来源： 浏览： 发布日期：2019-08-22 10:01
The diagram below shows how electricity is generated in a hydroelectric power station.
Summarize the information by selecting and reporting the main features, and make comparisons where relevant.
于是，接下来的sample essay就遵循day and night and again 的 cycle 来写。
The diagram is an illustration of how a hydroelectrical power plant works to generate electricity.
The dam obstructs the influx of water from the river and creates a reservoir at a great height. At the bottom of the dam is an entry point that is open during the day and through which water flows into the tunnel, which leads to the reversible turbines, which spins. The spinning produces power that operates the electricity generator. 「独立的重要步骤不拿定语从句写，而是单独写一个句子/或者是状语从句。」At this point, electricity is produced. Electricity is then transmitted via the power lines to the national grid and to households, manufacturers and businesses.
In addition, water goes into a low-level reservoir, and during the night, water flows inversely through the way it flows down to the intake point, which is closed at night, and back to the high-level reservoir. As a new day starts, water is let down again.
Overall, electricity production with hydraulic power is not a complex procedure, with simple apparatus.