The phrase "sentence patterns" refers to the different ways sentences can be structured, like the order of words or the arrangement of parts of speech, to convey meaning in a clear and organized way. Full definition
Students who experiment with new sentence patterns and advanced grammatical structures, not from a textbook but from their own previous essays, are learning from application. (edutopia.org)
In traditional language classes, students have spent much of their class time rehearsing sentence patterns without much emphasis on oral language practice. (marzanocenter.com)