派生(构词法及应用)课件

派生(derivation)前缀(prefix)&后缀(suffix)派生(derivation)前缀(prefix)&后缀(1复习构词法之一——派生，了解前缀和后缀的作用学习常见的前缀和后缀应用：①语法填空②阅读理解中猜词义学习目标复习构词法之一——派生，了解前缀和后缀的作用学习目标2able____________________________反adv.vt.反adj._______able__________________________3Lead-inableunableablyenabledisable反adv.vt.反adj.disabled派生法：由词缀（分前、后缀）和词根相结合构成新单词的方法。Lead-inableunableablyenabledis4加前缀：happy→

unhappy

加后缀：

develop→development既加前缀又加后缀：

forget

→

unforgetable派生词加前缀：派生词5前缀表否定：dis-,in-,im-,ir-,il-,un-,non-

dislikeincorrectimpolite

irregularillegalunlike

non-stopover-：超过，超出

overweightoverwork

oversleep前缀表否定：dis-,in-,im-,ir-,il-6mis-：错误

misunderstandmisdore-：再，又

rewritereusepre-：先于...

previewprepayfore-：前,预先

foreheadforecastmis-：错误7后缀1.

名词后缀：表人：-er,-or,-istworker

actor

artistadj.→n.:-nesssadness

darknessv.→n.:-t/-te→-tionact→action

invent→inventionv.→n.:-mentdevelopment

movement后缀1.名词后缀：82.形容词后缀：-ful：充满...的

carefulharmful

-less:缺少...的

carelessharmless

-ive：有...倾向的

effectiveattractive

-able：可以/能够...的

buyableenjoyable2.形容词后缀：9-ed：①(人)感到...的annoyed

②表被动writtenwords

③表完成boiledwater-ing：①令人...的annoying②表主动thedancinggirl③表进行中boilingwater-ed：①(人)感到...的annoyed103.副词后缀：-ly:quicklyequallyPS：并非全部-ly结尾的词都是副词：lovely可爱的friendly友善的likely可能的lonely孤独的4.动词后缀-en：使...

deep→deepen

wide→widen有时en-：enableenlargeenrich3.副词后缀：11思考：前缀和后缀分别改变的原词的什么？possible→

impossibleinvent→

invention

前缀后缀词性意思思考：前缀和后缀分别改变的原词的什么？12Task1valuev.→________

有价值的entertainv.→________n.likelyadj.→反义：_______

readv.→________误读appearv.→________消失joyn.→________adj.broadadj.→________vt.拓宽，拓展helpn.→________adj.无助的valuable-mentun-dis-mis--fulen--lessadj.娱乐adj.不可能的v.v.快乐的，高兴的Task1valuev.→________有价值13Task2分析画线词的词性和词义。

Thispossibilitywasunforeseeable，becauseitalmos

tneverhappened.unforeseeable

un

fore

see

able不预先看见可以…的adj.不可预见的方法:拆分单词Task2分析画线词的词性和词义。unforeseeabl14常见的猜词义题目:1.

TheunderlinedwordXXX

means/refersto/standsfor_________.2.

ThewordXXX

canbe

replacedby

“_________”.

3.What’sthemeaningofXXX?4.Whichofthefollowingistheclosestinmeaningto

XXX?常见的猜词义题目:151.RememberthatPeopleonlinemaynotbewhotheyseem.Becauseyoucan'tseeorevenheartheperson.Itwouldbeeasyforsomeonetomisrepresent

himselforherself.Thussomeonewhosaysthat"sheisa12-year-oldgirl."couldreallybeanoldman.

A.makeawrongjudgement(判断)about

B.understandsomebodywrongly

C.giveawrongdescription(描写)of

D.formawrongopinionabout∨Task3mis-错误representvt.陈/描述1.RememberthatPeopleonlin162.Don’tlistentohisnonsense.

A.meaninglesswords

B.

beautifulwords

C.meaningfulwordsD.unpleasantwords3.Helivedahardlifeinpre-liberation

days.

A.beforeliberation

B.

afterliberation

C.sinceliberationD.duringliberation

∨∨non-:非，无sensen.意义pre-:在...之前liberationn.解放2.Don’tlistentohisnonsens174.Shopsareveryovercrowded

now.

A.busy

withmuchwork

B.havingtoomanypeople

C.fullofenergy

D.toocomplicatedtounderstand5.Hewasperformingandhistechniquewasunbelievable.

A.canbetrustedB.veryexcitingC.veryattractive D.difficulttobelieve;verygoodun-表否定believev.相信-ableadj.能...的∨∨over-过度crowdv.拥挤-edadj.4.Shopsareveryovercrowded18Task4运用所学知识，完成语法填空练习。解题方法：

1、阅读全句，正确理解句义及所缺词词义。

2、分析缺词担任的句子成分，正确判断词性。(如动词、名词等)

3、判断缺词应采用的正确词形。(如动词的形式、名词的单复数等)Task4运用所学知识，完成语法填空练习。19

Withoutproperplanning,tourismcancauseproblems.Forexample,toomany________(tour)cancrowdpublicplaces,whicharenotso_________(enjoy)forpeoplelivingthere.

Iftourismcreatestoomuchtraffic,peopletherewillbecome_______(annoy)andunhappy.Theybeginto_______(like)touristsandtotreatthem_______(politely).Theyforgethow_______(help)tourismcanbetothecountry’seconomy.-ed-ableimpolitely-istsdis--fulWithoutproperplanning,20Itisimportanttothinkabouthow

tourismaffectsthepeopleofadestination

(目的地)country.The_______(develop)oftourismisquitebeneficial,sinceitcanhelpacountrykeepthecustomsandbeautythatare_______

(attract)totourists.

Itwillalsoadvancethewealthand________(happy)oflocalpeople. Toomuchtourismcanbeaproblem.Iftourismgrowstoo________(quick),peoplemustleaveotherjobstoworkinthetourismindustry.Thismeansthatotherpartsofthecountry’seconomycansuffer.-ment-ivehappiness-lyItisimportanttothinkab21Exerciseonthepaper.ExerciseonP28,Workbook.HomeworkExerciseonthepaper.Homework22Thanks!Thanks!23 Youthisakindofwealth.Itwillgradually______(appear)withtimeelapsing(流逝).Whatcanwedoisnottowastetheyouth.Inmyopinion,foronething,itistorealizeourvalue,ouridea.Whenweareyoung,wehavethebestconditionsinourlives,goodmemories,good________(understand)andsoon.

Weshouldmakefulluseoftheseconditionstostudymore.

Foraother,weshould______

(rich)ourlives,makethem______(color)andandgatherasmanydifferentexperiencesaspossible.1dis--ingsen--ful Youthisakindofwealth.It24

Teenagers’secretsshouldbekepttothemselves,andnooneelse,

includingtheirparents,hastherighttosticktheirnosesintothechildren’sprivatelife.Asweknow,teenagersaregoingthroughaspecialperiodof_________(develop)bothphysicallyand_________(psychological).Theyarecuriousaboutandpuzzledbythe

_________

(expect)changesintheirbodyandmind.What’smore,exposedtoaworldofadults,itisonlytoo_________(nature)forthemtobeginimitatingadults’behaviorinsecret.Boysbegintosmokeandgirlsbegintospendtimedoingtheirhair.2unexcepted-ment-lynatur