Active and Passive Voice: Module Overview
1. Introduction
Every sentence in English that contains a transitive verb — a verb that takes a direct object — can be expressed in one of two ways. It can be expressed in the active voice, where the subject performs the action: Darwin proposed the theory of natural selection. Or it can be expressed in the passive voice, where the subject receives the action: The theory of natural selection was proposed by Darwin. The information conveyed is essentially the same — but the perspective, the emphasis, and the communicative purpose are different.
The passive voice is not, as it is sometimes characterised, a weaker or inferior form of expression. It is a precise and deliberate grammatical choice — one that serves important communicative purposes that the active voice cannot always fulfil. In academic and scientific writing, the passive is indispensable. In journalism, it shapes the way events are reported and responsibility is attributed. In legal and official documents, it carries authority and formality. In everyday speech, it allows speakers to describe situations without knowing or naming the agent.
Understanding the passive voice — when and why to use it, how to form it correctly across all tenses, and how it interacts with modal verbs and reporting verbs — is one of the most important skills for advanced English. This module examines it in full.
2. What This Module Covers
This module contains seven lessons. The first lesson establishes the fundamental distinction between active and passive voice and the reasons for choosing one over the other. Subsequent lessons examine passive formation across all tenses, the use of the passive with modal verbs and reporting verbs, the distinctive get passive, and the most common errors in passive construction and use.
| Lesson | Title | Level |
|---|---|---|
| 1 | Active and Passive — Understanding the Difference | 🟠 Intermediate |
| 2 | Forming the Passive Voice Across Tenses | 🟠 Intermediate |
| 3 | When to Use the Passive Voice | 🟠 Intermediate — 🟣 Upper-Intermediate |
| 4 | The Passive with Modal Verbs | 🟠 Intermediate — 🟣 Upper-Intermediate |
| 5 | The Passive with Reporting Verbs | 🟣 Upper-Intermediate |
| 6 | Get Passives | 🟠 Intermediate |
| 7 | Common Errors with the Passive Voice | 🟠 Intermediate — 🟣 Upper-Intermediate |
3. How the Passive Is Formed — A Preliminary Overview
Before the individual lessons begin, it is useful to establish the basic structural principle of the passive voice — a principle that applies across all tenses and all constructions.
The passive voice is formed with the appropriate tense of be + the past participle of the main verb.
| Active | Passive |
|---|---|
| Scientists discovered hydrothermal vents in 1977. | Hydrothermal vents were discovered by scientists in 1977. |
| The team is analysing the core samples. | The core samples are being analysed by the team. |
| Researchers have identified new species. | New species have been identified by researchers. |
| The committee will publish the report. | The report will be published by the committee. |
In every case, the pattern is the same — be in the appropriate tense + past participle. The by-phrase, which names the agent, is optional — it is included only when the agent is known, relevant, and worth mentioning.
4. The Two Dimensions of Passive Use
The choice between active and passive voice operates along two dimensions that are examined in full in Lesson 3.
The perspective dimension
Active sentences foreground the agent — the person or thing performing the action. Passive sentences foreground the patient — the person or thing receiving or affected by the action.
The information structure dimension
In English, new and important information typically comes at the end of a sentence — a principle known as end focus. The passive allows writers to control what appears at the end of the sentence — and therefore what receives the greatest emphasis.
Scientists discovered hydrothermal vents in 1977. (focus on 1977 — the time of discovery) Hydrothermal vents were discovered by scientists in 1977. (focus on 1977) Hydrothermal vents were discovered in 1977. (focus on the vents — the discovery itself)
5. A Note on Level
This module is pitched at an intermediate to upper-intermediate level. The basic concept of the passive voice is introduced at elementary level — but its full range of uses, its interaction with modal verbs and reporting verbs, and the subtle communicative choices it involves are genuinely upper-intermediate topics. The lessons move progressively from foundation to advanced, and the Usage in Context sections present rules across the full range of levels within this span.
6. Before You Begin
This module assumes a working knowledge of the English tense system as covered in Module 4 — particularly the formation of all twelve tenses — and of modal verbs as covered in Module 5. The passive constructions examined in Lessons 4 and 5 build directly on this knowledge. If you are not yet confident with tense formation or modal verbs, it is worth revisiting the relevant lessons before proceeding to those sections of this module.