Question

A doctor should examine him. (Choose the correct passive voice)

• A. He should be examined by a doctor
• B. A doctor must examine him
• C. Examined he must be by a doctor
• D. Doctor should be examining him

Hint:

In passive voice with modals like “should, must, can, may,” always use “be” + past participle form of the verb.

Answer 1

The Correct Option is A

Step 1: Recall the rule of passive voice.
In passive voice, the object of the active sentence becomes the subject of the passive sentence, and the subject is placed after “by.”
The structure is: Active Voice: Subject + Modal + Verb (base form) + Object
Passive Voice: Object + Modal + be + Past Participle + by + Subject
Step 2: Apply the rule to the given sentence.
Active voice: “A doctor should examine him.”
Here, “A doctor” = Subject, “should examine” = Verb phrase, and “him” = Object.
Passive voice: Object (“him”) comes first → “He should be examined by a doctor.”
Step 3: Analyze the options.
- (a) He should be examined by a doctor: Correct and grammatically perfect.
- (b) A doctor must examine him: Still in active voice, not transformed.
- (c) Examined he must be by a doctor: Incorrect word order.
- (d) Doctor should be examining him: Continuous form, not correct passive construction.
Step 4: Conclusion.
The correct passive form is: “He should be examined by a doctor.”