Каждая иллюстрация проверяется редактором.

From Lesson 209:The passive agent·Russian

Breakdown of Каждая иллюстрация проверяется редактором.

каждый
every
проверять
to check
редактор
editor
иллюстрация
illustration

Questions & Answers about Каждая иллюстрация проверяется редактором.

Why is редактором in the instrumental case?
In Russian passive sentences, the person doing the action (the agent) is put in the instrumental case. Since the editor is the one doing the checking, редактор becomes редактором. This is the exact equivalent of saying "by the editor" in English.
Doesn't the -ся ending in проверяется mean "itself"? Is the illustration checking itself?
Not here! While the -ся ending is often used for reflexive actions (doing something to oneself), it is also the standard way to form the passive voice for imperfective verbs. In this context, проверяется simply means "is checked".
Why use the imperfective verb проверяется instead of a perfective passive form?
The word Каждая (Every) tells us this is a recurring, routine process. In Russian, ongoing or repeated passive actions always use imperfective verbs with the -ся suffix. If this were a single, completed action in the past (like "The illustration was checked"), you would use a perfective short participle instead.
Why does the sentence use каждая instead of все (all)?
Каждая specifically means "each" or "every" single one individually, which pairs with the singular noun иллюстрация and the singular verb проверяется. If you wanted to say "All illustrations are checked", you would use the plural forms: Все иллюстрации проверяются.

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