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Object–Subject Transformation

Introduction

Object-Subject Transformation Active और Passive Voice conversion की foundation है। यह सिखाती है कि वाक्य का फोकस doer of the action (subject) से receiver of the action (object) की तरफ कैसे बदला जाता है। यह pattern grammar-based questions में बहुत इस्तेमाल होता है और sentence variety तथा precision improve करने में मदद करता है।

Pattern: Object–Subject Transformation

Pattern

Passive voice में, active sentence का object passive sentence का subject बन जाता है।

Verb form बदलकर "be + past participle" हो जाता है और original subject को "by" के साथ introduce किया जाता है।

Formula:
Active: Subject + Verb + Object
Passive: Object + be + Verb (V3) + by + Subject

Step-by-Step Example

Question

Convert the following active sentence into passive voice:
The teacher teaches English.

Options:
A. English is taught by the teacher.
B. English was taught by the teacher.
C. English will be taught by the teacher.
D. English has been taught by the teacher.

Solution

  1. Step 1: Sentence के parts पहचानें।

    Subject = The teacher, Verb = teaches, Object = English.

  2. Step 2: Object को शुरुआत में लाएँ।

    New Subject = English.

  3. Step 3: Verb form बदलें।

    "teaches" (present simple) → "is taught" (be + past participle).

  4. Step 4: Agent जोड़ें (by + original subject)।

    → by the teacher.

  5. Final Answer:

    English is taught by the teacher. → Option A.

  6. Quick Check:

    फोकस “teacher” (doer) से “English” (receiver) पर shift हो जाता है। ✅

Quick Variations

1. Tenses बदलने पर form भी बदलता है (e.g., “teaches” → “was taught”, “will teach” → “will be taught”).

2. Pronouns वाले sentences: He helps me → I am helped by him.

3. जिन sentences में object नहीं होता, उन्हें passive में convert नहीं किया जा सकता (e.g., He sleeps.).

Trick to Always Use

  • Step 1: Object ढूँढें - वही नया subject बनेगा।
  • Step 2: Verb को “be + past participle” में बदलें।
  • Step 3: “by + original subject” जोड़ें।
  • Step 4: Tense को सही तरह adjust करें (is/was/will be/etc.)।

Summary

Summary

इस Object-Subject Transformation pattern में:

  • Object नया subject बन जाता है।
  • Verb का form be + past participle हो जाता है।
  • Original subject “by” के साथ आता है।
  • सिर्फ transitive verbs (जिनके साथ object होता है) passive voice बना सकते हैं।

Practice

(1/5)
1. Convert into passive voice:<br>He writes a letter.
easy
A. A letter is written by him.
B. A letter was written by him.
C. A letter will be written by him.
D. A letter has been written by him.

Solution

  1. Step 1: Identify the sentence parts.

    Subject = He; Verb = writes; Object = a letter.

  2. Step 2: Move the object to the beginning.

    New subject = A letter.

  3. Step 3: Change the verb form.

    ‘writes’ (present simple) → ‘is written’ (is + past participle).

  4. Step 4: Add the agent.

    → by him.

  5. Final Answer:

    A letter is written by him. → Option A.

  6. Quick Check:

    Present simple passive uses ‘is + V3’ and the focus shifts to the object. ✅
Hint: Present simple → is/am/are + past participle.
Common Mistakes: Using ‘was written’ instead of ‘is written’ for present tense.
2. Choose the correct passive form:<br>The manager approved the proposal.
easy
A. The proposal is approved by the manager.
B. The proposal was approved by the manager.
C. The proposal will be approved by the manager.
D. The proposal has been approved by the manager.

Solution

  1. Step 1: Identify tense and parts.

    Verb ‘approved’ = past simple; Subject = the manager; Object = the proposal.

  2. Step 2: Move object to front.

    Object = The proposal → new subject.

  3. Step 3: Apply passive rule.

    Past simple → was/were + past participle → was approved.

  4. Step 4: Add agent.

    → by the manager.

  5. Final Answer:

    The proposal was approved by the manager. → Option B.

  6. Quick Check:

    Past simple passive correctly uses ‘was approved’. ✅
Hint: Past simple → was/were + past participle.
Common Mistakes: Using present auxiliary ‘is’ instead of ‘was’.
3. Identify the correct passive voice:<br>The chef prepared the meal.
easy
A. The meal was prepared by the chef.
B. The meal has been prepared by the chef.
C. The meal will be prepared by the chef.
D. The meal is prepared by the chef.

Solution

  1. Step 1: Identify the tense.

    ‘Prepared’ = past simple; Subject = the chef; Object = the meal.

  2. Step 2: Move object to subject position.

    Object = The meal → new subject.

  3. Step 3: Change the verb form.

    Past simple → was/were + past participle → was prepared.

  4. Step 4: Add agent.

    → by the chef.

  5. Final Answer:

    The meal was prepared by the chef. → Option A.

  6. Quick Check:

    Past action correctly uses ‘was prepared’. ✅
Hint: Past simple → was/were + past participle.
Common Mistakes: Choosing a future or present form instead of past passive.
4. Change into passive voice:<br>The police have caught the thief.
medium
A. The thief is caught by the police.
B. The thief was caught by the police.
C. The thief will be caught by the police.
D. The thief has been caught by the police.

Solution

  1. Step 1: Identify tense and parts.

    ‘Have caught’ = present perfect; Subject = the police; Object = the thief.

  2. Step 2: Move object to subject place.

    New subject = The thief.

  3. Step 3: Apply passive rule.

    Present perfect → has/have been + past participle → has been caught.

  4. Step 4: Add agent.

    → by the police.

  5. Final Answer:

    The thief has been caught by the police. → Option D.

  6. Quick Check:

    Present perfect passive uses ‘has/have been + V3’ - correct here. ✅
Hint: Present perfect → has/have been + past participle.
Common Mistakes: Using past simple (‘was caught’) instead of present perfect passive when original is ‘have/has + V3’.
5. Select the correct passive sentence:<br>The company is launching a new product.
medium
A. A new product was launched by the company.
B. A new product is launched by the company.
C. A new product is being launched by the company.
D. A new product has been launched by the company.

Solution

  1. Step 1: Identify tense.

    ‘Is launching’ = present continuous; Subject = the company; Object = a new product.

  2. Step 2: Move object first.

    Object = a new product → becomes subject.

  3. Step 3: Change verb.

    Present continuous → is/am/are being + past participle → is being launched.

  4. Step 4: Add agent.

    → by the company.

  5. Final Answer:

    A new product is being launched by the company. → Option C.

  6. Quick Check:

    Continuous passive requires ‘being + V3’ - correct here. ✅
Hint: Present continuous → is/am/are being + past participle.
Common Mistakes: Omitting ‘being’ in continuous passive forms.

Mock Test

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