Band 4.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.0 · IELTS Momentum Workout · 2026-08-22

IELTS Writing Task 1 question

The diagram below shows how a mechanical arm works, and how the joints that make up the arm function in the same way as those in a human arm. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Student answer (Band 4.0)

So the computer contorls the motors tell's each motor in which direction and how much movement those motors needs to do. In this mechnical arm we have 3 motors each motor has to perform it's onw part/responsabilty. The motor at the elbow allows move the arm with flexibility. Other motor that is used at wrist allow to have stronger grip and helps rotate 360 degree. The Motor which is acting as the shoulder of the arm which is on the base that helps to move it up and down. and there's a pivot that enables the rotation of the arm from the base. All these three motor completes the this mechanical arm without these this cannot move or rotate like a human arm and not able to lift anything. after assembling all the parts of it. It need's to have some color on it for that we can use the paint sepray gun.

AI examiner evaluation

Task Achievement / Task Response — Band 4.0

The response fails to adopt an appropriate academic tone or structure for a report. While you identify the three motors, the description is informal and lacks a clear overview of the process. You have included irrelevant information, such as the mention of a 'paint spray gun,' which is not part of the mechanical arm's functional diagram. The summary of the mechanical arm's operation is fragmented, and you do not effectively compare the mechanical components to human anatomy as requested by the prompt. To improve, focus on describing the mechanical process objectively and ensure all information is derived directly from the provided diagram.

Coherence and Cohesion — Band 4.0

The response lacks paragraphing, which makes it difficult to follow the progression of ideas. There is a lack of cohesive devices to link sentences; instead, the text relies on simple, repetitive sentence structures. Referencing is often unclear, such as in the phrase 'All these three motor completes the this mechanical arm,' where the grammar and logical flow are significantly disrupted. To improve, you should organize your report into clear paragraphs—an introduction, a body paragraph for the main features, and a concluding overview—and use linking words like 'furthermore,' 'consequently,' or 'in contrast' to connect your ideas.

Lexical Resource — Band 4.0

The vocabulary is basic and contains several spelling errors, such as 'contorls,' 'mechnical,' 'onw,' 'responsabilty,' and 'sepray.' The word choice is often imprecise or informal, such as 'perform it's onw part' and 'have some color on it.' There is no attempt to use technical or precise terminology related to mechanical engineering or anatomical comparisons. To reach a higher band, you need to expand your vocabulary to include more precise descriptive terms and ensure that you proofread your work to eliminate basic spelling and word-form errors.

Grammatical Range and Accuracy — Band 4.0

The response contains frequent grammatical errors that impede clarity. There are significant issues with subject-verb agreement ('motor... tell's,' 'motors needs,' 'It need's'), incorrect punctuation, and sentence fragments. The sentence structure is consistently simple, and attempts at more complex sentences result in errors, such as 'The Motor which is acting as the shoulder of the arm which is on the base that helps to move it up and down.' You need to focus on mastering basic sentence construction, specifically subject-verb agreement and the correct use of articles and prepositions, before attempting more complex structures.

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