Full passive participle with agent

This construction is a hallmark of advanced, formal Russian (книжный стиль). It allows for high information density by turning a relative clause into a single adjectival modifier.

1. Structure:
The construction consists of two main parts:

• A past passive participle (ending in -нный, -енный, -ённый, or -тый) or a present passive participle (ending in -емый, -имый, or the rare -омый).
• An agent in the bare instrumental case.

2. Transitivity and Aspect:
Passive participles are generally formed from transitive verbs (verbs that take a direct object in the accusative case). However, there are a few exceptions of intransitive verbs that govern the instrumental or dative case (e.g., руководить -> руководимый, управлять -> управляемый, угрожать -> угрожаемый). Furthermore, past passive participles are primarily formed from perfective verbs, though a well-established group of imperfective verbs also forms them (e.g., читанный, виденный, слышанный). Present passive participles are formed from imperfective verbs. Be aware that many common imperfective transitive verbs (such as писать, бить, пить, петь) simply do not have a present passive participle form at all. Note that there are no future tense participles in Russian.

3. Agreement and Word Order:
The participle acts as an adjective and must agree in gender, number, and case with the head noun (the object being described), NOT the agent in the instrumental case. Within the participial phrase itself, the instrumental agent typically directly follows the participle (e.g., написанная [кем?] автором).

4. Punctuation:
When the participial phrase (participial phrase) comes after the head noun, it must be set off by commas. If it comes before the head noun, it is generally not set off by commas. Exception: A participial phrase must be set off by commas, even when placed before the noun, if the head noun is a personal pronoun (e.g., Увлечённый работой, он не заметил времени) or if the phrase carries an adverbial meaning of cause or concession.

5. Register and Transformation:
Common in academic and literary texts, this is rarely used in casual speech. In conversation, Russians prefer using который. For example, the participial phrase статья, читаемая студентом (the article being read by the student) transforms into the active clause статья, которую читает студент (the article which the student is reading).

6. Agent vs. Means and Full vs. Short Forms:
The instrumental agent represents the 'doer'. This can be a conscious entity (e.g., автором - by the author) or an inanimate force/natural phenomenon (e.g., ветром - by the wind). This is distinct from the instrumental of means, which represents the tool used (e.g., карандашом - with a pencil). Note that this exact same instrumental agent pattern is also used with short passive participles. However, it is crucial to contrast their syntactic roles: full forms act as adjectival modifiers within a clause (e.g., книга, написанная автором - the book written by the author), whereas short forms act as the predicate of a passive sentence (e.g., Книга написана автором - The book is written by the author).

7. The Reflexive Alternative:
Modern Russian frequently bypasses clunky present passive participles by using an active participle with the reflexive suffix -ся alongside an instrumental agent. This is especially common for imperfective verbs that lack a standard present passive participle (e.g., Дом, строящийся рабочими - The house being built by the workers).

8. Relative Tense and Aspectual Meaning:
The tense of a participle is relative to the main verb of the sentence, not the absolute time of speaking. Crucially, present passive participles indicate an action concurrent with the main verb, while past passive participles indicate a completed action. For example, читаемая студентом книга (the book currently being read) shows concurrent action, whereas прочитанная студентом книга (the book that was read) shows a completed action. Similarly, in Я смотрел на дом, возводимый рабочими (I was looking at the house being built by the workers), the present passive participle indicates that the building action was happening at the same time as the looking, even though the main verb is in the past tense.