高25模塊3單元Wordpower 完整版課件PPT

1、張?jiān)?孔國(guó)慶 李霞 鄧衛(wèi)東 Unit3 Science versus natureWord power Prefixes and suffixesOrgans of the bodyPrefixes and suffixesappear, novel, regular, respectWe 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.

2、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 has published several books. She loves her job writing novels. So what is Miss Wan

3、gs occupation(職業(yè))?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?irregularindependenceindependenceprefix(前綴)root (詞根)suffix(后綴)Prefix: a group of letters that is added to the beginning of a word to chang

4、e 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.Sometimes you can guess what a word means by looking at its prefix or suffix.

5、 Look at the examples and work out the meanings.Prefix Example Meaning anti-anti-cloning, anticanceragainst, opposed todis-un-disappear, disagreeunfair, unwillingnot, apposed ofin-il-im-ir-incorrect, incomparableillegal, illogicalimmoral, immodestirresponsible, irregularnot, withoutpre-preview, pres

6、erveearly, beforepro-pro-cloningin favour of, supportingre-recreate, repeat, renewagainSome other commonly used prefixesPrefix ExampleMeaning de-mal-non-notdecompose, declassifymaltreatment, malnutritionnon-smoker, non-alcoholic, non-profitapart, frombadly, illinter-international, interaction, inter

7、ruptbetweentele-telescope, telegram, telecommunicationfar offtrans-transport, translate, transnationalacrossmis-misunderstand, mislead, misdeedwrongsub-subtitle, subway, submarineunderover-overeat, overwork, overacttoo muchtri-triangle, tricycle, tricolor threeauto-autobiography, autoalarm, automobi

8、leselfSuffix Example Meaning -ablecomfortable, noticeable worthy of, able to be-fulcheerful, thoughtfulfull of, characterized by-istscientist, novelistsomeone who does something-lesshopeless, aimlesswithout-mentagreement, treatmentindicate a state or condition-nessdryness, madnessindicate a quality,

9、 state or characterSome other commonly used suffixes-alcultural, national, originalof or concerning-ioninvitation, competition, protectionaction or condition ofstate of being, skill-shiphardship, scholarship, relationship-domfreedom, kingdom, condition or state ofof the nature of-ishchildish, selfis

10、h-proofwaterproof, fireproof, soundproofprotect against-enwiden, sharpen, shortenmake or become-wardeastward, homeward, backwardin the direction of-likewomanlike, childlikesimilar toDo you think we should protect nature? Complete what an environmentalist is saying below. Use the words from the box.d

11、isrespect, hopeless, illegal, uncertain, understandableI think cutting down trees should be made(1)_ and tighter laws should be introduced. So many people are showing their(2)_ for nature; they dont seem to care that they are destroying the environment. Sometimes I think we are fighting a(3)_ battle

12、 against people who just wont listen. I know scientists have worked hard to achieve scientific breakthrough but its(4)_ whether theyll succeed totally.Although its(5)_ that they want to advance technology, I think some things are best left the way they are.illegaldisrespecthopelessuncertainunderstandableOrgans of the bodylungsliverheartstomachkidneysKey to Exerc