Syntax Sentence Structure

I would like to transform typical Sentence Syntax into a different Syntax structure with the same (or nearly ) the same meaning. In other words, I would like to take written sentence, attach a "TYPE" (noun, verb, preposition, article, adverb, etc.) to each word in the sentence, and then rework the "TYPE" with different syntax, yet keeping somewhat the same meaning of the sentence. (If Possible) For Example: A sentence written as: "The man was at the store and purchased a sandwich." Using Sentence Syntax Transformation, I would like to see how to write it so it would say somewthing like...... "The man bought a sandwich while at the store." It is my understanding that there are so called "Standard Sentence Patterns" in writing a sentence. I dont know how many tree patterns that there are, but I bet there are quite a few. I just need to have someone provide me with typical sentence patterns that can be transformed to show the same meaning. Thank you.