Band 6.0 IELTS Writing Task 1 Model Answer

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

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 flow diagram illustrates the production of ethanol and usage in different vehicls.

Overall, the producation of ethanol consist of seven steps and divided it to two phases. The first phase includes the harvesting, pre-processing and the resultant is cellulose. The second phase consist of processing and then producing sugar and adding microbes the output is Ethanol.

So in the first phase plants gets energy which is the combination of sunlight and carbon dioxide. When plants and trees are grows up. The second step the harvesting take place and then pre-process it so the resultant material is cellulose.

In the second phase after processing the cellulose we get the suger. After this step we add the microbes and obtain the Ethanol and then use it different type of transport system such as cars, trucks and aeroplane. The releasing gas from these vehicles carbon dioxide which is combined with sunlight and the plants and trees gets energy.

AI examiner evaluation

Task Achievement / Task Response: Band 6.5

You identify the main stages from plant growth through processing, sugar production and the addition of microbes, and you also mention the transport uses and the return of carbon dioxide. The overview recognises two broad phases, which gives the account a useful organising idea. However, the claim that production “consist of seven steps” is not clearly supported, and the cycle is not fully explained: carbon dioxide from vehicles returns to the plants, while sunlight is an energy input rather than something combined with the released gas. Some stages are also compressed, so the role of cellulose and the conversion to sugars are not described precisely. To strengthen the response, report the full cycle accurately and distinguish the inputs, processing stages and outputs more clearly.

Coherence and Cohesion: Band 6.0

The response has a clear overall arrangement: an introduction, an overview, and paragraphs describing the two phases and subsequent use of ethanol. Sequencing expressions such as “Overall,” “So,” “The second step,” and “After this step” help the reader follow the process. However, the division into phases is somewhat mechanical, and some links between ideas are unclear. For example, “the resultant is cellulose” is followed by a new paragraph beginning “In the second phase,” without a smooth explanation of how the material moves into processing. The final sentence also joins the vehicle emissions and plant growth in a confusing way. Use more precise links to show each transition and make the cycle’s return stage explicit.

Lexical Resource: Band 5.5

You use relevant process vocabulary, including “harvesting,” “pre-processing,” “cellulose,” “processing,” and “microbes,” and terms such as “production” and “transport system” suit the topic. This gives you enough vocabulary to communicate the main stages. However, several spelling and word-choice errors reduce precision, including “vehicls,” “produaction,” “suger,” and “releasing gas.” Some phrases are also unnatural, such as “use it different type of transport system” and “plants gets energy.” Aim for accurate forms and more natural process collocations, for example, “the ethanol is used as fuel in several types of transport” and “carbon dioxide is released by the vehicles.”

Grammatical Range and Accuracy: Band 5.0

You attempt both simple and more complex sentence forms, and the sequence is generally understandable. However, errors in agreement, verb forms, articles and sentence construction are frequent enough to make some relationships unclear. Examples include “the production … consist,” “plants gets,” and “plants and trees are grows up”; these need forms such as “consists,” “plants get,” and “plants and trees grow.” The sentence “The second step the harvesting take place” lacks a clear grammatical structure, while “adding microbes the output is Ethanol” needs a connector or a full stop. Practise building complete clauses and checking subject–verb agreement, tense and articles. More accurate control of these basics would make your process description easier to follow.

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