1. He has written this novel in easy English. (active)
2. This novel is written in easy English. (passive)
3. This novel has been written in easy English.(passive)
4. He has lost his pen.(active)
5. His pen has been lost by him.(passive)
6. His pen is lost by him.(passive)
7. He has his house painted green.(active)
8. His house has been painted green by him.(passive)
9. His house is painted green by him.(passive)
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Which one is the passive sentence of each active sentence?
Can we use both passive forms? Does each passive voice sentence is different or the same?
First set ...
Since the verb in the active sentence is in the present perfect tense, the verb in the passive sentence should be, too.
~~ He has written this novel in easy English. (active)
~~ This novel has been written by him in easy English.
(Since "He" is the subject in the active sentence, some form of that pronoun needs to be in the passive sentence, too.)
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Now ... how will you correct the other two sets of sentences?
The passive sentences corresponding to the active sentences are as follows:
1. This novel is written in easy English. (passive)
2. This novel is written in easy English. (passive)
3. This novel has been written in easy English. (passive)
4. His pen has been lost by him. (passive)
5. His pen has been lost by him. (passive)
6. His pen is lost by him. (passive)
7. His house has been painted green by him. (passive)
8. His house has been painted green by him. (passive)
9. His house is painted green by him. (passive)
In each case, there is more than one passive form that can be used to describe the same action. The different passive forms may vary slightly in terms of emphasis or nuance, but they convey the same general idea -- that the action was performed on the subject of the active sentence.