Discourse analysis

Does she like cat? Here the verbal group split by subject she

1. 
   The Guardian, Joyce reads. OSV Object-fronted object is brought forward:
   

There are in English a variety of ways in which the basic clause elements of subject, verb, complement/object, adverbial can be rearranged by putting different elements at the beginning of the clause, as illustrated above. These ways of bringing different elements to the front are called fronting devices.

2. 
   Sometimes Joyce reads The Guardian. ASVO Adverbial-fronted
   
3. 
   It's The Guardian Joyce reads.
   

It + be + C/O + SV It-theme, or cleft (The Guardian here seems to operate simultaneously as complement of is and as object of reads)

4. 
   What Joyce reads is The Guardian.
   

Wh- + SV + be + C/O Wh-pseudo-cleft

5. 
   She reads The Guardian, Joyce.
   

S(pronoun) VOS(noun) Right-displaced subject

6. 
   Joyce, she reads The Guardian.
   

S(noun) S(pronoun) VO Left-displaced subject
If we look again at examples from the point of view of how the information in them is presented, we can see how different options enable us to focus on or highlight certain elements: in (1) it seems 'about' The Guardian rather than 'about' Joyce; (5) and (6) seem to be telling us something 'about' Joyce.
In English, what we decide to bring to the front of the clause (by whatever means) is a signal of what is to be understood as the framework within which what we want to say is to be understood. The rest of the clause can then be seen as transmitting 'what we want to say within this framework'. Items brought to front-place in this way we shall call the themes (or topics) of their clauses