5.2 Prefixation 求 The classification of prefixes In some reference books, prefixes(and suffixes) are classified according to their source, but this does not seem to help from a practical point of view. It seems more helpful to classify the most important productive prefixes by their meaning into the following ten categories 米 English Lexicology (m)English Lexicology(II) 6 5.2 Prefixation ◼ The classification of prefixes ◼ In some reference books, prefixes (and suffixes) are classified according to their source, but this does not seem to help from a practical point of view. It seems more helpful to classify the most important productive prefixes by their meaning into the following ten categories: