1. Lesson Overview
In this lesson, you will learn when passive voice is appropriate and effective.
Although active voice is often clearer and more direct, passive voice is widely used in formal, academic, and scientific writing.
Passive voice allows writers to:
-
emphasise the action or result
-
avoid mentioning the person responsible
-
maintain a neutral and objective tone
Example:
The samples were analysed carefully.
Here the focus is on the process, not the researcher.
Understanding when to use passive voice helps writers choose the most effective sentence structure.
By the end of this lesson, you will be able to:
-
recognise situations where passive voice is preferred
-
understand how passive voice contributes to objectivity in academic writing
-
identify when active voice is clearer
-
choose between active and passive constructions effectively
2. Concept Introduction
Consider the following sentences:
Active:
The researcher analysed the samples.
Passive:
The samples were analysed.
Both sentences describe the same action, but they emphasise different elements.
| Sentence | Voice | Focus |
|---|---|---|
| The researcher analysed the samples. | active | the researcher |
| The samples were analysed. | passive | the samples |
The passive sentence emphasises the action or result rather than the person performing it.
3. Core Explanation
Passive voice is used when the focus of the sentence should be the action, result, or process rather than the agent.
Several contexts favour passive constructions.
When the Doer Is Unknown
Sometimes the person performing the action is unknown or irrelevant.
Example:
The equipment was damaged during the experiment.
The sentence focuses on the event, not the person responsible.
When the Doer Is Unimportant
Example:
The road was repaired last week.
The identity of the repair workers is not important.
When the Focus Is the Result
Example:
The results were published in a scientific journal.
The emphasis is on the publication, not the researcher.
In Formal and Academic Writing
Scientific writing often avoids personal references.
Example:
The samples were analysed using specialised equipment.
This structure keeps the focus on the procedure.
4. Rule Table
Situations Where Passive Voice Is Preferred
| Situation | Example |
|---|---|
| unknown agent | The equipment was damaged. |
| unimportant agent | The road was repaired yesterday. |
| focus on result | The results were published recently. |
| scientific description | The samples were analysed in the laboratory. |
Situations Where Active Voice Is Better
| Situation | Example |
|---|---|
| emphasising responsibility | The technician repaired the system. |
| giving instructions | Turn off the machine. |
| clear storytelling | The engineer designed the system. |
5. Usage
1. Describing processes
Example:
The samples are heated to a specific temperature.
2. Reporting research findings
Example:
The data were collected from multiple locations.
3. Presenting results
Example:
The results were recorded carefully.
4. Avoiding personal reference
Example:
The experiment was conducted under controlled conditions.
5. Emphasising outcomes
Example:
The new system was installed successfully.
6. Signal Words
Certain expressions commonly appear in contexts where passive voice is preferred.
| Expression | Example |
|---|---|
| in the study | The data were collected in the study. |
| during the experiment | The samples were tested during the experiment. |
| in the report | The results were described in the report. |
| recently | The findings were published recently. |
| according to the study | The results were analysed according to the study. |
These expressions often appear in academic and research writing.
7. Special Cases
Passive Voice in Scientific Procedures
Scientific writing frequently uses passive constructions to emphasise procedures and methods.
Example:
The solution was heated to 80°C.
This style keeps the description objective and impersonal.
Passive Voice in News Reports
News reporting sometimes uses passive voice to focus on events rather than individuals.
Example:
The new policy was announced yesterday.
8. Additional Notes
While passive voice is useful, overusing it can make writing unclear or indirect.
Example:
Passive:
The report was written by the researcher.
Active:
The researcher wrote the report.
In many contexts, active voice is clearer and easier to understand.
Good writing often uses a balance of active and passive structures.
9. Common Errors
⚠ Overusing passive voice
Incorrect (awkward):
The report was written by the researcher and was submitted by the researcher yesterday.
Better:
The researcher wrote the report and submitted it yesterday.
Explanation:
Active voice is often more concise and clearer.
⚠ Using passive without clear meaning
Incorrect:
The problem was occurred yesterday.
Correct:
The problem occurred yesterday.
Explanation:
Some verbs cannot form passive voice.
⚠ Missing auxiliary verb
Incorrect:
The samples analysed yesterday.
Correct:
The samples were analysed yesterday.
Explanation:
Passive voice requires a form of “be.”
⚠ Incorrect past participle
Incorrect:
The report was wrote last week.
Correct:
The report was written last week.
Explanation:
Passive verbs require the past participle.
⚠ Unnecessary passive construction
Incorrect:
The experiment was conducted by the researcher carefully.
Better:
The researcher conducted the experiment carefully.
Explanation:
Active voice may be clearer when the agent is important.
10. Lesson Mastery
After completing this lesson, you should now be able to:
✅ recognise situations where passive voice is preferred
✅ understand how passive voice creates objectivity in academic writing
✅ identify when active voice is clearer and more effective
✅ choose between active and passive constructions appropriately