附: 视频中讲到的流程图
视频的笔记如下:
一个流程包含4个部分
1. 原材料(raw materials)
2. 设备(equipment)
3. 处理办法(be done)
4. 产物或中间产物(product)
Introduction: 一个流程包含几个步骤
The first diagram illustrates that there are five steps in the process of making cement.
转移/运输： transport; transfer; send; bring
1.中间段落的第一句话交代原材料
As for cement making, limestone and clay are the raw materials used in this process.
2. 任何一个设备的后面都可以跟where从句(请注意where前面有一个逗号)
In the first stage, limestone and clay are sent to a crusher, where they are crushed to produce powder.
3. 任何两个步骤之间都可以使用once/after( 一旦…)进行连接
Once/after the powder is mixed in a mixer, it is further transported to a rotating heater, where it is heated for sometime.
4. 任何两个步骤之间也可以使用after which进行连接
Then the powder is mixed in a mixer, after which it is further transported to a rotating heater, where it is heated for some time.
5. 任何一个产物的后面都可以跟一个非限制性定语从句(, which)
In step four, the mixture is grinded by a grinder and at the same time it is manufactured to cement, which also needs to be packed into bags in the final stage.
6. 写好连接过渡词
In the first stage, At the beginning;
the whole process begins at
After that; then
In step two; in the second step
The third step involves……
The whole process ends at…
流程图的结尾
1. 2 diagrams- 比较两个流程的异同，或者复杂程度
All in all, the process of cement making is more complex than that of concrete production as it involves more steps.
2. 1 diagram- 哪一个步骤最复杂因为什么原因
All in all, the third step of cementproduction is more complex than others as it requires a higher temperature.
任务三：流程图写作
（图片已收藏）
流程图参考文章
The diagrams illustrate the stages and equipment used to produce and recycle glass containers.
It is apprarent that the process of glass production starts with mixing raw materials, including sand, soda ash, limestone and some other chemicals. Once mixed, the mixture is transported to a glass furnace, where it is melted at 1500°C. In step three, the molten glass obtained is shaped to various forms by blowing and a variety of glass containers are produced finally.
The process of recycling glass containers starts from collecting the used glass, after which the recycled material is sorted by color and then washed to remove impurities. The following stages involve crushing the used glass and then melting it to molten glass. Finally, new glass products could be manufactured by moulding the molten glass.
All in all, the process of recycling glass containers is more complex than producing new ones as it involves more steps.
