Breakdown of Новая структура должна представлять собой прочную основу.
новый
new
должен
must, have to (должен, должна, должны)
себя
oneself (себе: Dat/Prep)
прочный
durable
структура
structure
представлять собой
to constitute, to represent
основа
foundation (basis, core)
Questions & Answers about Новая структура должна представлять собой прочную основу.
Why does this sentence use представлять собой instead of just представлять?
In formal Russian, представлять собой is a fixed phrase meaning "to be," "to constitute," or "to represent in and of itself." If you drop собой (the instrumental form of the reflexive pronoun себя), the verb представлять generally just means "to introduce" (a person to someone), "to submit," or "to imagine."
Why is прочную основу in the Accusative case instead of the Instrumental?
You might be used to formal definition verbs like являться taking the Instrumental case. However, the active verb here is представлять, which is a standard transitive verb requiring a direct object. Therefore, the phrase прочная основа changes to the Accusative case: прочную основу.
Why do we use the short form должна instead of a normal verb for 'must'?
Russian doesn't have a direct modal verb equivalent for "must." Instead, it uses the short-form adjective должен (obliged/bound), which must agree in gender and number with the subject it refers to. Since структура is feminine, we use the feminine singular form должна.
Could I use являться instead of представлять собой in this sentence?
Yes, you could say ...должна являться прочной основой. The overall meaning is very similar, but являться is purely a formal equivalent of "to be" (and requires the Instrumental case). Using представлять собой plus the Accusative case puts slightly more emphasis on what the structure constitutes or the specific form it takes.
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