今天讲解的是剑桥雅思8第78页流程图（生产制作类）。
视频笔记▼
一个流程包含4个部分
1.原材料(raw materials)
2.设备(equipment, apparatus)
3.处理办法(be done)
4.产物或中间产物(product)
Introduction: 改写题目补充词汇:转移/运输 transport; transfer; send; bring1.
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In the first stage, limestone and clay are sent to a crusher,wherethey 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/afterthe powder is mixed in a mixer, it is further transported to a rotating heater,whereit 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 whichit is further transported to a rotating heater,whereit 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 groundby a grinder and at the same time it is manufactured to cement,whichalso needs to be packed into bags in the final stage.
6.同一个步骤中有两个处理过程while，时间状语从句
7.合理的使用过渡词进行过渡(笔记中红色加粗的部分)In the first/initial stage,the whole process begins with doing......In step two,The second step involves doing…...The whole process ends at…...
参考范文▼
The diagrams illustrate the phases and apparatus to make cement and how cement is utilized in the production of concrete for construction.The production of cementstarts withcrushing limestone and clay by a crusher to make powder, whichis then mixed in the next step.
After that, the mixture is passed through a rotatingheater, whereit is heated for some time.Once ground by a grinder in step four, the cement is produced, and it also needs to be packed in the final stage.Concrete is made up of half gravel, quarter sand, 10% water and 15% cement.
All of these are added together into a rotating concretemixer, wherethey are heated for a proper time until concrete is yielded.To sum up, the production of cement involves a 5 stage process that begins with crushing raw materials and ends at the packaging of new cement. Making concrete is a simpler process that involves mixing four ingredients in a concrete mixer.
