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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单词构成,前缀,词根,后缀,构词法,名师,P184,构词法,：,合成,(Compounding),派生法,（,Derivation,）,转化法,（,Conversion,）,workmate, like-minded,，,break,派生法,:,由一个词根加上前缀或后缀构成另一个词的方法。,happy-happi,ly,-happi,ness,un,happy-,un,happily -,un,happiness,一、前缀，,1.,否定,happy -,un,happy,appear -,dis,appear,possible -,im,possible,smoker -,non-,smoker,take -,mis,take,Match A and B.,B,like,appear,polite,lead,necessary,advantage,stop,believe,understand,A,un,dis,im,non-,mis,un,like,不像,;,dis,like,不喜欢,dis,appear,消失,im,polite,没有礼貌的,mis,lead,误导,un,necessary,不必要的,dis,advantage,缺点,non-,stop,不停地,dis,believe,不相信,mis,understand,误解,常用于,形容词,动词,b/p/m,开头的形容词,名词,/,动词,动词,Check ourselves,The boy said nothing but quietly walked away, _ (appear) in the dark.,disappearing,2.,表示空间位置，方向关系的前缀,1),a-,表示“在,之上”，“向,”,aboard, aside,2),inter-, intel-,表示“在,间，相互”,international, interaction, internet,3,）,mid-,表示“中，中间”,midday, midnight, mid-autumn,5),out-,表示“在上面，在外部，向外”,outline, outside, outward, outgoing,6),over-,表示“在上面，在外部，超过”,overhead, overboard,7),extra-,表示“额外”,extraordinary,8),fore-,表示“在前面”,forehead, foreground,9),in-,表示“向内，在内，背于”,inland, inside,2.,表示空间位置，方向关系的前缀,under-,表示“在,.,下面，下的”,underline, underground, underwater,11),up-,表示“向上，向上面，在上”,upward, uphold, uphill(,上坡,),1,re-“,又,再”,repeat, review, return, reunite, remarry,2. co“,联合，伴同”,cooperate, coexist, co-worker,3.,super“,在,上；加之”,superman, supermarket,3.,表示其他意义的前缀,:,名词的常见后缀,-,tion,-,ness,-,ment,-,er,-or,-,ist,-ant,destination,sadness,settlement,writer,actor,artist,servant,常在形容词后,2.,后缀,:,(,改变词性）,关于人的词缀：,-,er,（人， 动作执行者）,-,ese,（人， 语言）,-,ian,（人）,-,ist,（人，大家）,-or,（人，动作者）,tion,（行为，状态）,-,ness,(,性质）,singer, fighter, teacher,Chinese, Japanese,musician, Russian,artist, pianist, scientist,conductor, visitor, professor,invention,，,liberation,，,operation,business,，,illness,，,darkness,形容词：,-al,-,ful,（,充满,的,）,-less,-y,动词,：,-,ize,副词：,-,ly,形容词：,physical, national, political,useful, careful, helpful,fearless, useless, careless,cloudy, sunny, dirty,apologize organize,badly,，,angrily,，,truly,无,副词要去,e,的：,true, gentle, simple,-,ly,-,ize,-able,-,ment,-,er,-or,-,ist,-,ian,-,tion,-,ness,-,ful,-,sive,-,tive,-,ed,-,ing,-,ful,-,en,-,n.,v.,adj.,adv.,合成,：,把两个或更多的词合成一个词。,合成的词构成大致有以下几种情况。,1.,合成名词：,2.,合成动词：,3.,合成形容词,birthday roommate football blackboard,understand safe-guard white-wash,snow-white hand-made dark-blue,taste,n,.,味道,v.,尝起来,It has a good taste,.,It tastes very good,.,book,n.,书籍,v.,记载,record,n,.,记录,v.,记录,This book is very good,.,He is booking the history,.,He broke the record,.,He recorded something while reading a book.,clean,adj.,干净,v.,清扫,Please keep tidy and clean,.,You have to clean the blackboard after class.,n.,书籍,v.,记载,n.,书籍,v.,记载,book,n.,书籍,v.,记载,n,.,记录,v.,记录,n,.,记录,v.,记录,record,n,.,记录,v.,记录,It has a good taste,.,It tastes very good,.,book,v.,记载,record,n,.,记录,v.,记录,This book is very good,.,He is booking the history,.,He broke the record,.,He recorded something while reading a book.,clean,adj.,干净,v.,清扫,Please keep tidy and clean,.,You have to clean the blackboard after class.,v.,记载,book,n.,书籍,v.,记载,n,.,记录,v.,记录,n,.,记录,v.,记录,record,n,.,记录,v.,记录,n,.,记录,转化活用法,适用于双性词,taste,n,.,味道,v.,尝起来,It has a good taste,.,It tastes very good,.,book,n.,书籍,v.,记载,record,n,.,记录,v.,记录,This book is very good,.,He is booking the history,.,He broke the record,.,He recorded something while reading a book.,clean,adj.,干净,v.,清扫,Please keep tidy and clean,.,You have to clean the blackboard after class.,n.,书籍,v.,记载,n.,书籍,v.,记载,book,n.,书籍,v.,记载,n,.,记录,v.,记录,n,.,记录,v.,记录,record,n,.,记录,v.,记录,It has a good taste,.,It tastes very good,.,book,v.,记载,record,n,.,记录,v.,记录,This book is very good,.,He is booking the history,.,He broke the record,.,He recorded something while reading a book.,clean,adj.,干净,v.,清扫,Please keep tidy and clean,.,You have to clean the blackboard after class.,v.,记载,n,.,记录,v.,记录,n,.,记录,v.,记录,record,n,.,记录,v.,记录,n,.,记录,It has a good taste,.,It tastes very good,.,This book is very good,.,It has a good taste,.,It tastes very good,.,He is booking the history,.,This book is very good,.,It has a good taste,.,It tastes very good,.,He broke the record,.,He recorded something while reading a book.,He is booking the history,.,This book is very good,.,It has a good taste,.,It tastes very good,.,Please keep tidy and clean,.,He broke the record,.,He recorded something while reading a book.,He is booking the history,.,This book is very good,.,It has a good taste,.,It tastes very good,.,You have to clean the blackboard after class.,Please keep tidy and clean,.,He broke the record,.,He recorded something while reading a book.,He is booking the history,.,This book is very good,.,It has a good taste,.,It tastes very good,.,Practice (II):,rain(,形容词,) _ agree(,反义,)_,nation(,形容词,)_ farm(,人,)_,recent(,副词,)_ friend(,形容词,)_,hope(,形容词,)_ back(,形容词,)_,visit(,名词,)_ home(,形容词,) _,eight(,序数词,)_ true(,名词,)_,America(,形容词,)_ China(,形容词,)_,按括号内的要求改写下列单词,rainy,national,recently,hopeful,visitor,eighth,American,disagree,farmer,friendly,backwards,homeless,truth,Chinese,With the (1)_ (develop) of industry, air pollution is getting more (2)_ more serious. In Beijing, many people suffer different kinds of (3) _,（,ill,）,because of air pollution.,Air pollution is caused (4)_ the following reasons: about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give out (5)_ (poison,）,gases. 25%of air pollution is caused by factories. Another (6)_ (fact) is the _(smoke). Smoking not only does (7) _,（,harmful,）,to their health(8)_ also to others. Besides these, about 10% of air (9) _ (,polute)is,caused by other reasons.,development,and,illnesses,by,poisonous,factor,harm,but,pollution,smokers,Homework:,名师,P188,Good-bye!,
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