Simple Passive (Present and Past)

The passive voice focuses on the action or the person/thing affected, rather than who does it. This is useful in formal writing and reports, and when the doer (the agent, e.g., by the chef) is unknown or unimportant. It is also common in everyday English: My bike was stolen.

1. What the Passive Voice Shows

Quick rule: be (is/are/was/were) + past participle → is cleaned / are cleaned / was cleaned / were cleaned.

In an active sentence, the subject does the action:

• “The chef cooks the meal.” → chef = subject, cooks = verb, meal = object

In a passive sentence, the object of the active sentence becomes the subject:

• “The meal is cooked by the chef.” → meal = subject, focus on what happens to it

Key idea: The passive focuses on the action or result, not the doer.

How to change active → passive:

Note: You can make a passive when the active verb has an object. Many intransitive verbs (e.g., arrive, happen) cannot be passive.

1. Move the object to subject position.
2. Choose be in the same tense as the active verb (is/are; was/were).
3. Use the past participle.
4. Add by + agent only if needed.

2. Forming the Simple Passive

Present Simple Passive

Structure: subject + is/are + past participle

• Singular subject → is
• Plural subject → are

Examples:

• “The room is cleaned every day.”
• “Letters are delivered in the morning.”

Past Simple Passive

Structure: subject + was/were + past participle

• Singular subject → was
• Plural subject → were

Examples:

• “The room was cleaned yesterday.”
• “The letters were delivered last week.”

3. When to Use the Passive

Use the passive voice when:

1. The action is more important than the doer. Example: The bridge was built in 1990. (Who built it is not important.)
2. The doer is unknown. Example: The window was broken last night.
3. You want to sound formal. Example: The rules are explained at the beginning of the course.

Tip: We often omit the ‘by …’ phrase (the agent). Add by + agent only when it is important.

For example, “The painting was stolen by a famous art thief.”

4. Active vs Passive: Simple Comparison

Active (Present):

• “The teacher corrects the homework.” → focus on who does it

Passive (Present):

• “The homework is corrected by the teacher.” → focus on the homework, the action

Active (Past):

• “The company launched the product last year.”

Passive (Past):

• “The product was launched last year.”

5. Time Expressions with Passive

Present passive: often used with words like:

• every day, usually, always, often, sometimes
  • “The office is cleaned every day.”

Past passive: often used with:

• yesterday, last week, in 2020, two days ago
  • “The documents were signed yesterday.”

6. Practice Tips

1. Identify the object in active sentences → it becomes the subject in passive.
2. Choose the correct form of “be” → is/are for present, was/were for past.
3. Use the past participle of the main verb.

Examples to change from active to passive:

• Active: “Someone delivers the mail every morning.”
• Passive: “The mail is delivered every morning.”
• Active: “The workers repaired the road last week.”
• Passive: “The road was repaired last week.”

7. Key Takeaways

• Passive voice shifts focus from the doer to the action or object.
• Form: Present → is / are + past participle; Past → was / were + past participle
• Use passive when:
  • The action matters more than who did it
  • The doer is unknown
  • You want a formal tone
• Time expressions help decide present or past passive.