Select the option that expresses the given sentence in passive voice.
Scientists have recently discovered a new species of marine life in the unexplored depths of the ocean.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. A new species of marine life has recently been discovered in the unexplored depths of the ocean by scientists.
In active voice, the sentence structure is:- Subject: Scientists + Verb: have discovered + Object: a new species of marine life
The general structure for converting to passive voice is: Subject (new subject in passive) + form of 'to be' + past participle of the verb + (by + agent).
In the passive voice, the object of the active sentence becomes the subject of the passive sentence. The object 'a new species of marine life' becomes the subject.
The active voice sentence is in the present perfect tense (have discovered).The conversion in passive voice takes the form: 'Has been discovered' in the present perfect passive form.
The subject 'scientists' is moved to the end and becomes the agent introduced by 'by'.
The object 'a new species of marine life' becomes the subject in the passive voice.
Hence, the correct transformation is:- 'A new species of marine life has recently been discovered in the unexplored depths of the ocean by scientists.'