Band 5.5 IELTS Writing Task 1 Model Answer

Overall Band Score: 5.5 · Cambridge IELTS 19 · 2026-10-09

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 5.5)

The given diagram demonstrates the production of biofuel which is also called ethanol

Overall,it can be witnessed that production of ethanol is quite lenghty process the ethanol come from plants and trees passing through various steps ethanol is produced which is use in cars,aeroplanes and trucks and relase in the form of carbon-dioxide into atmosphere

To initiate with,farmer harvest the plants and trees which passes through machines and produce cellulose.After that,cellulose brings to laboratory where many chemicals are added to produce sugar which is look like a ring form,Moreover,microbes are added in sugars which produce a sweet taste mixture called ethanol.

Furthermore,that particular chemical use as a fuel in many cars,trucks as well as aeroplanes.It work as a fuel in every vehicles.After that,the ethanol consumed and emitted in the form of carbon-dioxide in environment which than again utilized by plants and trees.overall it is a cycling process

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You identify the process as a cycle and mention the main inputs and outputs: plants are harvested, ethanol is used by vehicles, and carbon dioxide returns to plants. However, some stages are inaccurately described or omitted. The diagram shows pre-processing producing cellulose, followed by processing that produces sugars; it does not show chemicals being added in a laboratory or sugars having a ring shape. The overview also says ethanol is released into the atmosphere, when it is the vehicles that release carbon dioxide after using the fuel. The response is three words below the required minimum. To strengthen the summary, report the stages in order and describe the carbon-dioxide loop precisely.

Coherence and Cohesion: Band 6.0

The response has a recognisable overall structure: an introduction, an overview, and two paragraphs describing the production and use of ethanol. Sequencing phrases such as “To initiate with” and “After that” help the reader follow the process, and the final sentence returns to the cycle. However, some links are mechanical or unclear. For example, “Furthermore, that particular chemical use as a fuel” does not clearly connect the production stages to the transport stage, and “After that” is repeated. The overview is also a long sentence that combines several points. Use clearer paragraph-level progression and refer explicitly to each stage, while varying linking expressions and keeping each sentence focused.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvest,” “cellulose,” “microbes,” “ethanol,” and “carbon-dioxide,” which allows you to cover the topic. There are also attempts at more descriptive wording, such as “cycling process.” However, several choices are inaccurate or unnatural for this diagram: “laboratory” and “chemicals” are not shown, “sweet taste mixture” is not an appropriate description of ethanol, and “relase” and “lenghty” contain spelling errors. Some phrases are also imprecise, including “machines” for the pre-processing stage and “utilized by plants” for carbon dioxide being absorbed. Aim for accurate process terms and natural collocations rather than adding unsupported detail.

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and more complex sentences, including a relative clause in “which passes through machines” and a sequence of stages joined with “After that.” The main meaning is generally recoverable, but some grammatical errors make relationships between stages less clear. For example, “farmer harvest the plants and trees which passes” has problems with articles, agreement, and the relative clause; “cellulose brings to laboratory” is missing a passive verb and articles; and “It work as a fuel” has subject–verb disagreement. Sentence boundaries and commas are also inconsistent, particularly in the overview. Practise accurate passive forms for process descriptions, subject–verb agreement, and punctuation, while retaining a mix of sentence structures.

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