Band 4.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.5 · IELTS Momentum Workout · 2026-09-12

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 illustration demonstrates that how a machinaries part works in addition the connectors that create the arm working in the similar type as those in sophomer's different parts of hand. Weather it is spray paint, drill holes or weld metal,they all work commonly.

Overall, it is clearly described that starting with computer which manage further work via individual parts of machine. That are explain as human hand mechanisams.

First of all, computer which also explained as braine system. Therefore it can controll accurately their motors. Those motors elaborate in various three parts that named elbow, gripper, shoulder, pivot which are movable and stick on base.

Those all individual parts have their own characteristics. Elbow generally work for movment and flexibility which is middle part of arm, whereas wrist and gripper used as hand fingers to control force, built in sensors. while shoulders command to raise or down the hand. which is crucial on working on principle

AI examiner evaluation

Task Achievement / Task Response — Band 5.0

The response attempts to summarize the provided diagram showing how a mechanical arm works and its similarities to a human arm. However, the coverage of the main features is superficial and incomplete. For instance, the text mentions parts like the computer, motors, elbow, gripper, shoulder, and pivot, but it fails to adequately report the detailed mechanism or make clear, structured comparisons between the mechanical components and human arm joints as requested by the prompt. Key relationships shown in the diagram are glossed over or left unclear due to poor expression, resulting in an underdeveloped response that only partially satisfies the task requirements, aligning with a band 5.

Coherence and Cohesion — Band 4.0

The response is divided into short paragraphs, attempting an overall structure with an introduction and body paragraphs. However, logical progression is severely hindered by awkward phrasing, abrupt transitions, and poor referencing. For example, phrases like 'First of all, computer which also explained as braine system' fail to connect smoothly to the preceding text. Cohesive devices are either missing, inadequate, or inaccurate, making the flow disjointed. Paragraphing is attempted but internal cohesion within sentences and paragraphs lacks clarity, leading to an overall arrangement that falls into band 4.

Lexical Resource — Band 4.0

The vocabulary used is very basic, repetitive, and often inaccurate, severely impeding the transmission of ideas. There are numerous word-choice and spelling errors throughout the text, such as 'machinaries' instead of machinery, 'sophomer's' instead of similar or human parts, and 'braine' instead of brain. Attempts to use less common vocabulary fail due to incorrect collocations and forms, such as 'mechanisams' and 'weather' instead of whether. Because these errors strain the reader and reflect a very limited vocabulary range, the lexical resource is characteristic of a band 4.

Grammatical Range and Accuracy — Band 4.0

Grammatical control is weak, with a very limited range of structures and frequent, heavy errors that frequently distort meaning. Sentences are often incomplete or malformed, such as 'The illustration demonstrates that how a machinaries part works in addition the connectors that create the arm working in the similar type...' There are persistent errors in verb tenses, subject-verb agreement, relative clauses, and punctuation throughout the text. Complex sentence attempts are heavily flawed and cause significant difficulty for the reader, placing the response firmly at band 4.

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

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