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1、Module12 SaveourworldUnit3Languageinuse在一个单词前或后加上一个词缀，就可以构成一个新词。根据词缀的位置，分为前缀和后缀两种。掌握一些常见的词缀，对单词的记忆和理解有很大的帮助。比如：我们学会care，就能掌握careful，careless，carefully，carelessly。下面我们来学习几个常见的前、后缀：Grammar1.表示否定意义“无，不”的前缀：impolite,impossibleun-in-dis-im-il-unfair,unhappyinactive,inhuman,indirectdisagree,disap
2、pearillegal前缀：2.表示程度、大小的前缀：super-over-mini-under-superstar,supermarket,superman,superpoweroverhead,overeat,overuseminibus,miniskirt,minicarunderground,underdevelop前缀：3.表示“再”的前缀：re-rewrite,reuse,recycle前缀：4.表示“向，背”的前缀：pro-anti-pro-Chinese,pro-Americananti-war(反战),anti-pollution5.表示“整个、完全”意思的
3、前缀：al-表示“完整，完全”：alone,almost,over-表示“完全，全”：overall,overflow(充满)前缀：–able表示“可能，易于，适合于”，构成形容词，如：renewable,eatable(可吃的)，lovable(可爱的)，comfortable,movable(可移动的)后缀：常见的后缀：2.–ful表示“充满...的，具有...性质的”，构成形容词。如：helpful,hopeful,powerful,useful,careful,beautiful后缀：3.–less与-ful相反，表示“少的，不足的”，构成形容词。如：helpless
4、,hopeless,powerless,useless,careless1.动词变名词：-ation-ment-al-ee-er-orsatisfaction,education,realizationdevelopment,movementarrival,refusaltrainee,employeeteacher,workervisitor,sailor让我们来看一些不改变词根的基本意义，而是改变了词性的后缀。2.形容词变名词：-ness-ity-ismhappiness,meanness,carelessnessability,possibilityMarxism,cr
5、iticism3.名词、形容词变动词：-ify-ize-enbeautify,simplifyrealizequicken,widen,sharpen4.名词变形容词：-y-ish-some-ous-fulwindy,rainy,sandyfoolish,feverishhandsome,troublesomedangerous,humoroushelpful,careful,peacefulCompletethetableNounVerbAdjectiveAdverb------------energeticallyenvironment----hopelessly----
6、nationalpollute----seriousness----unusualness----unusuallywasteworryelectricityelectricenergyenergeticenvironmentalhopelesshopehopepollutionpollutedseriousseriouslynationnationallyunusualenvironmentallywasteworriedlywastefullywastefulworriedworryCompletethesentenceswiththecorrectformofthewo
7、rds.1Theyareworkingvery______________toreducewaste.2Thesituationis_________.Wecan’tdoanythingtomakeitbetter.3Thefactory________theriver,andthefishdied.4Wedon’toftenwalkinthecountry.It’sa(n)_________activityforus.5Don’t______.Everythingwillbeallright.6Don
