Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-08

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 illustrates the steps for synthesis of ethanol which is a biofuel.

Overall, it consists on six major steps. Carbon dioxide and soalr energy play a vital role during its synthesis. suagrs and micobes addition are its intermediate steps.

Moving to the details, sunlight and carbon dioxide are its source of energy. This energy utilized by plants for their growth. After growing these are harvested by farmers. Moreover, the harvesting plant material is shifted to machine for pre processing. The plants change into cellulose which is further goes into chemical process. After using multiple chemicals it is converted into suagr molecules. Furthermore, in the sugar the micobes are added. These micobes alterted the sugar into ethanol. This ethanol used as a fuel in transport industry such as, vehicles and air plane. The carbon dioxide is emitted from the vehicles and changed into carbon dioxide and recycled in biofuel production as source of energy.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You cover the main stages from plant growth through harvesting, processing, sugar conversion and ethanol use, and you identify the carbon-dioxide cycle in your overview. This gives the response a relevant, broadly complete account of the process. The overview is less precise when it calls the process “six major steps,” since the diagram presents a longer sequence, and the description of the final cycle could be clearer: carbon dioxide from the car, truck and aeroplane returns to support plant growth. Some details are also unclear or unsupported, such as saying “multiple chemicals” are used; the diagram only labels processing. To strengthen the response, summarise the cycle accurately and distinguish the labelled stages without adding assumptions.

Coherence and Cohesion: Band 6.5

The response has a recognisable structure: an introduction, an overview and a paragraph describing the stages in sequence. Connectors such as “After,” “Moreover” and “Furthermore” help signal progression, and the reader can generally follow the process from plants to ethanol and transport. However, some links feel mechanical or do not express the relationship precisely, while “This energy” and “these” have somewhat unclear references. The final sentence also repeats carbon dioxide and makes the recycling relationship difficult to follow. Use fewer, more exact transitions and make each stage’s input and output explicit. A clearer paragraph progression and more precise referencing would make the organisation more fluent.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvested,” “pre-processing,” “cellulose,” “sugar” and “ethanol,” so the topic is generally understandable. There are also attempts at more technical wording, such as “synthesis” and “intermediate steps.” However, several spelling errors—“soalr,” “suagrs,” “micobes” and “suagr”—are noticeable, and some word choices or collocations are imprecise: “synthesis” is less suitable than “production” here, and “alterted the sugar” does not clearly describe conversion. “Changed into carbon dioxide” is also inaccurate in meaning. Aim for accurate process verbs and standard spelling, and avoid adding vague phrases such as “multiple chemicals” when the diagram does not specify them.

Grammatical Range and Accuracy: Band 5.0

You attempt a mixture of simple and longer sentences, including sequencing clauses such as “After growing these are harvested by farmers” and “After using multiple chemicals it is converted…”. The overall meaning is usually recoverable, but grammatical control is uneven. For example, “it consists on six major steps” has an incorrect preposition and structure; “This energy utilized by plants” is missing a verb; and “which is further goes” combines incompatible verb forms. There are also problems with articles and sentence construction in “This ethanol used as a fuel.” Work on complete clauses, consistent verb forms and accurate passive constructions, which are useful for describing a process. More reliable sentence patterns would make the sequence easier to understand.

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