A prefix is a letter or group of letters added to the end of a word in order to get a new word with another meaning. For instance -eco in ecosystem, -extra in extravagant, - geo in Geography. If you understand the meaning of prefixes along with root words will give you the ability to determine a word's meaning without having to look it up. Learning the meaning of common prefixes can also help you understand unknown English words you come across. It can also help you become better at spelling words. Learning with prefixes will not only build your vocabulary but can make unfamiliar English words a lot less frightening. You will find in this book frequent English words that share the same prefix. Therefore, you will find it is very easy to relate different English words to the common prefix and remember its meaning. You can add thousands of words to your vocabulary in English by learning just the 100 most used English prefixes. You don't need to know which language they stem from; you only need to memorize or understand their meanings. Learning words with prefixes helps you to understand the origins of English grammar and spelling. So, by learning these, the forms and patterns of English will become clearer to you. Also, by studying prefixes, you're opening your brain up to understand many other languages, not just English. In this book you´ll find a great guide to English prefix words and how to use them. Download this book and start learning and understanding more English than ever!