Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-25

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 6.0)

The diagram iluustrates, the process of producing ethanol from plants and trees. This is seven-stage process. First of all the plants and trees grow by gaining energy from sunlight and carbon dioxide. The process of producing the ethanol begins with the harvesting. Initially plants and trees are harvested, and then they are transported to factory for pre processing. Here these plants and trees are passed through a machine which converts them into cellulose, after pre processing. Following this step cellulose are than transffered into a lab here they are processed into sugars. After the processing, microbes are added into the sugars. In this way ethanol is produced. Once ethanol is produced, it is then ready to use into vehicles as fuel. Ethanol can be used into cars, trucks and even in eoroplane. When cars, trucks and aeroplans use ethanol, they emit carbon dioxide into the air. This carbon dioxide is then used into the growth of plants and trees.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You cover the main stages from plant growth and harvesting through processing, the addition of microbes, and the use of ethanol in transport. You also correctly describe carbon dioxide returning to support plant growth, capturing the diagram’s cyclical feature. However, the overview is not clearly separated from the step-by-step account, and calling it a “seven-stage process” is inaccurate: the diagram includes more stages and also shows ethanol being used by three transport types. Some details are unclear or not shown, such as saying the plants are transported to a factory and that a machine converts them into cellulose. A clearer overview and more precise reporting of the labelled stages would make the account more complete.

Coherence and Cohesion: Band 6.0

The sequence is generally easy to follow, with time and sequence markers such as “First of all,” “Initially,” and “Following this step.” The account also moves from plant growth to fuel use and then back to carbon dioxide, reflecting the cycle. However, the response is presented as one continuous paragraph, so the overview and process details are not clearly distinguished. Some linking is mechanical or repetitive, particularly the repeated use of “then” and “After.” References such as “Here” and “In this way” are understandable but do not always identify the stage precisely. Grouping the cycle overview separately from the production stages, and using clearer links between stages, would improve progression.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvesting,” “cellulose,” “microbes,” and “carbon dioxide,” which helps communicate the subject. There is also some variety in expressions for sequence and production. However, several word-choice and spelling problems reduce precision: “use into vehicles as fuel” and “used into the growth” are unnatural, while “eoroplane,” “aeroplans,” “iluustrates,” and “transffered” are misspelled. “Factory” and “lab” are also not labels in the diagram, and “lab” is too informal for this report. Aim for accurate process collocations and consistent formal vocabulary; this would make the description clearer and more controlled.

Grammatical Range and Accuracy: Band 5.5

The response includes both simple sentences and some longer structures, such as “When cars, trucks and aeroplans use ethanol, they emit carbon dioxide into the air.” Most of the process remains understandable, but some grammatical errors recur. For example, “This is seven-stage process” needs an article, and “cellulose are than transferred” has a subject–verb agreement problem; cellulose is treated as singular or uncountable. The sentence “they are transported to factory” also lacks an article, while “ready to use into vehicles” has an incorrect grammatical pattern. Check articles, agreement, and verb-plus-preposition structures, and proofread punctuation around introductory phrases to improve accuracy.

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