Band 4.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 4.0 · Cambridge IELTS 14 · 2026-08-05
IELTS Writing Task 1 question
The diagram below shows how electricity is generated in a hydroelectric power station.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Student answer (Band 4.0)
The figure illustrate how the electricity is generated in a hydroelectric power station.The river water put into dam that is at high reservoir usually open at day and closed at night .it is man made and cyclic process. Flow of water in day at dam is increased as compared to flow at night. The generator operates the turbines at night.at power station the turbines work to generate electricity. The water flow from high reservoir to lower reservoir.
the hydroelectric power station generate more electricity at day by running turbines. All the parts of the power station work efficently.dam is the best place to store large amount of water. Comparison is made at low and high reservoir,
the main theme is electricity production.day and night shift both contribute to theworking of power station.many power lines are present in the path of the power station. as the process is cyclic water flow in both direction.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 4.0 |
| Coherence and Cohesion | 4.0 |
| Lexical Resource | 4.5 |
| Grammatical Range and Accuracy | 4.0 |
| Overall | 4.0 |
Task Achievement / Task Response — Band 4.0
The response attempts to describe the process but fails to provide a clear overview or a logical summary of the stages. The description is fragmented and lacks a clear progression from the intake of water to the generation of electricity. Several statements are inaccurate or confusing, such as the claim that water flows in both directions or that the generator operates only at night. The response focuses on isolated details rather than synthesizing the information into a coherent report. To improve, you must identify the key stages of the process—intake, turbine operation, and power transmission—and describe them in a logical, sequential manner.
Coherence and Cohesion — Band 4.0
The text lacks logical organization and paragraphing. Sentences are presented as a series of disjointed statements rather than a cohesive report. There is a lack of linking words or cohesive devices to guide the reader through the process. For example, the transition between the reservoir description and the turbine operation is abrupt. The use of referencing is also unclear, making it difficult to follow the relationship between the different components of the power station. To improve, use transition signals like 'firstly', 'subsequently', and 'as a result' to connect your ideas and organize the information into clear, thematic paragraphs.
Lexical Resource — Band 4.5
The vocabulary is quite limited and repetitive, relying on basic terms like 'work', 'place', and 'path'. There are several instances of awkward phrasing, such as 'put into dam' and 'day and night shift both contribute to the working of power station'. The word choice is often imprecise, which hinders the clarity of the technical description. To reach a higher band, you should incorporate more precise, topic-specific vocabulary related to hydroelectric power, such as 'intake', 'penstock', 'kinetic energy', and 'transmission lines', while ensuring these terms are used in the correct context.
Grammatical Range and Accuracy — Band 4.0
There are frequent grammatical errors throughout the text, including issues with subject-verb agreement ('The figure illustrate', 'station generate'), missing articles ('at day', 'at night'), and incorrect sentence structure. Punctuation is also inconsistent, with missing spaces after periods and inconsistent capitalization. The range of structures is very limited, consisting mostly of simple, error-prone sentences. To improve, focus on mastering basic sentence construction, including correct verb tenses and the appropriate use of articles. Proofreading for basic punctuation and capitalization errors would also significantly improve the readability of your writing.
See this exact question answered at other band scores — the same prompt compared across bands.
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