英语构词法Wordformation.ppt
英语构词法 (Word-formation),上海市张堰第二中学 卫岑,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。,兼类词(转化词):将一种词性转化成另一种词性。,e.g. homework, spaceship,e.g. impossible, worker,e.g. open打开v. 开着的adj.,归类: classroom disagree book invitation everyday clean greenhouse watch hopeful,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):,兼类词/转化词(将一种词性转化成另一种词性):,classroom everyday greenhouse,disagree invitation hopeful,book clean watch,加前缀: happy - unhappy 加后缀: enjoy - enjoyable 既加前缀又加后缀: health -unhealthy,派生词(derivation),unluckily,词根,前缀,后缀,前缀改变词义不改变词性 后缀改变词性不改变词义,后缀(名词后缀),后缀(形容词后缀),后缀 (动词后缀),后缀 (副词后缀),后缀 (数词后缀),rain(形容词) _ agree(反义) _ nation(形容词)_ farm(人) _ recent(副词) _ true(名词) _ hope(形容词) _ home(形容词) _ visit(名词) _ America(形容词)_ comfortable (副词)_,rainy,national,recently,hopeful,visitor,American,disagree,farmer,homeless,truth,comfortably,Practice:,直击中考,涵盖题型: 1.用所给词的正确形式填空 2.首字母填空,disappear,pollution,useful,Lets hope that all our troubles will _ soon. (appear) (2010),2. The local people had to move away because of the serious _. (pollute) (2011),3. It is a very _ book for language learners to improve writing skills. (use) (2011),4. Jack finds it difficult to pronounce some English words _ . (correct) (2013),真题解析:,correctly,小结(Summary),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。,兼类词(转化词):将一种词性转化成另一种词性。,后缀:名词后缀、形容词后缀、动词后缀、副词后缀等。,前缀改变词义不改变词性 后缀改变词性不改变词义,