Complex passive forms in English : complete course

The complex passive forms in English are structures that go beyond the simple passive voice. They combine the passive with other grammatical elements like modal verbs, perfect tenses, or continuous aspects. These forms allow speakers to express nuance, distance, or uncertainty in a more sophisticated way.

For example, instead of saying ‘Someone built this bridge in 1920’, you can say ‘This bridge is believed to have been built in 1920.’ This small change adds a layer of meaning that makes your English sound more natural and precise.

Simple Examples to Get Started

• Simple passive: ‘The report was written by the manager.’
• Complex passive: ‘The report is said to have been written by the manager.’
• With a modal: ‘The project should have been completed last week.’
• With continuous: ‘The building was being renovated when the accident happened.’

As you can see, complex passive forms often combine several elements: an auxiliary verb, ‘be’, and a past participle. Let us look at each component more closely.

The Key Elements of Complex Passive Forms in English

Complex passive structures are built using different combinations of auxiliary verbs and verb forms. Understanding each part helps you use them correctly and confidently.

1. Modal Verbs in the Passive

You can combine modal verbs like ‘should’, ‘must’, ‘might’, or ‘could’ with the passive. The structure is: modal + be + past participle or modal + have been + past participle for past situations.

• ‘The documents must be signed before Friday.’ (present obligation)
• ‘The email should have been sent yesterday.’ (past obligation not fulfilled)
• ‘The mistake could have been avoided.’ (past possibility)

2. The Perfect Passive

The perfect passive combines ‘have/has/had’ with ‘been’ and a past participle. It is used to talk about completed actions where the focus is on the result, not the doer.

• ‘The homework has been submitted.’ (present perfect passive)
• ‘The letter had been delivered before noon.’ (past perfect passive)
• ‘By next year, the new law will have been approved.’ (future perfect passive)

3. The Continuous Passive

This form uses ‘be + being + past participle’. It describes actions in progress that are passive in nature. It is less common but important for precise communication.

• ‘The road is being repaired.’ (present continuous passive)
• ‘The patients were being treated when the power cut happened.’ (past continuous passive)

Why Complex Passive Forms Matter in English

Using complex passive forms makes your English sound more natural, especially in formal writing, academic texts, and professional communication. They help you do three important things:

• Express distance or objectivity: ‘It is believed that prices will rise’ sounds more neutral than ‘I believe prices will rise.’
• Focus on the action, not the person: ‘The decision has been made’ keeps the focus on the outcome.
• Talk about past situations with precision: ‘The files should have been backed up’ clearly expresses a missed obligation in the past.

These structures appear frequently in newspapers, academic papers, and business communication. Learning them will help you understand and produce sophisticated English texts.

Comparison with Other Languages

If you speak French or Spanish, you may find some similarities with English passive structures, but also key differences.

In French, people often prefer ‘On a décidé’ over ‘Il a été décidé’. In Spanish, ‘Se decidió’ is more natural than the full passive form. English, however, uses the passive far more frequently, especially in formal contexts.

A Full Example in Context

Let us look at a short paragraph using several complex passive forms together. Imagine a news report about a hospital:

‘A new hospital has been built in the city centre. The project was being planned for several years before construction began. Critics argue that the budget should have been approved sooner. It is believed that the hospital will have been opened by the end of the year.’

Notice how each passive form adds a specific layer of time, modality, or perspective. This is the power of complex passive structures in real English.

Key Points to Remember

• Complex passives combine the passive voice with modals, perfect tenses, or continuous forms.
• The core structure is always built around ‘be + past participle’.
• Modal perfect passives (‘should have been done’) are especially useful for talking about past regrets or missed obligations.
• English uses the passive more frequently than French or Spanish in formal writing.
• Practice reading news articles and academic texts to see these forms in action.

Sources

• Quirk, R., Greenbaum, S., Leech, G., and Svartvik, J. (1985). A Comprehensive Grammar of the English Language. Longman.
• Swan, M. (2005). Practical English Usage (3rd ed.). Oxford University Press.
• Biber, D., Johansson, S., Leech, G., Conrad, S., and Finegan, E. (1999). Longman Grammar of Spoken and Written English. Longman.