高中英语 unit3 science versus natureword power课件 牛津译林必修5.ppt
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1、Unit3 Science versus natureWord power2021/8/11 星期三1 Prefixes and suffixesOrgans of the body2021/8/11 星期三2Prefixes 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
2、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 has published several books.She loves her job writing novels.So what is Miss Wan
3、gs occupation(职业职业)?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?irregular2021/8/11 星期三3independenceindependenceprefix(前缀前缀)root(词根词根)suffix(后缀后缀)Prefix:a group of letters that is added to the beginning
4、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.2021/8/11 星期三4 Attention!Usually a prefix will change the meaning of word,while a suffix will change the part of speech of a word.2021/8/11 星期三5Sometimes you can guess what a wor
5、d means by looking at its prefix or suffix.Look at the examples and work out the meanings.Prefix Example Meaning anti-anti-cloning,anticancer against,opposed todis-un-disappear,disagreeunfair,unwillingnot,apposed ofin-il-im-ir-incorrect,incomparableillegal,illogicalimmoral,immodestirresponsible,irre
6、gularnot,withoutpre-preview,preserveearly,beforepro-pro-cloningin favour of,supporting2021/8/11 星期三6re-recreate,repeat,renewagainSome other commonly used prefixesPrefix ExampleMeaning de-mal-non-notdecompose,declassifymaltreatment,malnutritionnon-smoker,non-alcoholic,non-profitapart,frombadly,illint
7、er-international,interaction,interruptbetweentele-telescope,telegram,telecommunicationfar offtrans-transport,translate,transnationalacrossmis-misunderstand,mislead,misdeedwrongsub-subtitle,subway,submarineunderover-overeat,overwork,overacttoo much2021/8/11 星期三7tri-triangle,tricycle,tricolor threeaut
8、o-autobiography,autoalarm,automobileself2021/8/11 星期三8Suffix 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
9、-nessdryness,madnessindicate a quality,state or character2021/8/11 星期三9Some 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 s
10、tate ofof the nature of-ishchildish,selfish-proof waterproof,fireproof,soundproof protect against-enwiden,sharpen,shortenmake or become-wardeastward,homeward,backward in the direction of-likewomanlike,childlikesimilar to2021/8/11 星期三10Do you think we should protect nature?Complete what an environmen
11、talist is saying below.Use the words from the box.disrespect,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.So
12、metimes I think we are fighting a(3)_ battle 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.i
13、llegaldisrespecthopelessuncertainunderstandable2021/8/11 星期三11Organs of the bodylungsliverheartstomachkidneys2021/8/11 星期三12Key to Exercise B(1)Brain (2)heart (2)(3)liver (4)lungs (3)(5)stomach (6)kidneys2021/8/11 星期三13Homework1.Complete Part C on page 47 in pairs or groups.2.Read the article in Par
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