一、长句的用法

长句含有许多修饰语，适合表达准确而复杂的思想，解释观点或理论，描写细致的事物。写作时，考生要注意前后句子之间是否存在联系，善于发现简单句之间的关联，用恰当的连接词将简单句连接起来，组成准确地道的复杂长句，增加文章的气势。

如：原句：Lies do harm to those who are being told.Lies also do harm to those who tell them.(https://www.daowen.com)

优化：Lies not only do harm to those who are being told，but also do harm to those who tell them.

原句：Natural resources are very limited.They will be exhausted in the near future.It is not true.But it becomes a major concern around the world.This is a widely accepted fact.

优化：It is widely accepted fact that there is a major concern around the world for the exhaustion of limited natural resources in the near future，though it is unlikely to be true.