The diagram below shows how a biofuel called ethanol is produced.
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Sample Response
The diagram illustratesdelineates the production of a sustainable biofuel, ethanol. Overall, the diagram illustrates a closed-loop system with 9 essential stages of biofuel production.
The process commences with the growth of plants and trees, which require energy derived from the combination of sunlight and carbon dioxide. After this, the plants and the trees are harvested. The harvested cropAlready harvested product undergoes a pre-processing stagepre-processing stage, where it is crushed into small particles using special machineryusing a modern technology. The following stageFollowing stage includes turning them into cellulosea cellulose. Sugars are extracted from the produced cellulose, and essential microbes are added in order to turn it into ethanolan ethanol.
At the final stage of the process, the produced ethanolproduced ethanol is used for operating various means of transportation, namely cars, trucksvans and even planes. TheirThere constant usage causes the emission of carbon dioxide intoin the air, which is used by naturethe nature to repeatfor completing the same process of ethanol production all over again.
Why this response received Band 7.0
The response effectively provides a clear overview and describes all key stages of the ethanol production process in a logical sequence. The primary limitation is a moderate frequency of minor grammatical errors, such as article misuse and pronoun confusion. To achieve a higher band, focus on refining grammatical accuracy and eliminating minor awkward phrasing.
IELTS Writing Criteria Scores
Task Achievement
The candidate presents a clear overview identifying the cyclical nature of the process and accurately details all key stages illustrated in the diagram.
Ensure all minor descriptive details align strictly with the visual prompt without adding minor unsupported assumptions like modern technology.
Coherence and Cohesion
Information is logically organized into paragraph structure following the sequential flow of the diagram.
Vary cohesive devices slightly more naturally to avoid repetitive transition phrases like at the final stage.
Lexical Resource
A good range of process-related vocabulary is used appropriately to paraphrase key terms from the diagram.
Avoid minor word-choice inaccuracies such as using an ethanol or turning them into a cellulose.
Grammatical Range and Accuracy
A mix of simple and complex sentence structures is attempted, though minor errors in articles and word forms occur frequently.
Proofread carefully to fix article errors like a pre-processing stage and possessive pronoun errors like there instead of their.