构词法Word Formation在英语中，词的构成方式主要有三种：合成、转化和派生。
一、合成Compounding 两个或更多的词合成一个词。
方式：1. 直接写在一起。
2. 用连字符(-)连接。
3. 由两个分开的词构成。
(1)(2)(3)(4)合成副词however, maybe, wherever, whenever, forever(5)合成代词whoever,, whatever, everyone, nobody, myself, something, anything,二、派生Derivation后缀注意：-ese, -ian, -ist 既可以构成名词，又可以构成形容词。
-er 构成的名词，既有表示人的，又有表示物的。
如：cooker三、转化Conversion: 指一个词不变化词形，而由一种此类转化为另一种词类或几种词类。
1. 名词和动词之间的转化telephone电话——打电话, mirror镜子——像镜子一样反映, drink喝——饮料, record录音——记录, name, date, hand, study,2. 形容词转化为动词perfect完美的——使完善3.名词转化为形容词(副词) front前面——前面的4.形容词转化为名词chief 主要的——首领四、巩固练习Ⅰ.Match the right words from the right column with the words on the left.( ) 1. enrich A. trying to find jobs( ) 2. semicircle B. remove, get rid of ice, frost( ) 3. troublesome C. of, having, using imagination( ) 4. sharpen D. make or become sharp( ) 5. job-hunting E. half a circle( ) 6. limitless F. causing trouble( ) 7. imaginative G. make rich, improve in quality, flavour, etc.( ) 8. defrost H. without limitⅡ.Use the appropriate form of the words to fill in the blanks.1. The mother didn’t know why her daughter was crying _______. (noise)2. He was one of the best _______ in yesterday’s football match. (play)3. Look! How ______ Kate is laughing! (happy)4. It snowed _____ last night and now the streets are covered with snow. (heavy)5. Edison was a great ______. During his life he had many ______. (invent)6. More and more _____ have come to visit China over these years. （foreign）7. We want _________ reasons for your failure to help. (satisfy)8. Please give me some reference work. It will ______ my task. (simple)9. The boy had the _______ of being half starved. (appear)10. The police have _______ a plot against the President. (cover)11. The doctor said t hat Mary’s mother needed an _______.(operate)12. She hoped that her son would become a _______. (music)13. Few ______ words made us excited. (speak)14. The days on the moon get hotter than ______ water. (boil)15. Thank you for your _________. (kind)16. Many college students work while they are studying because they want to make some money fortheir college _____. (expensive)17. Most international ______ letters are written in English, too. (busy)18. The boy noticed an ______ mistake on his paper, but he decided not to say anything about it.(correct) 19. When in Rome, do as the _____ do. (Rome)20. The teacher was pleased with her _______. (honest)Ⅲ.根据上下文语境和提示的首字母，在划线处写出一个合适的词。
