Questions & Answers about Ég einbeiti mér í kennslustund.
Mér is the dative form of ég (I), while mig is the accusative form.
The verb að einbeita sér (to concentrate, to focus) always takes its object in the dative case. So with ég as the subject, you must use the dative pronoun:
- Nominative: ég (I) – subject
- Accusative: mig (me) – direct object
- Dative: mér (to me / for me) – what einbeita sér requires
- Genitive: mín (of me)
Because einbeita sér governs the dative, ég einbeiti mér is correct, but ég einbeiti mig is wrong.
In Icelandic, einbeita is normally used as a reflexive verb: að einbeita sér – literally “to concentrate oneself”.
That pattern means a pronoun is required:
- Ég einbeiti mér. – I concentrate (myself).
- Þú einbeitir þér. – You concentrate (yourself).
- Hann einbeitir sér. – He concentrates (himself).
Leaving out the pronoun (Ég einbeiti) sounds incomplete or wrong to native speakers. The reflexive pronoun is part of the normal structure of the verb.