Questions & Answers about Ég hef mikinn tíma í dag.
Hef is the 1st person singular present tense of the verb að hafa (to have).
So:
- ég hef = I have
- þú hefur = you have
- hann/hún/það hefur = he/she/it has
In this sentence, ég hef is simply the normal way to say I have.
Because tími is the direct object of hef, and after að hafa the direct object is usually in the accusative case.
The basic dictionary form is:
- mikill tími = much time / a lot of time in the nominative
But in this sentence, the object has to be accusative:
- mikinn tíma
Both the adjective and the noun change form:
- mikill → mikinn
- tími → tíma
So this is an example of adjective + noun agreement in gender, number, and case.