Band 6.0 IELTS Writing Task 1 Model Answer

Overall Band Score: 6.0 · Cambridge IELTS 19 · 2026-11-11

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)

This diagram shows the process of the production of ethanol aslo known as biofuel. This process begins when plants and trees grows by getting energy from sunlight and receiving carbon dioxide. Afterwards, farmers and workers harvest them and then by using heavy machinery and vehicles such as tractors or trucks transport them to a factory or place where these harvested plants are pre prcessed and become cellulose which is a raw material for ethanol. Then, cellulose is moved to next step where it processed again and after this processing it converts to sugars which is the second last step of making ethanol. At last, microbes which are microscopic bacterias are added to the sugars which take some time and then convert sugars to ethanol. In this way , ethanol is made. Moreover, this is a circular process where ethanol is made from plants and used in vehicles and airplanes for fuel purposes which emits carbon dioxide. As we know, carbon dioxide is crucial for the growth and the development of plants.

AI examiner evaluation

Task Achievement / Task Response: Band 6.0

You describe the main sequence from plant growth and harvesting through pre-processing, cellulose, processing, sugars and the addition of microbes to produce ethanol. You also identify the diagram’s key overall feature: it is a cycle in which carbon dioxide from fuel use returns to support plant growth. These points make the response relevant and cover the process. However, some details are less fully or precisely reported: the diagram shows ethanol being used by a car, truck and aeroplane, while your account refers more generally to vehicles and airplanes, and it does not clearly explain that carbon dioxide is released by all three modes of transport. The added claim that microbes “take some time” is not shown. A more complete, neutral account of the labelled stages would strengthen the summary.

Coherence and Cohesion: Band 6.0

The stages are presented in a generally logical order, and sequencing expressions such as “Afterwards,” “Then,” and “At last” help the reader follow the process. The final sentences also connect ethanol use with the return of carbon dioxide to plant growth, giving the response an overall sense of completion. However, the answer is presented as one long paragraph, and several stages are packed into extended sentences, making the progression less easy to scan. Some links are mechanical, particularly the repeated use of “then” and “after.” The reference in “which take some time” is also not fully clear. Grouping the description into an opening overview and a clearly staged account, with more varied transitions, would make cohesion more controlled.

Lexical Resource: Band 6.0

You use an adequate range of process vocabulary, including “harvest,” “raw material,” “cellulose,” “microbes,” and “carbon dioxide,” which allows you to describe the main stages. Some less common terms are attempted, though a few choices are inaccurate or informal for a process report. For example, “bacterias” is not the correct plural form, and “place where these harvested plants are pre processed” is less precise than a concise technical description. There are also spelling errors such as “aslo” and “prcessed,” and “made” is repeated where more specific process verbs could be used. Aim for accurate spelling and collocations, and choose terms that describe the diagram without adding unsupported detail.

Grammatical Range and Accuracy: Band 5.5

You attempt both simple and complex sentences, including clauses beginning with “when,” “where,” and “which,” and the overall meaning remains understandable. However, some errors in agreement, verb forms and sentence construction reduce accuracy. For example, “plants and trees grows” should use a plural verb, while “where it processed again” needs an auxiliary verb (“where it is processed”). In “microbes … are added to the sugars which take some time and then convert,” the relative clause has an unclear reference and does not form a clear grammatical description of the stage. The long sentence beginning “Afterwards” also joins several actions without consistently controlled structure. Use a wider mix of shorter, complete sentences and check subject–verb agreement and auxiliary verbs.

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