Cách sử dụng
A prefix is a word part that is added to the beginning of a word to change its meaning. For example, the prefix "un-" can be added to the word "happy" to create the new word "unhappy," which means the opposite of happy. Prefixes are commonly used in English, especially in academic and scientific vocabulary. It is important for English learners to understand the meaning of common prefixes so they can better understand and use words in context.