parallel

Parallel Structure
Parallel structure is essential for good writing style, and is very useful for thesis statements.

If you are not sure about parallel structure, check these links:

http://owl.english.purdue.edu/handouts/grammar/g_parallel.html

http://owl.english.purdue.edu/owl/resource/644/01/

http://homepages.cambrianc.on.ca/tutorial/thetutorialcentre/writing/parallel_structure.htm has some exercises