to contribute
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to contribute to
To do one's part toward a shared goal, result, or whole; to make a contribution.
Jeder Einzelne kann etwas zum Schutz der Umwelt beitragen.
Every individual can contribute something to protecting the environment.
'Beitragen' (to contribute) is a separable verb. The prefix 'bei-' comes at the end in a main clause. In subordinate clauses and in the infinitive with 'zu', the verb stays together.
Jeder Mitarbeiter trägt etwas zum Erfolg bei.
Every employee contributes something to success.
The verb 'beitragen' (to contribute) is always used with the preposition 'zu', which requires the dative. The structure is: etwas zu etwas (Dativ) beitragen (to contribute something to something).
Regelmäßige Bewegung trägt zur Gesundheit bei.
Regular exercise contributes to health.
Common combinations describe contributing to a positive goal, for example 'zum Erfolg beitragen' (to contribute to success), 'zur Verbesserung beitragen' (to contribute to improvement), or 'einen Beitrag leisten' (to make a contribution).
Ihre Spende trägt zur Erhaltung des alten Gebäudes bei.
Your donation contributes to the preservation of the old building.
to help
'helfen' and 'beitragen' both have to do with support. 'helfen' is more direct: you help a person with a task, or a remedy helps with a problem. 'beitragen' means that someone or something contributes a part to a larger goal or result. It does not have to directly support one individual person. In everyday language, 'helfen' sounds more personal and concrete. 'beitragen' fits better when several things together make a result possible.
Viele kleine Spenden tragen zu dem neuen Spielplatz im Viertel bei.
Many small donations contribute to the new playground in the neighborhood.
Meine Mutter hilft der Nachbarin beim Tragen der schweren Taschen.
My mother helps the neighbor carry the heavy bags.