Band 4.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 4.5 · Cambridge IELTS 19 · 2026-10-01

IELTS Writing Task 1 question

 

The diagram below shows how a biofuel called ethanol is produced.

Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

Student answer (Band 4.5)

the diagram illustrate how a biofuel named ethanol is made

overall the energy made throgh in industry processing inolving and made ethnaol

in this process sunligh and carbon diooxide which plants and tree grow and after harvesting pre processing cellulose where made after that it where prosess in the machine and made up sugar microbes added and ethanol where made and used by cars and other transport like car trock leve carbon dioxide in the air in the given diagram we see trees and plants are major raw material for using ethanol after that the harvesting it went to another process called pre processing mean reached To factory in the factory it break down to small pieces called cellulose reached to diffrent tube and in the tube process it heat up and other neccesory acton were made

in conclosion the plants and tress grow and it made by diffrent method small partical cellulose and then transfer into sugar and microbes added and ethanol made

AI examiner evaluation

Task Achievement / Task Response: Band 5.0

The response addresses the task only partially. While the student attempts to describe the process of ethanol production shown in the diagram, the information is presented in a very confused and limited manner. The writing outlines some key steps such as the growth of plants, harvesting, pre-processing into cellulose, and the addition of microbes to create ethanol, but the overall presentation lacks a clear overview or a structured summary of the main features. Ideas are underdeveloped and the continuous flow of the cycle is largely obscured by inadequate expression and a lack of clear sequencing between the various stages of the process.

Coherence and Cohesion: Band 4.5

Information and ideas are not arranged coherently in this response. There is a complete lack of paragraphing, with the entire text presented as a single, dense block. Cohesive devices are largely absent or misused, resulting in run-on sentences that make it difficult for the reader to follow any logical progression. Phrases such as 'after that it where prosess' and 'in conclosion' are mechanically applied and fail to guide the reader through the stages of the diagram smoothly, leading to disjointed and confusing transitions between ideas.

Lexical Resource: Band 4.5

The vocabulary used is very limited and repetitive, reflecting a basic control of language. There are numerous noticeable errors in word choice, spelling, and word formation, such as 'throgh' for through, 'inolving' for involving, 'sunligh' for sunlight, 'diooxide' for dioxide, and 'conclosion' for conclusion. These errors cause considerable strain for the reader and impede clear communication. The student attempts to use some topic-specific terms from the prompt, such as 'cellulose', 'microbes', and 'ethanol', but overall the lexical range is inadequate for a higher band.

Grammatical Range and Accuracy: Band 4.0

Grammatical control is weak, featuring a very limited range of structures and frequent errors. Simple sentences are often incorrectly structured, and attempts at complex forms break down completely, as seen in 'in this process sunligh and carbon diooxide which plants and tree grow and after harvesting pre processing cellulose where made'. There are persistent errors in verb forms, active and passive voice, subject-verb agreement, and a total absence of punctuation (such as periods and capital letters), which frequently causes difficulty and confusion for the reader.

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

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