Unit2 Grammar构词法 24PPT（ppt课件） -2022新外研版（2019）《高中英语》必修第一册.ppt

1、 请翻译：请翻译：Since you are so sensitive to the cold,youd better put on more clothes when it is getting cold.You must be thought to be illiterate if you havent heard about Shakespeare.Word formationTeaching aims:1.To explore some rules of word formation 2.To improve the students abilities to guess the me

2、anings of the words.3.To enlarge the students vocabulary.Word formation种类：种类：在英语中在英语中,词的构成法主要有四种词的构成法主要有四种:合成、转化、派生、缩略合成、转化、派生、缩略一、合成由两个或更多的词合成一个词，有的用连词符号由两个或更多的词合成一个词，有的用连词符号“-”连接，有的连接，有的直接连写在一起，还有的由分开的两个词构成直接连写在一起，还有的由分开的两个词构成:1.合成名词合成名词:pain-killer/cowboy/editor-in-chief/output/outbreak/breakthro

3、ugh/breakdown/outcome2.合成动词合成动词:overcome/uphold/sleepwalk3.合成形容词合成形容词:snow-white /lifelong /well-known newly-built/time-saving/man-made/near-sighted/far-sighted/short-sight/widely-accepted/energy-saving/hand-made/home-made/three-legged/4.合成副词合成副词:everywhere/however/beforehand5.合成代词合成代词:everything/an

4、ybody6.合成介词合成介词:into/within/inside/请同学们翻译下列合成词：（请同学们翻译下列合成词：（Brainstorm)good-looking/best-selling/widely-accepted/breath-taking/English-speaking/mouth-watering/profit-making/home-made/short-sighted/kind-hearted/shortcoming/drawback/landmark/bedclothes/sunshine/downtown/teamwork/software/rainfall/wat

5、erfall/desktop/laptop/briefcase/coastline/keyboard/input/output/outbreak/upbringing/rainbow/guideline/headline/headquarters/aircraft-carrier/airline/weekend/wildlife/sandstorm/mudslide/database/bookshelf/freeway/expressway/subway/cocktail/take-away外卖外卖/make-up/butterfly/earthworm/go-between/whereabo

6、uts/countdown/breakdown/outcome二、转化:It tastes good.It has a good taste.She is the kind of person who talks about you behind your back.You are not alone,and we are all backing you.He made it clear that he would not give up.He cleared the table by taking away plates.由一种词性转化为另一种或几种词性由一种词性转化为另一种或几种词性.(1

7、)动词动词-名词名词(2)名词名词-动词动词（3）形容词）形容词-动词动词（4）形容词）形容词-名词的转换名词的转换(意义改变意义改变):well(adj)-well(n)fine(adj)-fine(n)patient -patient safe-safe plain -plain content-content concrete-concrete stable-stable relative -relative fair-fair firm-firm chief-chief 特殊的特殊的 as.三、派生：1.表示表示否定意义否定意义的前缀的前缀dis-dishonest,dislike，d

8、isappear,discourage,dissatisfied,disappear,disorderin,im,ir,il,inexperienced,inconvenient,inaccurate,impossible,impatient,improper,impolite,immoral,irregular,irresponsible,illegal,ill-gotten,mis-misunderstand,mislead,misuse,mistrustnon-non-profit,non-smoker,non-violenceun-unable,uncertain,unimportan

9、t,uneasyanti-,ant-antisocial,antifreeze,antishock 由一个词根加上由一个词根加上前缀前缀或或后缀后缀构成另外一个词。构成另外一个词。5)out-,表示表示“在上面，在外部，在外在上面，在外部，在外”outline,outside,outward6)over-,表示表示“在上面，在外部，向上在上面，在外部，向上”overlook,overhead,over-bridge7)extra-,表示表示“额外额外”extra-time 8)fore-表示表示“在前面在前面”forehead,foretell,foresee9)in-,im-,表示表示“向内

10、，在内，向内，在内，”inland,invade,inside,import2.表示空间位置，方向关系的前缀表示空间位置，方向关系的前缀 2.表示空间位置，方向关系的前缀表示空间位置，方向关系的前缀 1)a-表示表示“在在之上之上”，“向向”aboard,aside,around2)by-表示表示“附近，邻近，边侧附近，邻近，边侧”byroad,byway,bypass(弯路弯路)3)inter-,intel-,表示表示“在在间，相互间，相互”international,interaction,internet4)mid-,表示表示“中，中间中，中间”midnight,mid-autumn10

11、)under-,表示表示“在在.下面，下的下面，下的”underline,underground,underwater 11)up-,表示表示“向上，向上面，在上向上，向上面，在上”upward,uphold,uphill(上坡上坡)1re-“又又,再再”reform,review,replace,remove,renew 2.pre“前前”preschool,pre-war,preview,precondition 3.post“后后”post-war,postgraduate,postdoctoral 4.tele远程远程telephone,telegraph,telescope 5.de

12、-向相反方向发展向相反方向发展devalue,defrost（解冻）（解冻）,degrade 6.trans-穿过，变穿过，变transform,transport,transplant,7.vice-副副 vice-premier,vice-president3.表示其他意义的前缀表示其他意义的前缀:8.ex-前任的前任的ex-wife,ex-president，ex-girlfriend 9.semi-半半 semi-final,semi-circle,10.bi 两两 bicycle,bilingual 11.tri三三 triangle,tricycle 12.multi-多多 mul

13、timedia,multicultural,13.kilo-千千 kilometer,kilogram 14.auto-自动的自动的 automobile,autograph,autobiography,automatically 15.eco-生态生态 ecosystem,eco-friendly 16.micro-小小 microwave,Microsoft,microscope 17.sub-次一级次一级/潜潜 subconscious,suburban,subway,subtropical,submarine,18.Sino-中国的中国的 Sino-Japanese,Sinopec 1

14、9.co-联合，伴同联合，伴同 cooperate,coexist,后后缀缀 例例 词词名名词词 able/possible/flexible/capable mean/regard/remain/ruin/custom arrive/survive/propose/refuse/approve America/Austrilia/private/apologize/difficult/brave/secure curious/anxious/real/major/cruel/safe farm,think,advise,teach act,sail,collect,invent,create

15、 exist/occur/differ/refer/prefer appear/accept/resist/perform/guide introduce/consume/describe/solve imagine/expect/relax/combine/liberate impress/conclude/decide/admit/confuse-bility-s-al-an-y-er-or-ence-ance-tion-ation-sion后后缀缀 例例 词词名名词词absent/confident/independent/defendmarry/short/store/pack/pas

16、swarm/true/dead/growplease/depart/expose/press/fail/mixdisappoint/encourage/improve/punishaware/lazy/weak/careless/unselfishfriend/champion/relation/scholarwise/free/kingmeaning/wedding/savings/sufferingsbelongings/surroundings/earningsdiscover/injure/rob/slave/recover/brave-ce-age-th-ure-ment-ness-

17、ship-dom-ing(s)-ry后后缀缀 例例 词词形形容容词词unavoid/knowlege/change/comfort/afford/forget/rely/believe/incure/value/physics,nation,politics,practiceattract/create/protect/compete/instructdead/cost/day/order/like/live/monthadventure/poison/danger/nutrition/ambitionhelp,use,care,thank,faithend/aim/limit/speech/

18、harm/value/worth/pricedirt/guilt/skin/mud/sun/chill/catch/scare/trouble/tire/handinfluent/commerce/benefit/office-able-al-tive-ly-(i)ous-ful-less-y-some-ial后后缀缀 例例 词词动动词词-(e)n-fy-izewiden,strengthen,lengthen,sharpensimplify,beautify,purify,classify,qualifyapologize,organize,realize,popularizesociali

19、ze,spicialize,normalize,industrialize后后缀缀 例例 词词副副词词-ly-down-ward(s)really,badly,perfectly,truly face-down,palm-down(手掌向下地手掌向下地)towards,forward,outward,backward后后缀缀 例例 词词数数词词-teen-ty-th fourteen,fifteen,eighteen forty,fifty,eighty fourth,fifth,eighth四、缩略法四、缩略法缩略法，即将单词缩写，词义和词性保持不变，主要有截头、去尾、截头去尾等形式。1.截

20、头截头 telephone-phone /aeroplane-plane2.去尾去尾examination-exam/laboratory-lab 3.截头去尾截头去尾 refrigerator-fridgeinfluenze-flu 4.截取：截取：motel/sitcom/FedEx/smog 首尾字母缩略法：首尾字母缩略法：即用单词首尾字母组成一个新词。读音即用单词首尾字母组成一个新词。读音主要有两种形式，即各字母分别读音；作为主要有两种形式，即各字母分别读音；作为一个单词读音。一个单词读音。1.very important personVIP 2.televisionTV 3.Test

21、ing of English as a Foreign Language TOEFL Practice(I):rain(形容词形容词)_ agree(反义反义)_ nation(形容词形容词)_ farm(人人)_ recent(副词副词)_ friend(形容词形容词)_ hope(形容词形容词)_ job(形容词形容词)_ visit(名词名词)_ access(形容词形容词)_ eight(八十八十)_ true(名词名词)_ kind(名词名词)_ China(形容词形容词)_按括号内的要求改写下列单词按括号内的要求改写下列单词rainynationalrecentlyhopefulv

22、isitoreightykindnessdisagreefarmerfriendlyjoblessaccessibletruthChinesePractice(II)用括号中所给单词的正确形式填空：用括号中所给单词的正确形式填空：1.Harry Potter is a boy who is full of _(imagine)2._(congratulate)!You have done so well in the game.3.I received a letter of _(invite)but I didnt accept it.4.His late _(arrive)made a m

23、ess of our plan.5.To the _(amaze)of the parents,their child can look after himself without their help.6.He did exercise to _(strong)his muscles.7.I went out to _(breath)the fresh air.8.Dont take his words _(serious);he was just kidding.9.The boy felt _ (comfort)with his new classmates,so he seldom s

24、poke.10.The _(popular)of foreign words is part of the Japanese interest in anything new.11.The boys _(usual)behavior puzzled the doctor.12.He _(like)those who are not well-behaved.13.He was _(formal)dressed in a blue silk shirt open to the neck.imaginationCongratulationsinvitation arrivalamazementst

25、rengthen breatheseriouslyuncomfortablepopularityunusual dislikes informallyPractice(III)用括号中所给单词的用括号中所给单词的否定否定形式填空：形式填空：1.It is _(legal)to drive after drinking alcohol.2._(lead)advertisement are not allowed by law.3.The _(expect)death of her son made her sad.4.He was scolded for his _(acceptable)beh

26、avior.5.If it is not _(convenient)to you,I should like to call on you tonight.6.He was unlucky.No matter what he does,he was always _(succeed)7.It was _(polite)of you to leave without saying goodbye.8.I am afraid I have to _(agree)with you on the issue.9.Paralympic Games(残奥会残奥会)are held for the _(ab

27、le).10.It was _(polite)of you to leave without saying goodbye.illegal Misleadingunexpectedunacceptableinconvenientunsuccessful impolite disagree disabled impoliteThank you for your listening !Practice(I):从右栏中找出适当的词与左栏搭配构成合成词从右栏中找出适当的词与左栏搭配构成合成词.booklookersnewfar first troubletenbabyoveremptya.reachingb.casec.minuted.classe.bornf.ong.handedh.eati.sitj.free