說明原因型模塊

　　These dayswe often hear that

　　It is common that

　　Why does such circumstance occurin spite of social protects? For one thing

　　For another

　　What is more,since

　　Its natural that

　　To solve the problem is not easy at all, but is worth trying.We should do something such as

　　to improve he present situation, and I dobelieve everything will be better in the future.

　　注釋：

　　1、提出論題

　　2、說明現狀

　　3、理由一

　　4、理由二

　　5、理由三

　　6、理由三引起的后果