今天给大家分享一篇来自剑桥雅思真题的雅思小作文范文，具体题目如下：

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.

高分范文如下：

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. 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.