15-1: 

There are more problems with students’ behavior in my countries. What are the causes and what are your solutions?

Poor student behavior seems to be an increasingly widespread problem and I think that modern lifestyles are probably responsible for this.(概述及总说，开篇点题而已，说明问题及原因)

In many countries, the birth rate is decreasing so that families are smaller with fewer children. These children are often spoiled by their parents, not with love and attention because working parents do not have time for this, but in more material ways. The children are allowed to have whatever they want and to behave as they please. This means that the children grow up without consideration for others and without any understanding of where their standard of living comes from. When they get to school age, they have not developed and self-control. They have less respect for their teachers and do not follow school rules in the way that their parents did.（一个话题，从家庭到学校，层层深入。用词衔接很好，在家受父母宠爱，没规则；到学校后也不遵守规则）

Teachers often complain about this problem and measures should be taken to change the situation. But I think that the solution to the problem lies with the families who need to better understand the harm of spoiling their children. If they could raise their children to be considerate of others and to be responsible individuals, the whole community would benefit.（提高父母的认识，从根子上解决）

Parenting classes are needed to help parents to achieve this goal, and high-quality nursery schools could be set up that would support families more in raising their children. The government should fund this kind of support for parents because this is no longer a problem for individual families, but a problem for society as a whole.（一个方案，多方支持）

主体段1就是写原因，层层深入，从家庭到学校，结构紧密。主体段2-3 写的是解决方法，parents' awareness, parenting classes, nursery schools, financial support from the governments.等等，结尾自然，一气呵成。虽然生字不多，但用词很巧妙。