Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-10-20

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 process diagram illustrate how a biofuel called ethanol is produced and used in a cyclical process.

Overall, The proess contain seven main stages, starting with growing and haevesting crops, as followed by the processing, ethanol production, and finally its consumption by vechicals, which release carbon dioxide back into the atmosphere.

first, plants and trees grow by absorbing energy in the form of sunlight and carbon dioxide. once fully grown, they are harvested using heavy machinery. Next, the harvested crops go through a pre-processing stage to prepare them for conversion, turning them in to cellulose.

Following this, cellulose under goes a processing phase in factory, when it is converted in to suger. Microbes are them added to these suger to turn them in to ethanol. Finally the produced ethanol is used to fuel various mode of transpotation,such as cars, trucks, and aeroplane. As these vehicels operates,they emit carbon dioxide backinto the air, which is then reabsorbe by plants and trees, repating the cycle.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

The response covers the main stages and gives a clear overall account of the cycle, including plant growth, harvesting, conversion to ethanol, its use in transport, and carbon dioxide returning to plants. The overview identifies the process as cyclical, and the sequence from pre-processing through cellulose, sugars, and microbes is mostly accurate. This is a solid account of the task, but some details are less fully explained: for example, the diagram shows ethanol being used by three specific transport modes, while the description could clarify that carbon dioxide is released by these vehicles and feeds back into plant growth. The phrase “seven main stages” is also not clearly reconciled with the full sequence shown. More precise coverage of the cycle’s links would strengthen the summary.

Coherence and Cohesion: Band 6.5

The response is arranged in a sensible order, moving from an overview to the early production stages and then to processing, fuel use, and the cycle’s return. Sequencing expressions such as “first,” “Next,” “Following this,” and “Finally” help the reader follow the process. The paragraphing is appropriate, and the final sentence effectively connects emissions back to plant growth. However, some linking is mechanical, and the opening of the final paragraph combines several stages in a long sequence. The reference in “these suger” is understandable but could be clearer by repeating “the sugars.” More varied transitions and clearer links between each input and output would make cohesion more flexible and precise.

Lexical Resource: Band 5.5

The response uses relevant process vocabulary, including “pre-processing,” “cellulose,” “microbes,” and “carbon dioxide,” and it attempts to describe the cycle with terms such as “absorbing” and “emit.” This gives the account an adequate range for the topic. However, spelling errors are noticeable, including “proess,” “haevesting,” “vechicals,” “suger,” and “transpotation,” and several word choices or forms are inaccurate, such as “various mode” and “reabsorbe.” These slips reduce precision and sometimes make the prose less fluent, even though the intended meaning is generally recoverable. Aim for accurate spelling and more natural process collocations, such as “converted into sugars” and “vehicles release carbon dioxide.”

Grammatical Range and Accuracy: Band 5.5

There is some variety in sentence structure, including a relative clause (“which release carbon dioxide”) and time clauses such as “once fully grown.” Most stages remain understandable, and the response attempts to connect actions in complex sentences. However, errors in agreement, verb forms, articles, and sentence boundaries are evident. For example, “The process diagram illustrate” needs subject–verb agreement, while “these vehicels operates” has a plural subject with a singular verb. “In factory” needs an article, and “as followed by” is not a correct grammatical construction. Capitalisation after full stops is also inconsistent. These errors do not generally prevent understanding, but more reliable control of basic forms and punctuation is needed alongside the complex structures.

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

Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.