Band 4.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.5 · IELTS Momentum Workout · 2026-09-30

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 4.5)

the diagram displays how a machanical arm work and how the joints make up the arm function in the same way as such in human arm in diagram a computer is precsion control od moror there are three motors the main motor is conected with computer and one is atttached with shoulder it also called lower arm the pivot that help arm to rotate it the main motor is attached with elbow that allow movent or flexbility it also have wrist that allows gripper to rotate the last motor is conected with gripper which is made for the control build in sensors on the another side the diagram of spray paint,drill holes and weld metal the spary paint is used to spray paint in less time and quickly and the drill is ude to make holles for bullet and screws the last one is weld metal that help in weld the attached the metal

AI examiner evaluation

Task Achievement / Task Response: Band 5.5

The response covers the main features of the diagram, identifying key components such as the computer, motors, base, pivot, shoulder, elbow, wrist, gripper, and alternative end-effectors. However, the student's attempt to explain the functions of the alternative end-effectors ('the spary paint is used to spray paint in less time... and the drill is ude to make holles') relies heavily on outside generalisation rather than strictly reporting the diagram's visual information. The overview is weak, as the response lacks a clear introductory summary of how the mechanical arm operates overall. Despite these shortcomings, all parts of the visual prompt are touched upon, earning a Band 5.5.

Coherence and Cohesion: Band 4.5

The text is written as a single, uninterrupted run-on block paragraph without any punctuation or capitalisation to separate sentences or ideas. This lack of paragraphing and sentence boundaries significantly impedes logical progression and readability. While there are some basic linking devices ('and', 'which', 'on the another side'), referencing is often unclear, such as the pronoun use and stringing clauses together with coordinating conjunctions. Cohesive devices are inadequate and repetitive, making it difficult to follow the flow of information. This level of organisation aligns with a Band 4.5, pulling down the overall coherence of the response.

Lexical Resource: Band 4.5

The vocabulary used is very basic and repetitive, with numerous spelling errors throughout the text (e.g., 'machanical', 'moror', 'conected', 'atttached', 'movent', 'flexbility', 'holles'). There are attempts to use topic-specific terminology derived directly from the diagram, such as 'pivot', 'shoulder', 'elbow', and 'gripper', which shows a minimally adequate range. However, inaccurate word choices and frequent spelling mistakes cause strain for the reader and impede smooth communication at times. The lexical range and accuracy are characteristic of Band 4.5.

Grammatical Range and Accuracy: Band 4.0

The response consists almost entirely of a single, run-on compound sentence joined repeatedly by 'and' with a complete absence of periods, commas, or standard punctuation. There is a very limited range of grammatical structures attempted, and the total lack of sentence boundaries leads to frequent structural errors. Subject-verb agreement and article usage are also problematic (e.g., 'the diagram displays how a machanical arm work', 'is precsion control od moror'). Because the grammatical control is severely undermined by run-on structures and punctuation errors, the response fits the descriptor for Band 4.0.

See this exact question answered at other band scores. The same prompt compared across bands.

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