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Top Twenty Prefixes

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Top Twenty Prefixes

  1. 1. The Top Twenty Prefixes The most commonly-used word beginnings.
  2. 2. What Are Prefixes? <ul><li>Prefixes are first syllable word parts such as “non-” and “re-.” </li></ul><ul><li>They have their own meaning. </li></ul><ul><li>Prefixes combine with words to create new meanings. </li></ul><ul><ul><li>Pre + View = Preview (first look) </li></ul></ul><ul><ul><li>Super + Star = Superstar (top player) </li></ul></ul>Which prefixes do you think are the most common?
  3. 3. Are prefixes important? <ul><li>Prefixes add meaning to many thousands of words. </li></ul><ul><li>Learn a few prefixes, and you open up the meaning of thousands of words. </li></ul><ul><li>The four most frequent prefixes account for 97% of prefixed words! </li></ul>Is there a difference between fluent and affluent?
  4. 4. How do you attach prefixes? <ul><li>When you add a prefix to a root word the spelling of both usually stays the same. </li></ul><ul><li>An exception is when the prefix 'all' is added to a root word the final 'l' of 'all' is dropped: all + ways = al ways. </li></ul><ul><li>Sometimes you can add two prefixes to a word at once: re + dis + cover = rediscover. </li></ul>Have you rediscovered interest in learning vocabulary?
  5. 5. Do you understand not prefixes? <ul><li>There are several prefixes which reverse the meaning of a word. </li></ul><ul><li>An easier way to remember them is if you think of them to essentially mean 'not'. </li></ul><ul><li>Negative prefixes include un true, im probable, il logical, in complete, ir rational, and dis like. </li></ul>Have you rediscovered interest in learning vocabulary?
  6. 6. Do you know these prefixes? <ul><li>Anti = against : anti-war, anti-abortion </li></ul><ul><li>De = opposite : destroy, defeat </li></ul><ul><li>Dis* = not, opposite of : disagree, disbar </li></ul><ul><li>En(m) = cause to : encode, embrace </li></ul><ul><li>Fore = before : forecast, foretell </li></ul><ul><li>In = in : intake </li></ul><ul><li>Inter = between : interact, intercept </li></ul>Do the people in the illustration disagree with Doug?
  7. 7. Do you know these prefixes? <ul><li>Mid = Middle : Midway </li></ul><ul><li>Mis = Wrongly : Mistake </li></ul><ul><li>Non = Not : Nonsense </li></ul><ul><li>Over = Over : Overlook </li></ul><ul><li>Pre = Before : Preview </li></ul><ul><li>Re* = Again : Return </li></ul><ul><li>Semi = Half : Semicircle </li></ul>Is it possible to be in the middle of nowhere?
  8. 8. Do you know these prefixes? <ul><li>15. Sub = Under : Submarine </li></ul><ul><li>16. Super = Above: Superstar </li></ul><ul><li>17. Trans = Across : Transport </li></ul><ul><li>18. Un* = Not : Unfriendly </li></ul><ul><li>19. Under = Under : Undersea </li></ul><ul><li>20. In, Im, Il, Ir * = Not : Injustice, Impossible </li></ul>Why would a poor community be under a dark cloud?
  9. 9. Which Prefix Fits? <ul><li>I have a different idea; I __agree. </li></ul><ul><li>That can’t be; it’s just __possible. </li></ul><ul><li>Say that again; please __peat it. </li></ul><ul><li>Aliens look bad; they are __friendly. </li></ul><ul><li>Can weathermen __cast weather? </li></ul><ul><li>If we’re wrong, we make __takes. </li></ul><ul><li>Let’s not __look tomorrow’s quiz. </li></ul>
  10. 10. Which Prefix Fits? <ul><li>Only __marines travel underwater. </li></ul><ul><li>What has no meaning is __sense. </li></ul><ul><li>Trains and trucks provide __port. </li></ul><ul><li>What can’t be done is __possible. </li></ul><ul><li>What is put above is __imposed. </li></ul><ul><li>A first look is called a __view. </li></ul><ul><li>The middle exam is the __term. </li></ul>
  11. 11. Which Prefix Fits? <ul><li>Should children __obey parents? </li></ul><ul><li>Can __cooked food be __cooked? </li></ul><ul><li>What does it mean to __heat food? </li></ul><ul><li>Do bad children __please parents? </li></ul><ul><li>Which door is the __it to leave? </li></ul><ul><li>Are you __legal or __documented? </li></ul><ul><li>Can an __literate person read? </li></ul>
  12. 12. Can you use academic words? <ul><li>Words: survey, design, select, data, text. </li></ul><ul><li>Who plans the __ for a new house? </li></ul><ul><li>How much information or __ is in computers? </li></ul><ul><li>Do you have your __book today? </li></ul><ul><li>Do you look over or __ a new house? </li></ul><ul><li>Is it your choice to __ your own lunch? </li></ul>Have you learned the vocabulary yet?

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