IELTS Writing Task 1 process diagram: using the passive voice correctly
Learn how to use the passive voice and sequencing words in IELTS Writing Task 1 process diagrams, with examples and common errors.
By English Grader study guides · AI-assisted educational content · Official sources linked below
The short answer
Most man-made processes are best described in the present simple passive: 'The clay is shaped and then fired.'
Why the passive
In a manufacturing process, what happens matters more than who does it, so the passive is natural. Natural cycles (like the water cycle) often use the active voice.
Related guide: Full process diagram guide
Forms to use
Combine passive verbs with sequencing.
- is/are + past participle: is heated, are sorted
- after being + past participle: after being washed
- once / after which / at the next stage
- is then transported to…
Try a process question →Example
First, the beans are harvested and dried. After being roasted, they are ground and finally packaged for sale.
Common errors
Watch for these.
- 'is heat' → is heated
- Using the passive for natural cycles
- Repeating 'then' in every sentence
Practise
Write a process report and check the grammar feedback.
Get Writing Task 1 feedback →Put this into practice
Choose a process question from the Writing Task 1 bank, write your report and get feedback on grammar.
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Official sources and further reading
Practice examples and study routines are illustrative advice, not official band-scored answers or predictions of exam questions.