Antonyms What is a negative prefix? It’s a group of letters added to the beginning of a word to form the word’s opposite. Examples: unfriendly impatient incomplete dishonest irresponsible illiterate In pairs, think of other words formed with negative prefixes. UN UNFORGETTABLE UNACCEPTABLE IM IMPOLITE IMMORTAL IN INSECURE INDECISIVE IR IRREPLACEABLE IRREGULAR DIS DISLOYAL DISPLEASED IL ILLEGIBLE ILLEGAL Now, open your book to page 53 and try to come up with the antonyms for the following words. 1.appropriate 2.courteous 3.excusable 4.imaginable 5.honest 6.pleasant 7.rational 8.mature inapproriate discourteous inexcusable unimaginable dishonest unpleasant irrational immature Grouping by prefix acceptable considerate excusable responsible proper respectful Dis Im honest imaginable appropriate polite mature pleasant In Ir courteous rational Un Language note: Many words starting with m- or p- form the negative with the prefix im. Many words starting with r- form their negative with the prefix ir-. For example, immobile, impossible, irregular, immortal, impatient, irrepleceable. There are exceptions; for example, displeased, disrespectful. Test your memory! Student book - 53 Write your own examples of inappropriate behavior. Write your own examples of inappropriate behavior. Use the adjectives from Exercises D and E. Example: It’s inconsiderate to play loud music on a bus. Suggestions: 1. It’s disrespectful to talk back to your parents. 2. It’s impolite to smoke in enclosed spaces. 3. It’s dishonest to cheat on a test. 4. It’s inconsiderate to use a cell phone in a restaurant. 5. It’s unacceptable to litter on the street. 6. It’s discourteous to answer your cell phone in class.