This document discusses different types of inversion in English grammar: 1. Inversion can occur after "so" or "such" adjectives when the main verb is "be", used for emphasis. It only occurs if "so"/"such" is the first word. Inversion is more common with "so" than "such". 2. Inversion is also used in conditional forms to sound more formal, replacing "if" with inverted verbs like "should", "were", "had". 3. Inversion can follow adverbial phrases of direction/place at the start of a sentence, particularly with verbs of movement/location like "climb", "come", "fly", etc