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1、Word PowerTeaching objects：1. learn prefix and suffix and learn to guess meanings based on prefix and suffix2. learn organs of the bodyTeaching procedures：IPrefixes and suffixesStep I Lead-in appear, novel, regular, respectWe are going to have some questions. Please use these words to help you, but
2、you need to add some letters to the words first.1) You cannot find your new pen. What happened to your pen? It disappeared2) Many people respect Mr. Li and think he is a good man. He helps people out and is a good citizen and friend. So can you find a word to describe Mr. Li?Respectable3) Miss Wang
3、has published several books. She loves her job writing novels. So what is Miss Wangs occupation(职业)? She is a novelist4) You cannot find the order of the numbers in a group of members. So can you find a word to describe the order of the numbers? irregularStep II Introductionindependencein depend enc
4、eprefix(前缀) root (词根) suffix(后缀)Prefix: a group of letters that is added to the beginning of a word to change its meaning.Suffix: a letter or a group of letters added to the end of a word to make a different word.Attention !Usually a prefix will change the meaning of word, while a suffix will change
5、 the part of speech of a word.StepIII PrefixesSometimes you can guess what a word means by looking at its prefix or suffix. Look at the examples and work out the meanings.PrefixExample Meaning anti-anti-cloning, anticanceragainst, opposed todis-un-disappear, disagreeunfair, unwillingnot, apposed ofi
6、n-il-im-ir-incorrect, incomparableillegal, illogicalimmoral, immodestirresponsible, irregular not, withoutpre-preview, preserveearly, beforere-recreate, repeat, renewagainStepIV Adding information Some other commonly used prefixesPrefixExampleMeaningde-decompose, declassifyapart, frommal-maltreatmen
7、t, malnutritionbadly, illnon-non-smoker, non-alcoholic, non-profitnotinter-international, interaction, interruptbetweentele-telescope, telegram, telecommunicationfar offtrans-transport, translate, transnationalacrossmis-misunderstand, mislead, misdeedwrongsub-subtitle, subway, submarineunderover-ove
8、reat, overwork, overacttoo muchtri-triangle, tricycle, tricolorthreeauto-autobiography, autoalarm, automobileselfStep V SuffixesSuffix ExampleMeaning-ablecomfortable, noticeable worthy of, able to be-fulcheerful, thoughtfulfull of, characterized by-istscientist, novelistsomeone who does something-le
9、sshopeless, aimlesswithout-mentagreement, treatmentindicate a state or condition-nessdryness, madnessindicate a quality, state or character Step VI Adding informationSome other commonly used suffixes-alcultural, national, originalof or concerning-ioninvitation, competition, protectionaction or condi
10、tion of-shiphardship, scholarship, relationshipstate of being, skill-domfreedom, kingdomcondition or state of-ishchildish, selfishof the nature of-proofwaterproof, fireproof, soundproofprotect against-enwiden, sharpen, shortenmake or become-wardeastward, homeward, backwardin the direction of-likewom
11、anlike, childlikesimilar toStep VII ExerciseDo you think we should protect nature? Complete what an environmentalist is saying below. Use the words from the box.irresponsible illegal harmful uncertain disrespect uncertain disrespectI am strongly against cloning humans. I think it is (1)_ for us to d
12、o that. People who want to clone human begins show their (2)_ for nature. Step VIII organs of the body They are hardly aware of the (3)_ effects of cloning humans. It is (4)_ what a cloned human being would be like. It could turn out to be a monster! In my opinion, tight laws should be put in place to make cloning human being (5)_. Look at the pictures of the major organs of the body and try to recognize them.Key for Exercise B(1) Brain (2) heart (3) liver (4) lungs (5) stomach (6) kidneysStep VIIII Homework.Read the article in Part A on page 113 and do Part B on the same page.