Prefixes • reading standard=1.8 Use knowledge of prefixes to determine the meaning of words. Prefixes • Today we are going to use prefixes to determine the meaning of words. • Determine= figure out • What are going to do today? • What are we going to determine? Prefixes • If you untie your shoe, are you making a bow or taking it out? • If you rewrite your letter, are you writing it for the first time or second time? • If it is impossible to swim to China, can you do it or not? The way we knew exactly what was meant was by adding a prefix. A prefix is a word part added to the beginning of a base word. Please keep in mind…the base word is a word by itself. Example pre-read. Read is a word by itself without the prefix “pre”. Pre + read=pre-read What is a prefix? A prefix changes the meaning of a word. Prefixes and Definitions Examples im- not improper in- not incomplete bi- two bicycle non- not nonstop dis- not or opposite of disagree Re-do again reread Pre-before Pre-read Mis-incorrect misspell Prefixes improper incomplete Prefixes bicycle nonstop Prefix disagree reread Prefixes Pre-read misspell Importance • Why is it important to know prefixes? WARNING! Just because a word begins with im, re, or another prefix, doesn’t mean it is a prefix. • Eating a good breakfast is important. • The mailman received the mail. If there is no base word, then it’s not a prefix. Ceive or Portant don’t mean anything by themselves • • • • Read the sentence. Think: “What is the sentence about?” Look at the prefix definition. Choose and write the best prefix for the sentence. Prefixes • Choose and write the best prefix for the sentence. • 1. Please _______ my glass with milk. (fill again) 2. You must _________ the oven to 300 degrees. (heat again) Prefixes • Choose and write the best prefix for the sentence. • 3. He _____ his steps through the woods. (traced again) • 4. You should _____ your notes before a test. (view again) Review • A prefix is a word part added to the beginning of a base word. • A prefix changes the meaning of a word. Prefixes bicycle nonstop “That’s nonsense,” said his brother Jake. “You can use my bike.” “Gee, thanks,” said Randy, hopping on the bike. “See, I can be likable!” said Jake with a grin.