Band 4.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.0 · IELTS Momentum Workout · 2026-09-04

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)

This mechanical arm is using for human's day to day life and very helpful. The function of the above mechanical arm is likely human arm. In most cases the mechanical arm consider as a replacement high human need and very safe method. For an instance when considering huge construction, it require many labourer but if we use the mechanical arm, it can reduce the number of labourer and ensure the safety of the working environment. The negative advantage of the mechanical arm is it consumes more power and we can't operate without power but in when considering human arm we can operate during the power shutdown times. Moreover human have the intelligence to use according to the situation but mechanical arm, we to give the prompt according to the situation otherwise it won't react. And also human have emotions but mechanical arm doesn't have therefore emotional situation won't affect the working environment.

AI examiner evaluation

Task Achievement / Task Response — Band 3.0

The response fails to address the core requirement of the task, which is to summarise the information presented in the diagram. Instead of describing the mechanical arm's joints, structure, or how it mimics human movement, the text provides a general, subjective discussion about the advantages and disadvantages of robotics in the workplace. The prompt specifically asks for a summary of the provided visual data, but the student has ignored the diagram entirely, offering instead a personal opinion piece. Consequently, the response does not meet the requirements of an Academic Task 1 report, as it lacks any data description or comparison of the features shown.

Coherence and Cohesion — Band 4.0

The response is written as a single paragraph, which lacks logical progression or clear structure. While there are some attempts at cohesive devices such as 'Moreover' and 'For an instance', these are used incorrectly or in a way that does not help the flow of ideas. The transition between sentences is often abrupt, and the lack of paragraphing makes the text difficult to follow. The ideas are not organised in a way that reflects the structure of a report, and the overall arrangement is disjointed, failing to guide the reader through the information effectively.

Lexical Resource — Band 4.0

The vocabulary is very limited and repetitive, relying on basic terms like 'mechanical arm', 'human arm', and 'working environment'. There are several instances of awkward word choice and incorrect collocations, such as 'negative advantage' (which is a contradiction) and 'we to give the prompt'. The student struggles to use precise terminology related to the topic, and the language is generally informal and simplistic. There is no attempt to use less common vocabulary or demonstrate a range of lexical items suitable for an academic report.

Grammatical Range and Accuracy — Band 4.0

The response contains frequent grammatical errors that often impede communication. There are persistent issues with subject-verb agreement ('mechanical arm consider', 'it require'), article usage ('the mechanical arm is using for human's day to day life'), and sentence structure. Many sentences are poorly constructed, such as 'the mechanical arm, we to give the prompt', which lacks a clear grammatical link. The range of structures is very limited, consisting mostly of simple sentences with errors in basic syntax and punctuation. These errors are systematic and significantly affect the clarity of the writing.

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