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1、LanguageinuseSaveourworldPPT课件2TosummarizeandconsolidatetherulesofwordbuildingObjective:ObserveObservethefollowingsentencescarefully.Theyareallfromthismodule.1.Reusemeans“useagain”.2.Thoughpollutionisheavynow,Idon’tthinkit’shopeless.3.Iftheriversarepolluted,farmerscan’tu
2、sethewaterfortheircrops.4.Ifeveryonestartstodosomething,theworldwillbesaved.构词法1.合成法将两个或两个以上独立且语义不同的单词合在一起构成新词的方法称作合成法。合成名词afternoon,sportsman,blackboard,newspaper,airplane,classmate…合成形容词kind-hearted,middle-aged,hard-working…合成副词however,maybe…合成代词himself,everyone,nothin
3、g…合成动词overlook…2.派生法通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法称作派生法。前缀含义例词dis-不disagree,dislikeen-使……处在某种状态enable,enrichim-,in-不impossible,impatient,inexpensiveinter-在……之间international,interconnectmis-错误的mislead,misunderstandnon-不，非non-smoker,non-nativere-再，重复rewrite,retellun-不unable,
4、unhappy,unpopular2.派生法后缀含义例词-er,-or构成名词teacher,worker,visitor-ianmusician-ingbuilding,painting,shopping-istartist,scientist-mentagreement,government-nesscoldness,happiness,illness-thtruth,warmth-tioncompetition,education,information-tyactivity,safety后缀含义例词-able,-ible构成形容
5、词comfortable,eatable,enjoyable-alenvironmental,international-fulcareful,helpful-iveactive,expensive-lesscareless,helpless,homeless-lyfriendly,lovely,monthly-ousdangerous,famous-teen构成数词eighteen,fifteen,seventeen-thfifteenth,fifth,fortieth-tyforty,sixty,twenty-ly构成副词badly
6、,carefully,happily2.派生法词根词缀名词形容词副词+…interestuninterestedinterestinglyuninterestinginterestedinterestinghelphelpfullyhelplesslyhelpfulhelplessabledisableunableenableability3.转换法英语构词法中把一种词性转化为另一种词性而词形不变的方法称为转化法。(1)v.→n.—Let’stalkaboutitmore.—Ithinkwe’dbetterfinishthetalkno
7、w.—咱们再谈谈这件事吧。—我想我们最好现在结束谈话。(2)n.→v.—Shegavemeacupofwater.—Youshouldwatertheflowerstwiceaday.—她给了我一杯水。—你应该每天给这些花浇两次水。(3)adj.→n.—Shewaswearingablackdress.—Thegirlinblacklooksverybeautiful.—她穿着一条黑色的裙子。—那个穿黑衣服的女孩看上去很漂亮。LearningtoSometimesifyouknowthemeaningofthepartsofaword,
8、youcanworkoutthemeaningofthewholeword.re+new+ablerenewableagaincanbecanbenewagain1P100Makenewwords.Join
