Why do we add S to some words but ES to others? And when a word ends with Y, how do we know whether to change the Y to I before adding the plural suffix? And why on earth does knife become knives? You can unravel these mysteries with six simple rules.
Prepositions can be very confusing for English Language Learners to understand a simple chart like this could be displayed in a prominent place in the classroom and used as a resource not only for ELLs but for the whole class.