Questions & Answers about Ég hoppa ekki eins hátt og hún.
Eins ... og is the Icelandic pattern for as ... as in comparisons.
So:
- eins hátt og hún = as high as she
- ekki eins hátt og hún = not as high as she
This is a very common structure:
- eins stór og = as big as
- eins fljótt og = as quickly as
- eins góður og = as good as
In your sentence, it compares how high I jump with how high she jumps.
In a simple main clause, Icelandic usually places the finite verb early in the sentence, and ekki often comes right after it.
So:
- Ég hoppa ekki ... = I do not jump ...
That word order is very natural in Icelandic.
Compare:
English uses do not, but Icelandic usually just uses ekki with the verb form itself.