Breakdown of Для покоя и удобства не нужно делать лишние движения.
и
and
не
not
делать
to do
нужно
it is necessary
Questions & Answers about Для покоя и удобства не нужно делать лишние движения.
Why do we use the imperfective verb делать here instead of the perfective сделать?
This is the core rule for negative obligations! When you want to say that there is no need to do something or you don't have to do it, you use не нужно or не надо followed by an imperfective verb like делать. Using a perfective verb here would sound unnatural and break the rule for expressing a lack of necessity.
Why are покоя and удобства in the genitive case?
They come directly after the preposition для (for), which always requires the genitive case. The dictionary (nominative) forms are the masculine noun покой (peace, quiet, rest) and the neuter noun удобство (comfort, convenience).
What exactly does the adjective лишние mean here?
The adjective лишний translates to extra, unnecessary, or superfluous. In the phrase лишние движения, it refers to wasted effort or movements that serve no purpose, which you should avoid if you want to maintain your peace and comfort.
Why does лишние движения look like it is in the nominative case if it is the direct object of the verb?
It is actually in the accusative case because it receives the action of the verb делать. However, because движение (movement) is an inanimate noun, its accusative plural form is completely identical to its nominative plural form.