IELTS 19 model answer: the process of making ethanol.
The new Cambridge IELTS 19 book is here and there is a process diagram about how ethanol is made. This is a cyclical diagram as the CO2 goes back into the process. You can purchase the Cambridge IELTS 19 practice book online it’s beneficial for home practice.
The best structure to use.
As with all writing task 1 reports, you need an introduction (paraphrase the task) an overview, which briefly covers the main stages, and two main body paragraphs. You don’t need to write a conclusion in task 1. In terms of word count, aim for 150 to 190 words, 200 words or more is far too much.
The task
Source: Cambridge IELTS 19 page 75.
The diagram illustrates the way in which a biofuel called ethanol is created. Overall there are three main stages: harvesting plants and trees, creating cellulose, and adding microbes to sugars to produce ethanol.
In the first stage, plants and trees which have absorbed sunlight and carbon dioxide, are cut down and harvested by tractor. Following this, the fragments are sent to a pre-processing machine which creates strands of cellulose. Once the strands have been created, they are then processed with chemicals where they break down into sugars.
In terms of making ethanol and CO2, as soon as the sugars from the processing stage have been formed, microbes are added in order to make ethanol on a large scale. This biofuel is then ready to be used in cars, trucks, and aeroplanes, which in turn emits carbon dioxide and this then goes back into the atmosphere where the process repeats itself.
152 words
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