例：They generate 20 percent of nation’s energy using renewable energy sources.
变为——
20 percent of nation’s energy is generated using renewable energy sources.
3、变换句型
根据笔者改过的无数篇流程图的经验，大部分学生考场写出来的流程图就像流水账，句型及其单调。快快看看以下句型变换方法，简单粗暴得丰富你的句型：
Bottles are collected. Then they are sent to the collection point.（简单句）
变为——
Bottles are collected, before being sent to the collection point.（分词结构）
After being collected, the bottles are sent to the collection point.（分词结构）
Once bottles are collected, they are sent to the collection point.（状语从句）
Bottles are collected, after which they are sent to the collection point.（定语从句）
4、次序词
流程图表示的是一个过程，所以先后顺序的表达非常重要。快快记下以下高分表达：
首先：At the first/initial stage/The process starts when...
其次：after that/subsequently/in the following stage/The next step in the process is...
表示同时发生：meanwhile/at the same time
最后：finally，lastly，in the final stage...
