Dear Editor,

Recently many places in China were blanketed with thick fog. Everything around disappeared from our sight. Some highways were closed. More traffic jams and accidents happened .People had to wear masks .What’s worse,  many people found it difficult to breathe.　

The heavy hazy weather in China has been caused by many factors. First, the severely polluted environment contributed a lot to this nightmare. Second , the increase of cars in the city area plays an important role .  The cars send off a lot of poisonous gases . In my opinion , we should call on people to use more public transport, thus reducing the number of cars in the streets . Besides , some factories  which  cause pollution should be closed down . What’s more , we have to do more to raise people’s awareness of environmental protection .Only in this way can we expect to have more sunny days .

Best regards,

　                                                                     Yours，

LiHua

题目分析：这是一篇提纲类书面表达，文章的要点也基本上都给出来了，而且很具体，考生要把要点解释清楚，不能有遗漏。除了表达这些要点以外，还要给出自己的建议，这就要求考生自己拓展发挥，在写作的过程中，要注意使用高级词汇和高级句型，如强调句，倒装句等，让文章更上档次。同时在列举措施的时候要使用合适的连接词如：First，second， Besides, What’s more等，让文章看起来很有条理，也很流畅。本篇文章在写作时不要啰嗦，力求简洁。

【亮点说明】所给范文语言简洁，运用了一些词组：contributed a lot to有助于，plays an important role起着重要的作用，send off排放，In my opinion在我看来，call on号召。范文中的句式多变，运用不同的语法知识： many people found it difficult to breathe.这句话用了固定句型， some factories  which  cause pollution should be closed down . 这句话用了定语从句，.Only in this way can we expect to have more sunny days . 这句话用了倒装句。还有范文用了What’s worse, First, Second , Besides ,这样的关联词使文章更加连贯。