1. Lesson Overview
In this lesson, you will learn:
- What voice means
- Structure of active voice
- Structure of passive voice
- Subject vs object shift
- When to use passive
Voice refers to the relationship between the subject and the action.
2. Active Voice
Structure
Subject + verb + object
Scientists conducted the experiment.
She wrote the report.
The subject performs the action.
3. Passive Voice
Structure
Object + be + past participle (V3) + (by + subject)
The experiment was conducted (by scientists).
The report was written (by her).
The object becomes the focus.
4. Step-by-Step Transformation
Active:
Scientists discovered a new planet.
Step 1: Identify object → a new planet
Step 2: Move object to subject position
Step 3: Add the correct form of “be”
Step 4: Add past participle
Step 5 (optional): Add “by + subject”
Passive:
A new planet was discovered by scientists.
5. Tense Consistency Rule
The tense must remain the same.
Present Simple:
Scientists conduct experiments.
Experiments are conducted by scientists.
Past Simple:
Scientists conducted experiments.
Experiments were conducted by scientists.
6. When Passive Is Used
A. When the doer is unknown
The window was broken.
B. When the doer is unimportant
The results were published yesterday.
C. In academic/scientific writing
The data were analyzed carefully.
Focus on action, not actor.
7. Important Rules
- Only transitive verbs can form a passive.
(Verb must have an object.)
Cannot convert:
She sleeps. (no object)
- Use the correct “be” form.
- Use past participle (V3).
6. Common Mistakes Spotlight
⚠ Wrong tense
Incorrect: The report is write.
Correct: The report is written.
⚠ Forgetting “be”
Incorrect: The report written.
Correct: The report was written.
⚠ Using V2 instead of V3
Incorrect: The experiment was did.
Correct: The experiment was conducted.
9. End of Lesson Mastery
✅You should now be able to:
✅Identify active and passive voice
✅Convert simple sentences
✅Maintain tense consistency
✅Use passive voice appropriately