1.描述过程，流程常见语句 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，过程的常见过渡性词句 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，应表明： 1． 最先表明是干什么工作的过程，目地是什么 2． 准备工作 3． 按時间/过程依次描述 4． 結果 5． 简易小结（无关紧要）
描述一个实物/器材的工作中过程，文章应分以下几点： 1． 实物是什么，干什么用的 2． 基础构造 3． 工作中过程 4． 简易小结