German to Czech: sich does not always describe somebody acting on themselves
The German construction decides what the reflexive form contributes
German sich can identify an object that is also the subject, express reciprocal relations, or belong to a verb that requires it. The German treebank documentation distinguishes seeing oneself in a mirror, people kissing one another, and sich beeilen, meaning to hurry. Translating all of these as a literal action on oneself would misrepresent at least two of the constructions.
Czech likewise has several functions for short se and si, but their distribution must follow the Czech verb and case relationship. The Czech documentation distinguishes accusative se from dative si. German third-person sich does not itself expose that target distinction. A translator has to interpret the relationship first rather than choose one permanent Czech replacement for the German spelling.
A Czech reflexive-looking form can describe a passive event
The Czech example oběd se vaří means that lunch is being cooked. It does not require an interpretation in which lunch deliberately cooks itself. This matters when a German source uses a passive construction with werden. The target can contain se while preserving the passive event, rather than adding a new claim that the affected item has become its own actor.
Compare “Someone is cooking lunch” with “Lunch is being cooked.” The source changes which participant is foregrounded without changing the basic cooking event. A Czech passive construction should retain the lunch as the affected item. Interpreting se as an ordinary reflexive object in every case can turn that description into a nonsensical self-directed action. The German presence or absence of sich is therefore not a complete test of whether Czech se belongs in the result.
A required clitic is different from a separately contrastable participant
The Czech resource also illustrates inherently reflexive verbs with smála se, she laughed, and zvykla si, she got used to something. In these constructions, the short forms belong to the verbs’ grammatical pattern. They do not automatically introduce an additional person who is laughed at or an object made accustomed. A German source can express the same general event with a verb whose reflexive behavior differs.
Conversely, where the German sentence genuinely says that someone sees themselves, the identity between viewer and viewed person must survive. Replacing it with another person’s reference would change the event, even if the Czech sentence sounded otherwise natural. Reciprocal German sich with a plural subject is a further possibility: people can see themselves individually or see one another. The subject’s plurality alone does not decide which relation the writer means. Determine whether the source describes self-reference, mutual action, a passive, or a verb-specific grammatical requirement. Then interpret the Czech clitic with its own governing verb and case. This keeps an essential piece of target grammar from being deleted as redundant while preventing a small required form from being expanded into a participant the German writer never mentioned.
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