Questions & Answers about Ég geri þetta fyrir þig.
Because gera is the infinitive, meaning to do / to make.
In Ég geri þetta fyrir þig, the verb is conjugated for 1st person singular present tense:
- ég geri = I do / I am doing
- að gera = to do
This is an irregular present-tense form, so you have to learn it as part of the verb’s pattern.
A few present-tense forms of gera are:
- ég geri = I do
- þú gerir = you do
- hann/hún/það gerir = he/she/it does
Here is the role of each word:
- Ég = subject, I
- geri = verb, do / am doing
- þetta = direct object, this
- fyrir þig = prepositional phrase, for you
So the structure is:
subject + verb + object + prepositional phrase
That is a very common Icelandic sentence pattern.