支招小作文（87） | 流程圖 地?zé)崮馨l(fā)電

* 流程圖，選自《劍橋雅思真題集12》

流程圖類型：1）制造/制作（包括發(fā)電）工序；2）生命循環(huán)；3）業(yè)務(wù)辦理。

每個步驟都不能錯過。但是有沒有main features呢?有。單個步驟中，設(shè)備多/復(fù)雜，或工藝復(fù)雜時，是main features。

Introduction

Shown in the diagram is using geological thermal energy to generate electric power. The whole process goes through a number of steps. 

* 詞匯補充：溫度計thermometer，其中meter是“表”的意思。

Body

The first step is injecting cold water, which is stored in an above-ground tank, into the injection well, which has a depth of 4.5km / goes down to the depths of 4.5km. Then, the water goes through the geothermal zone – a layer of hot rocks, and reaches the production well, whose depth is identical to that of the injection well and whose width is greater. As the water goes through the hot rocks, it becomes hot water. After this step, hot water is pumped up and goes into the condenser, which is also situated above the ground. The condenser produces steam from the hot water, and as the steam reaches the turbine, the turbine spins. The spinning makes the generator work and produce electricity. At this point, electric power is transmitted by the towers and wires.

* 獨立步驟不要用定語從句寫。定語從句是補充說明。在流程圖中，用來補充說明流程中的工具/器械/設(shè)備的特點。

* 難點在于動詞。

* 不要把步驟拆分太細(xì)碎，以避免都是簡單短句。

* 主語的多樣性：流程的步驟（“步驟”這個詞或具體步驟操作/行為）、流程的主體（水）、流程中的工具/器械/設(shè)備。

Conclusion

Overall, the entire process is moderately complex / of moderate complexity.

* 流程圖的總述：整個流程是否復(fù)雜。