九年级构词法.ppt

 加前缀： happy --- unhappy 加后缀： enjoy --- enjoyable 既加前缀又加后缀： health ---unhealthy (A)表示否定的前缀： un---unfair,unhappy non----nonsmoker (常用在n. adj. adv. 前) in----inactive (常用在adj.后) dis----disagree, disappear,dislike im----impolite, impossible (用在b,p,m 开头的词前) (B).表示错误或失误的前缀: mis---misunderstand, misdirect(误导) 常见的后缀 1.名词后缀 ： -er -or -tion -ment 常见的后缀 ４. 缩写和简写 :  缩写和简写(也被称为截断法或缩短法)主要采取: “截头”,　“去尾”或者 “既截头又去尾”的方法生成新词. telephone---phone airplane—plane laboratory-lab mathematics--math advertisement—ad examination--exam Identification---ID Identify识别 另外还有许多缩写词是由各个单词的首字母组成.　 CD ( compact disk) CCTV( China Central Television) NBA (National Basketball Association) UFO( unidentified flying object) UN( United Nations) USA( United States of America) * 英语构词法 Words Building 2013.3.28 1.When are you going to write about environmental education? 2.If we don’t, the future is hopeless. 3.It’s wasteful to throw away paper and metal. 3.Reuse means “use again”. 4.Every class collects reusable waste. General introduction Classify words Compounding (有两个或更多的词合成一个词) Derivation (在词根上加上前、后缀构成另外一个词) prefix suffix Conversion (将一种词性转化成另一种词性) Classify:classroom freedom darkest place invitation lock everyday riverside loneliest upstairs hopeful careless clean walk 合成词(有两个或更多的词合成一个词): 派生词(在词根上加上前、后缀构成另外一个词): 转化词(将一种词性转化成另一种词性): classroom everyday riverside upstairs freedom darkest invitation loneliest hopeful careless place lock clean walk １. 合成 : 有两个或更多的词合成一个词。 复合名词　 class + room = classroom (名词+名词) black+ board= blackboard (形容词+名词) 复合形容词 warm + heart + ed = warmhearted 热心肠的 good + looking = good-looking 相貌好看的 world +wide= worldwide　世界性的 hard+ working=hard-working 努力工作的 复合动词　 over + come = overcome克服 　(副词+动词) 复合数词 fifty+ four= fifty-four 复合代词 everyone, somebody, anything, nobody ( 不定代词+名词) 复合副词