1.描述过程，流程常用句子
the following diagraph shows the structure of…… 
the picture illustrates …… 
it mainly consists of…… 
it works as follows. 
it always involves following steps. 
the whole procedure can be divided into…stages. 
2.描述流程，过程的常用过渡性词语 
firstly 
secondly 
thirdly/finally 
the first step is to 
the next step is to 
the last step is to 
the first stage involves 
in the next stage 
in the following stage 
in the last stage 
first of all 
to begin with 
next 
then 
later 
at the same time 
simultaneously 
subsequently 
consequently 
before this 
during 
after this 
in the course of 
in order to/in order not to 
in order that 
so as to/so as not to 
描述流程的文章，应说明： 
1． 首先说明是做什么工作的过程，目的是什么 
2． 准备工作 
3． 按时间/过程先后描述 
4． 结果 
5． 简单总结（可有可无） 
描述一个实物/器具的工作过程，文章应分以下几点： 
1． 实物是什么，做什么用的 
2． 基本结构 
3． 工作过程 
4． 简单总结