Understanding Active Voice Conversion

The task is to change the given sentence from passive voice to active voice. The original sentence is:
'Geometry is taught to us by Mr. Sam.'

Steps for Active Voice Transformation

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

1. Identify the Components in the Passive Sentence:

• Subject (Passive): The subject receiving the action (Geometry).
• Verb (Passive): The verb phrase, including the form of 'to be' and the past participle (is taught). This indicates the Present Simple Passive tense.
• Agent: The person or thing performing the action, usually found after 'by' (Mr. Sam).
• Objects: Any direct or indirect objects (us).

2. Convert to Active Voice:

• Make the Agent the Subject: The agent of the passive sentence ('Mr. Sam') becomes the subject of the active sentence.
• Change the Verb: Convert the passive verb ('is taught') to its active form. Since the original was Present Simple Passive, the active form must be Present Simple Active. The base verb is 'teach'. For the subject 'Mr. Sam' (third person singular), the Present Simple Active form is 'teaches'.
• Objects: The objects ('us geometry') are placed after the active verb. 'us' is the indirect object and 'geometry' is the direct object.
• Construct the Sentence: Combine the new subject, the active verb, and the objects.

Applying these steps: Mr. Sam (New Subject) + teaches (Active Verb) + us (Indirect Object) + geometry (Direct Object).

Analyzing the Options

• Option 1: Mr. Sam is teaching us geometry. This sentence is in the Present Continuous Active tense. The original passive sentence was in the Present Simple Passive tense. Changing to Present Continuous Active alters the original meaning and tense structure.
• Option 2: Mr. Sam has been teaching us geometry. This sentence is in the Present Perfect Continuous Active tense. This tense does not match the original Present Simple Passive tense.
• Option 3: Mr. Sam will teach us geometry. This sentence is in the Future Simple Active tense. The original sentence implies a general fact or habitual action, not a future event, making this tense unsuitable.
• Option 4: Mr. Sam teaches us geometry. This sentence is in the Present Simple Active tense. The subject 'Mr. Sam' correctly corresponds to the agent in the passive sentence. The verb 'teaches' is the correct Present Simple Active form of 'is taught'. The objects 'us geometry' are correctly placed. This option accurately reflects the original meaning and tense.

Correct Active Form

Based on the analysis, the correct active voice form of the sentence 'Geometry is taught to us by Mr. Sam.' is Mr. Sam teaches us geometry. This conversion correctly shifts the focus from the action's recipient (Geometry) to the performer (Mr. Sam) while maintaining the original tense.