Try to limit plus to mathematics, and use and or with where they're appropriate. The guiding principle in all your word choices should be precision, the most important contributor to clarity . But while a large vocabulary will help you here, don't resort to long words or obfuscation . Precision can also mean putting your words in just the right order, or using just the right grammatical construction to make your point. Always read your writing as closely as possible, paying attention to every word, and ask yourself whether every word says exactly what you want.
Prepositions are usually little words that indicate direction, position, location, and so forth.
If your ear tells you he should be him , the word might be a preposition. Thus to plus he becomes to him , so to is a preposition. Prepositions at the End. Along with split infinitives , a favorite bugbear of the traditionalists. A sentence becomes unnecessarily obscure when it's filled with from whom s and with which es.