Breakdown of Ein Beitrag im Internet ist interessant.
sein
to be
in
in
dem
the; (masculine or neuter, dative)
interessant
interesting
das Internet
the internet
der Beitrag
the post
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Questions & Answers about Ein Beitrag im Internet ist interessant.
Why is the indefinite article ein used with Beitrag instead of the definite article der?
Because you are talking about “a contribution/post” in general, not a specific one. Beitrag is masculine (der Beitrag), so the indefinite article in the nominative case is ein. If you meant a particular post you’d say der Beitrag.
How do I know that Beitrag is masculine?
German nouns have grammatical gender. You can learn this by:
• Checking a dictionary (it will list “der Beitrag”).
• Memorizing nouns with their article (der, die, das).
• Noting patterns (many “-ig” and “-ling” nouns are masculine, though there are exceptions).
What case is Ein Beitrag in, and why?
It’s in the nominative case because it’s the subject of the sentence (it performs the action of “being interesting”). Subjects in German take the nominative.
Why is im Internet used here? What case and preposition rules are at work?
• im is a contraction of in dem.
• The preposition in with a static location (where something is) demands the dative case.
• dem Internet → im Internet means “in the Internet” (i.e. “on the Internet”).
Could I say ins Internet instead of im Internet?
You could say ins Internet (in + das = ins) only if you imply movement into the Internet (e.g. “I’m diving into the net!”). For the usual “on the Internet” meaning you use im (static location).
Why isn’t the adjective interessant given an ending like interessante?
When an adjective follows a form of sein (to be) as a predicate adjective, it remains uninflected. So you say ist interessant, not ist interessante.
If I want to make the sentence plural, what changes?
• Ein Beitrag → Beiträge (no article or you could use einige Beiträge).
• ist → sind (third-person plural of sein).
Example: Beiträge im Internet sind interessant.
What word order rule explains why ist comes after Ein Beitrag im Internet?
German main clauses follow the V2 rule: the finite verb (here ist) must be in the second position. Anything you put first (subject, adverb, object) is counted as position one.