Parallelism

Mary continually refers to the students' poor parallel construction.  I am learning a lot about grammar working with her. 

For example, I appreciate Mary's poise, intelligence, and sense of humor.  (this sentence is badly parallel constructed).  What I mean to say is that I appreciate Mary's poise, her intelligence, and her sense of humor.  The wikiarticle says proper parallelism gives more focus and form to each item, thus bringing more focus to the writing as a whole.

good stuff.