From The Cat in the Hat,
I sat there with Sally. We sat there, we two. And I said, "How I wish we had something to do!"
How do modern linguists, eg CGEL authors or readers, characterize how We sat there, we two differs from the more basic or standard We sat there or We two sat there or The two of us sat there.
I know why, primarily, the variant choice was made by the author here. But it's an example of what? Are there common reasons to choose it aside from creating rhyme or emphasizing/stressing the subject?
I can think of simple similar constructions such as We lived in our own world, you and I. And I can see a relationship between such and emphatic pronouns or emphatic reflexive pronouns or similar: I made it myself.
There is also something similar and something different between the instant sentence and, for example, We sat there, we did.
My purpose in asking is to acquire language to help me make a point that what may seem like very basic or "low level" text usually contains relatively complex formations. CGEL pages or chapter would suffice to answer the question for my particular needs, and I'm hoping for an answer that, if elaborate, also contains a concise and fairly general summary, but which uses technical linguistic terms.