Band 4.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.5 · Cambridge IELTS 14 · 2026-10-14

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 4.5)

The diagram shows that who electricity is generated in a hydroelectric power station.

As we khown that every country have made dam for storing water for making electricity,When the water of river entered in dam the water became stroted. Then it entered in power station, the diagram shows that intake of water is open in dams and at night the door of dams have been closed. The flow of water entered to generater which make electricity in day time.After this water goes through reversible turbines which works day and night.At day time in power station the generater starts and due to high speed of water when generater starts the electricity moved through power lines and then into national grid.However, when water goes through reversible turbines at day time it operate the generator and at night these turbines pump water into high- level reservoir. This process repeats at and night, due to this process the electricity is generated in a hydroelectric power station.

AI examiner evaluation

Task Achievement / Task Response: Band 4.0

You identify the subject and mention several relevant components, including the dam, intake, power station, turbines, generator and national grid. You also recognise the key day/night contrast: water drives generation during the day, while the turbines pump it back at night. However, the account is only minimally developed and includes inaccurate sequencing: it says water enters the power station before describing the turbines, and suggests the generator starts because of the water’s “high speed.” The overview of the complete cycle is unclear, and some details are repeated rather than accurately explaining the stages. The response is 146 words, four words below the 150-word minimum; the 16 words copied from the prompt are excluded. A clearer, accurate account of the full cycle would strengthen task coverage.

Coherence and Cohesion: Band 4.0

There is a basic attempt to move through the process in sequence, using markers such as “Then,” “After this,” and “However,” and the final sentence tries to summarise the cycle. Nevertheless, the ideas are not arranged coherently enough: the description shifts between the daytime flow, the generator, and the turbines, then returns to day and night operation. This makes the order of stages difficult to follow. Several sentences are joined into a single block, with little punctuation or paragraphing to separate the overview from the details. Some linking is also repetitive or confusing, particularly “This process repeats at and night.” Organise the response into a brief overview and a clearly ordered description of daytime generation followed by nighttime pumping.

Lexical Resource: Band 5.0

You use some relevant process vocabulary, including “reversible turbines,” “power lines,” “national grid,” and “high-level reservoir,” so the reader can identify the main equipment. However, the range is limited and several word choices or collocations are inaccurate, sometimes making the process harder to understand. For example, “the water became stroted” does not clearly express that water is stored, while “the electricity moved through power lines” is less natural than saying it is transmitted. “Door of dams” is also an imprecise label for the intake. Spelling errors such as “khown,” “generater,” and “stroted” are noticeable. Build a more precise set of process verbs and check spelling, especially for key technical terms.

Grammatical Range and Accuracy: Band 4.5

The response attempts some longer sentences and uses time clauses, for example, “when the water of river entered in dam,” as well as a contrast introduced by “However.” However, grammatical control is weak and errors are frequent, sometimes obscuring relationships between stages. Examples include “every country have made dam,” which has agreement and article problems, and “the flow of water entered to generater,” which has an incorrect verb pattern and missing article. Tense and sentence construction are also inconsistent in “the electricity moved through power lines and then into national grid.” Punctuation is unreliable, with missing spaces after commas and several ideas run together. Practise accurate simple process sentences first, then combine them using correctly formed time clauses and consistent present simple verbs.

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