Questions & Answers about Hundurinn beit mig, þetta var óhapp.
Why doesn't the verb "beit" have a past tense ending like "-di" or "-aði"?
Beit is the simple past tense of the strong verb bíta (to bite). Instead of adding a past tense ending like weak verbs do, strong verbs change their core vowel to show the past tense. Here, the í in bíta changes to ei in the past tense singular, becoming beit (bit).
Is "var" also a strong verb?
Var (was) is the past tense singular of vera (to be). While vera is highly irregular overall, var behaves exactly like a strong verb because it changes its vowel and does not use a past-tense suffix. In the singular, it is exactly the same for first and third person: ég var (I was) and það var (it was).
Why is "mig" used here instead of "mér"?
The verb bíta (to bite) governs the accusative case for the person or thing being bitten. Mig is the accusative form of ég (I). If the verb required the dative case, you would see mér, but here the dog's action directly affects you in the accusative.
Why do we use "þetta" for "this" instead of "þessi"?
Þetta is the neuter singular form of the demonstrative pronoun for "this". Even though it is not pointing at a specific neuter noun, Icelandic always uses the neuter form when referring to a general situation, an event, or an abstract concept—in this case, the entire incident of the dog biting you.