Active and Passive Voice

In English grammar, sentences can be structured in two main ways to express the relationship between the subject and the action of the verb. These are the active voice and the passive voice. Understanding the difference and when to use each is crucial for clear and effective communication, especially in formal writing and exams.

Active Voice

In the active voice, the subject of the sentence performs the action of the verb. The sentence structure typically follows Subject + Verb + Object. This voice is generally more direct, concise, and engaging. It emphasizes the doer of the action.

Example: The dog chased the ball.

• Subject: The dog (performs the action)
• Verb: chased
• Object: the ball (receives the action)

Here, 'the dog' is the subject and it is actively performing the action of chasing.

Passive Voice

In the passive voice, the subject of the sentence receives the action of the verb. The focus shifts from the doer of the action to the action itself or the recipient of the action. The sentence structure typically involves a form of the verb 'to be' + past participle of the main verb. The doer of the action, if mentioned, is often introduced by the preposition 'by'. The general structure is Subject (recipient) + form of 'to be' + Past Participle + (by + Agent).

Example: The ball was chased by the dog.

• Subject: The ball (receives the action)
• Verb: was chased (form of 'to be' + past participle)
• Agent: by the dog (the doer of the action)

In this sentence, 'the ball' is the subject, but it is not performing the action; it is being acted upon. The action is 'chasing', and the doer is 'the dog'.

When to Use Passive Voice

The passive voice is useful in several situations:

• When the doer of the action is unknown: My car was stolen last night.
• When the doer of the action is unimportant or obvious: The new bridge will be built next year.
• When you want to emphasize the recipient of the action: The patient was immediately taken to the operating room.
• In scientific or formal writing to maintain objectivity: The samples were analyzed under a microscope.

Converting Active to Passive Voice

To convert a sentence from active to passive voice, follow these steps:

1. Identify the object of the active sentence. This object will become the subject of the passive sentence.
2. Identify the verb in the active sentence. Change it to its past participle form.
3. Add an appropriate form of the auxiliary verb 'to be' before the past participle. The tense of 'to be' must match the tense of the original active verb.
4. If the active sentence has a subject, make it the object of the preposition 'by' and place it at the end of the passive sentence. If the subject is a pronoun, change it to its object form (e.g., I becomes me, he becomes him, she becomes her, they becomes them).

Examples of Conversion by Tense:

Note on Pronouns: When converting pronouns, remember: I -> me, me -> I; you -> you, you -> you; he -> him, him -> he; she -> her, her -> she; it -> it, it -> it; we -> us, us -> we; they -> them, them -> they.

Direct and Indirect Speech

Direct and indirect speech (also known as reported speech) are two ways of reporting what someone has said. Understanding these is vital for accurately conveying conversations and statements.

Direct Speech

Direct speech quotes the exact words spoken by a person. These words are enclosed in quotation marks (" "). The reporting verb (e.g., said, asked, told) is followed by a comma, and the first word inside the quotation marks is capitalized.

Example: She said, "I am going to the market." He asked, "Where are you going?" They exclaimed, "What a beautiful day!"

Indirect Speech (Reported Speech)

Indirect speech reports what someone said without quoting their exact words. Quotation marks are not used. The reporting verb is usually followed by a conjunction like 'that' (for statements), 'if' or 'whether' (for yes/no questions), or an appropriate interrogative word (for Wh- questions). Several changes typically occur when converting from direct to indirect speech.

Example: She said that she was going to the market. He asked where I was going. They exclaimed that it was a beautiful day.

Changes When Converting from Direct to Indirect Speech

When converting direct speech to indirect speech, consider the following changes:

1. Tense Changes (Backshift)

If the reporting verb is in the past tense (e.g., said, asked, told), the tense of the verb in the reported clause usually shifts one step back.

Examples:

• Direct: He said, "I am happy."
• Indirect: He said that he was happy.
• Direct: She said, "I have finished my work."
• Indirect: She said that she had finished her work.
• Direct: They said, "We will go tomorrow."
• Indirect: They said that they would go the next day.

Exception: If the reported statement is a universal truth or a fact that is still true, the tense does not change.

Example: Direct: The teacher said, "The Earth revolves around the Sun." Indirect: The teacher said that the Earth revolves around the Sun.

2. Changes in Pronouns and Possessives

Pronouns and possessive adjectives change according to the context and the speaker.

Example: Direct: He said, "My brother is waiting for me." Indirect: He said that his brother was waiting for him.

Direct: She said, "We are planning our trip." Indirect: She said that they were planning their trip.

3. Changes in Time and Place Expressions

Words indicating proximity in time or place are usually changed to words indicating distance.

Examples:

• Direct: She said, "I will meet you tomorrow."
• Indirect: She said that she would meet me the next day.
• Direct: He said, "I was here an hour ago."
• Indirect: He said that he had been there an hour before.

4. Changes in Questions

When converting questions to indirect speech:

• The reporting verb changes to 'asked', 'inquired', 'questioned', etc.
• For yes/no questions, 'if' or 'whether' is used as the conjunction.
• For Wh- questions (who, what, where, when, why, how), the interrogative word itself acts as the conjunction.
• The word order changes from interrogative to assertive (Subject + Verb).
• Tense, pronoun, and time/place expression changes apply as usual.

Examples:

• Direct: He asked, "Are you feeling well?"
• Indirect: He asked if I was feeling well.
• Direct: She asked, "Where do you live?"
• Indirect: She asked where I lived.
• Direct: They asked, "When did the train arrive?"
• Indirect: They asked when the train had arrived.

5. Changes in Commands and Requests (Imperatives)

For commands and requests, the reporting verb changes to 'told', 'ordered', 'commanded' (for commands) or 'requested', 'advised', 'begged' (for requests). The imperative verb is changed to an infinitive (to + verb).

Examples:

• Direct: The captain said, "March forward!"
• Indirect: The captain ordered them to march forward.
• Direct: She said to him, "Please help me."
• Indirect: She requested him to help her.
• Direct: He said, "Don't waste time."
• Indirect: He advised not to waste time. (Or: He told them not to waste time.)

Prepositions

Prepositions are words that link nouns, pronouns, and phrases to other words in a sentence. They typically show the relationship between a noun or pronoun and another word in terms of location, direction, time, or manner. Common prepositions include 'in', 'on', 'at', 'for', 'to', 'from', 'with', 'by', 'about', 'under', 'over', 'through', etc.

Types of Prepositions and Their Usage

1. Prepositions of Time

These prepositions indicate when an action occurs.

• In: Used for longer periods like months, years, seasons, and parts of the day (except night).
  • Examples: in January, in 2023, in the summer, in the morning, in the afternoon, in the evening.
• On: Used for specific days and dates.
  • Examples: on Monday, on December 25th, on my birthday, on New Year's Day.
• At: Used for specific times of the day, meal times, and holidays.
  • Examples: at 5 PM, at noon, at midnight, at lunchtime, at Christmas, at Easter.
• For: Used to indicate a duration of time.
  • Examples: for three hours, for two weeks, for a long time.
• Since: Used to indicate the starting point of a duration that continues to the present.
  • Examples: since 2010, since morning, since yesterday.
• During: Used to indicate that something happens within a particular period.
  • Examples: during the meeting, during the movie, during the summer holidays.
• Before: Indicates an action happening earlier than a specific time.
  • Examples: before sunset, before 6 PM.
• After: Indicates an action happening later than a specific time.
  • Examples: after lunch, after midnight.
• Until/Till: Indicates the end point of a period.
  • Examples: until tomorrow, till evening.

2. Prepositions of Place

These prepositions indicate where an action occurs or where something is located.

• In: Used for enclosed spaces or larger areas (countries, cities, neighborhoods).
  • Examples: in the box, in the room, in London, in India.
• On: Used for surfaces or specific locations like streets and floors.
  • Examples: on the table, on the wall, on Oxford Street, on the third floor.
• At: Used for specific points or locations.
  • Examples: at the bus stop, at the entrance, at home, at school, at the cinema.
• Under/Below: Indicate a position lower than something else.
  • Examples: under the table, below the surface.
• Over/Above: Indicate a position higher than something else.
  • Examples: over the bridge, above the clouds.
• Beside/Next to: Indicate proximity.
  • Examples: He sat beside me. The shop is next to the bank.
• Between: Indicates a position in the middle of two things.
  • Examples: The house is between the trees.
• Among: Indicates a position within a group of three or more things.
  • Examples: He is popular among his friends.
• Behind: Indicates a position at the back of something.
  • Examples: The car is parked behind the house.
• In front of: Indicates a position at the forward part of something.
  • Examples: There is a garden in front of the house.

3. Prepositions of Direction/Movement

These prepositions indicate the direction or movement towards a place or thing.

• To: Indicates movement towards a destination.
  • Examples: going to the park, sent to her.
• Into: Indicates movement from outside to inside.
  • Examples: walked into the room, poured water into the glass.
• Onto: Indicates movement from one surface to another.
  • Examples: jumped onto the stage, climbed onto the roof.
• From: Indicates the starting point of movement.
  • Examples: came from Paris, received from him.
• Through: Indicates movement from one end to the other of something.
  • Examples: walked through the tunnel, sent through the mail.
• Across: Indicates movement from one side to the other.
  • Examples: swam across the river, walked across the road.
• Up: Indicates movement to a higher position.
  • Examples: climbed up the hill, moved up the stairs.
• Down: Indicates movement to a lower position.
  • Examples: went down the slide, walked down the street.

4. Prepositions of Manner

These prepositions describe how an action is performed.

• By: Often used to indicate the method or means.
  • Examples: by train, by hand, by mistake.
• With: Indicates accompaniment or the instrument used.
  • Examples: with a friend, with a knife, with difficulty.
• Like: Indicates similarity.
  • Examples: He sings like a bird.
• Without: Indicates absence.
  • Examples: without sugar, without help.

5. Prepositions in Phrasal Verbs

Many verbs combine with prepositions (or adverbs) to form phrasal verbs, where the meaning changes significantly.

• Look up: to search for information (e.g., Look up the word in the dictionary).
• Give up: to quit (e.g., Don't give up hope).
• Put off: to postpone (e.g., They put off the meeting).
• Take off: to remove (clothing) or for an aircraft to leave the ground (e.g., Take off your shoes; The plane took off).

6. Prepositions with Adjectives and Verbs

Certain adjectives and verbs are commonly followed by specific prepositions. Memorizing these collocations is important.