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牛津高中英语模块5 Unit3 Word power


Word Power
Teaching objects: 1. learn prefix and suffix and learn to guess meanings based on prefix and suffix 2. learn organs of the body Teaching procedures: I Prefixes and suffixes St

ep I Lead-in appear, novel, regular, respect We are going to have some questions. Please use these words to help you, but you need to add some letters to the words first. 1)You cannot find your new pen. What happened to your pen? It disappeared

2) 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? Respectable 3) Miss Wang has published several books. She loves her job writing novels. So what is Miss Wang’s occupation(职业)? She is a novelist

4) 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? Step II Introduction independence irregular

in

depend

ence

prefix(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 the part of speech of a word. StepIII Prefixes

Sometimes you can guess what a word means by looking at its prefix or suffix. Look at the examples and work out the meanings. Prefix antidisuninilimirprereExample anti-cloning, anticancer disappear, disagree unfair, unwilling incorrect, incomparable illegal, illogical immoral, immodest irresponsible, irregular preview, preserve recreate, repeat, renew early, before again not, without Meaning against, opposed to not, apposed of

StepIV Adding information Some other commonly used prefixes Prefix demalnoninterteletransmissubovertriautoExample decompose, declassify maltreatment, malnutrition non-smoker, non-alcoholic, non-profit international, interaction, interrupt telescope, telegram, telecommunication transport, translate, transnational misunderstand, mislead, misdeed subtitle, subway, submarine overeat, overwork, overact triangle, tricycle, tricolor autobiography, autoalarm, automobile Meaning apart, from badly, ill not between far off across wrong under too much three self

Step V Suffixes Suffix -able -ful -ist -less -ment -ness Example comfortable, noticeable cheerful, thoughtful scientist, novelist hopeless, aimless agreement, treatment dryness, madness Meaning worthy of, able to be full of, characterized by someone who does something without indicate a state or condition indicate a quality, state or character

Step VI Adding information Some other commonly used suffixes -al -ion -ship -dom -ish -proof -en -ward -like cultural, national, original invitation, competition, protection hardship, scholarship, relationship freedom, kingdom childish, selfish waterproof, fireproof, soundproof widen, sharpen, shorten eastward, homeward, backward womanlike, childlike of or concerning action or condition of… state of being, skill condition or state of… of the nature of… protect against make or become in the direction of similar to

Step VII Exercise Do you think we should protect nature? Complete what an environmentalist is saying below. Use the words from the box.
irresponsible uncertain illegal harmful disrespect uncertain disrespect

I am strongly against cloning humans. I think it is (1)___________ for us to do 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) kidneys

Step VIIII Homework .Read the article in Part A on page 113 and do Par B on the same page.


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