Band 4.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 4.0 · Cambridge IELTS 14 · 2026-08-23
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 diagram below illustrates how to generated electricity in a hydroelectric power station.
Overall, the diagram consists of 5 main stages. This is a linear process where showing how to generate hydroelectric power station .
At the first river water is going on dam high level reserviour after that the high level reserviour opened on day and closed on night . Next flow of water of generate electricity on day and flow of water during pumping at night .
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 4.0 |
| Coherence and Cohesion | 4.0 |
| Lexical Resource | 4.0 |
| Grammatical Range and Accuracy | 4.0 |
| Overall | 4.0 |
Task Achievement / Task Response — Band 4.0
The response fails to meet the minimum word count requirement of 150 words, reaching only 79 words. Consequently, the task is only partially addressed. The summary of the main features is underdeveloped, and the description of the process is fragmented and lacks the necessary detail to explain the hydroelectric generation cycle effectively. The response does not provide a clear overview of the process, and the information provided is insufficient to meet the requirements of an Academic Task 1 report.
Coherence and Cohesion — Band 4.0
The response lacks logical progression and clear paragraphing. While there is an attempt to use sequencing words like 'at the first' and 'next', these are used inaccurately. The sentences are disjointed, making it difficult for the reader to follow the stages of the process. The lack of sufficient content prevents the development of a coherent structure, and the overall organization is weak.
Lexical Resource — Band 4.0
The vocabulary is very limited and repetitive, relying on basic terms like 'water', 'day', and 'night'. There are significant issues with word choice and collocation, such as 'going on dam high level reserviour' and 'opened on day'. The range of vocabulary is insufficient to describe a technical process, and the errors in word formation and usage frequently impede the clarity of the message.
Grammatical Range and Accuracy — Band 4.0
The grammatical range is extremely limited, consisting mostly of simple, error-prone sentences. There are frequent errors in basic grammar, such as 'how to generated electricity' (incorrect verb form), 'river water is going on dam' (missing articles and incorrect preposition), and 'flow of water of generate' (incorrect structure). Punctuation is also inconsistent. The high frequency of errors makes the text difficult to read and understand.
See this exact question answered at other band scores — the same prompt compared across bands.
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