Understanding Passive Voice

The original sentence is "The charger should be disconnected when the phone is in use." This sentence is in the passive voice. In passive voice, the subject of the sentence receives the action, rather than performing it. Here, "The charger" is the subject, and the action "should be disconnected" is being done to it. The person performing the action is not mentioned.

Converting to Active Voice

To convert a passive voice sentence to active voice, we need to identify the performer of the action and make them the subject of the sentence. The action verb also changes form.

• Passive Structure: Subject + modal verb + be + past participle + (by agent)
• Original Sentence: The charger + should + be + disconnected + (by you/someone).

When the agent (the performer of the action) is implied (like 'you' in commands or instructions), the active voice often takes an imperative form (a command or instruction).

Analyzing the Options for Active Voice

Let's examine each option to see which one correctly converts the passive sentence to active voice:

• Option 1: "Disconnect the charger when the phone is in use."
  • This is an imperative sentence. The implied subject is "You".
  • The action is "Disconnect".
  • The object is "the charger".
  • This structure correctly shifts the focus to the performer ("You") carrying out the action ("Disconnect") on the object ("the charger"). It maintains the original meaning and condition ("when the phone is in use").
• Option 2: "Keep the charger connected to use the phone."
  • This sentence changes the meaning completely. It suggests keeping the charger connected, which is the opposite of the original instruction.
• Option 3: "The phone should be disconnected when the charger is in use."
  • This sentence is still in the passive voice ("should be disconnected").
  • It also swaps the roles of the charger and the phone, changing the context.
• Option 4: "Use the phone only when the charger is connected."
  • This option also alters the original meaning and condition. It focuses on when the phone can be used, not when the charger should be disconnected.

Selecting the Correct Active Voice Form

Option 1 is the only choice that accurately converts the passive voice sentence into a clear, concise active voice instruction. It uses the imperative mood, making the command direct and understandable, while preserving the original intent and context of the sentence.