[基本框架]
1.开头:说明写信目的;
2.主体:分析问题并阐述理由;
3.结尾:提出自己的建议或劝告。
[常用词块]
1.give rise to the traffic problems 引起交通问题
2.live up to parents' expectations 不辜负父母的期望
3.pass our love and friendship to others
把我们的友谊和爱传递给别人
4.take some measures to protect rare animals
采取措施保护稀有动物
5.use public transport as much as possible
尽可能多使用公共交通
6.make a contribution to protecting the environment
为保护环境做贡献