more people are dying....