Euthyphro Passage #1
toioÊtouw is predicate: "whomever they think makes [poieðn] others [êllouw] such [i.e. such as he is, like himself]"
Euthyphro Passage #2
Íp¢r toË toioÊtou = "on behalf of such a person" (i.e. one who has himself committed a murder)
Euthyphro Passage #4
kathgorÆsvn is a future participle of purpose; "he come [in order] to accuse me"
eÞkÒw [§sti] is parallel to Ùry«w §sti; "it is right to...just as it is right/seemly/appropriate to..."