For an Informed Love of God
Bill Mounce
15. Cases: Nominative, Vocative, Accusative
Cases are much more flexible than you might assume from your studies so far. They are used in many situations other than what we have discussed.
In the second edition of Greek for the Rest of Us, this material is covered in chapters 11 and 27. Our discussion of cases is split between this chapter (nominative and accusative) and the next chapter (dative and genitive).