4 John wrote the essay.

Original Sentence:

John wrote the essay.

Analysis:

The original sentence is in the Past Simple tense. The subject is 'John', the verb is 'wrote', and the object is 'the essay'.

Passive Sentence Construction:

• Object: The essay
• Verb (Past Simple Passive): was written
• Original Subject: by John

Passive Sentence:

The essay was written by John.

Tense of the Passive Sentence:

The tense of the passive sentence is Past Simple.