.,Discoveringusefulwordsandexpressions,LearningaboutLanguage,.,英語詞綴在英語語言的整個(gè)歷史發(fā)展過程中起著積極的作用。它不僅擴(kuò)充了英語詞匯，也豐富了語言的表達(dá)能力。我們學(xué)習(xí)英語要掌握大量的單詞，關(guān)鍵就在于掌握好英語詞綴。詞綴分為前綴(prefix)和后綴(suffix)兩種。,.,前綴，后綴詞義與詞性變化的普遍規(guī)律分別總結(jié)如下:一、前綴一般只改變詞義，而不改變詞性。如:natural(adj.自然的)unnatural(adj.不自然的)fasten(v.捆住)unfasten(v.打開)balance(n.平衡)unbalance(n.失衡),.,二、后綴不僅改變詞性，也改變詞義。如:invent(v.發(fā)明)inventor(n.發(fā)明者)safe(adj.安全的)safety(n.安全性)deep(adj.深的)depth(n.深度)press(v.按，壓)pressure(n.壓力)accurate(adj.準(zhǔn)確的，精確的)accuracy(n.準(zhǔn)確，精確度),.,1.-age為抽象名詞后綴，表示行為和狀態(tài)percentage百分?jǐn)?shù)，百分率shortage不足，缺少2.-cy表示抽象名詞accuracy準(zhǔn)確，精確度3.-ence、-ance表示性質(zhì)和動(dòng)作difference不同；influence影響，感化,4.-ency、-ancy抽象名詞后綴emergency緊急，急救；fluency流利，流暢5.-er表示人、者beginner初學(xué)者，創(chuàng)始人；reader讀者6.-ian表示人稱名詞physician醫(yī)師，內(nèi)科醫(yī)師；technician技術(shù)員,.,7.-ion由動(dòng)詞構(gòu)成的名詞occasion偶然原因，近因，時(shí)機(jī)8.-ist表示人稱名詞biologist生物學(xué)家；chemist化學(xué)家9.-logy表示學(xué)科morphology形態(tài)學(xué)；histology組織學(xué)10.-ment表示動(dòng)作，行為或具體事物measurement測量，量度；experiment實(shí)驗(yàn),.,11.-ness加在形容詞后構(gòu)成抽象名詞coldness寒冷；darkness黑暗12.-or表示人，物doctor醫(yī)生；monitor監(jiān)視器13.-th由形容詞構(gòu)成名詞length長度；width寬度；truth真理14.-ty表示性質(zhì)specialty特征,專業(yè)；responsibility責(zé)任,責(zé)任心,.,1.able表示可能的，可以的excitable易興奮的；acceptable易接受的2.al表示有的屬性typical典型的3.ant有些是從動(dòng)詞派生來的significant有意義的；important重要的,.,4.ent與ant同類consistent堅(jiān)定的；different不同的5.ful由名詞構(gòu)成形容詞useful有用的；successful成功的；plentiful豐富的；helpful有幫助的6.ible與able相同visible可見的；impossible不可能的,ambition,absence,suitable,beneficial,annoyed/annoying,Fillinthetablebelow.Youcanusethedictionarytohelpyou.,encouragement,psychological,noisy,firm,clumsy,.,1.Howdoyoumeasurethelengthofaraceroundaracetrack?,e.g.Shehascompletedsixlaps.她跑完六圈了。,Answereachquestionbyusingacorrectnewwordinthisunit.,lapn.(兩物)重疊部分，跑道的一圈，(人坐著時(shí))大腿的上方,.,2.Howwouldyoufeelifsomeonekepttalkingwhenyouweretryingtoread?,annoyedadj.頗為生氣的,.,3.Inwhatwaycanateachercheckifyouhavelearnedthenewwordsbyheart?,dictationn.口授，聽寫(的文字)e.g.Thepupilswroteattheteachersdictation.學(xué)生按照老師的口述寫下來。,.,4.Whatdoyoucallanitemwritteninadiaryorinadictionary?,entryn.項(xiàng)目，進(jìn)入，入口，詞條e.g.Theneweditioncontains5,000entries.,.,進(jìn)入，入場；出賽，參加(+into)e.g.HesupportedthatcountrysentryintotheEuropeanCommonMarket.入口；門口；河口；通道(+to/of)e.g.Theentryofthecavewashiddenbytrees.,.,5.Whatkindofinstrumentdoesadoctorneedtoexaminevirusesinblood?,microscopen.顯微鏡,.,6.Howdoyoudescribesomeonewhoishappytomeetnewpeople?,outgoingadj.外向的，友好的，外出的，離開的,.,7.Whatdoyoucallstudentsinthesameyeargroupandthesamesituationasyou?,fellowadj.同伴的，同類的n.同伴，同志，伙伴,.,8.Whatdoyoucallthebehaviorofonestudenttoothers?,conductn.行為，品行,.,Completethispassageusingthephrasesbelow.,Therewasatimewhenchildrenwithmentaldisabilitieswerepreventedfromlivinganormallife_.,inmanyways,.,Theyusedto_intheirownhomesafterbeingeducatedinspecialschools.Otherpeoplesometimes_them.Butnowthingsarechanging.Therearetrainingprogrammesforyoungpeoplewithmentaldisabilities,whichhaveprovedverybeneficial.,madefunof,sitaround,.,StudentslikeXieLi,mentallydisabledfrombirth,nowhaveachancetobecomeathletes.Butitisachallenge.Shehasto_trainingprogrammesaswellasmixingwithotherable-bodiedathletes.“XieLisconfidencehasgrown,”saidherfather.,adaptto,.,“Shelooksmuchbetterandisnotsooften_afterhertraining._hermotherandIareveryhappywithherprogress.”So,insteadof_mainstreamactivities,mentallydisabledstudentscanbecomepartofthemainstream._,theycanleadamorefulfillinglife.,outofbreath,Allinall,cuttingout,Inotherwords,.,Languagepoints,.,Therewasatimewhenchildrenwithmentaldisabilitieswerepreventedfromlivinganormallifeinmanyways.,Therewasatimewhen,1.此句中when引導(dǎo)定語從句修飾先行詞atime。表示“一段的時(shí)間”。e.g.TherewasatimewhenIhatedtogotoschool.,werepreventedfromliving,.,2.preventfromdoingsth.表示“阻止干某事”,3.livealife表示“過的生活”，也可為leadalife.,.,IngroupsmakeshortdialogueaboutXieLisprogress.WhatwouldyousayusingthephrasesinExercise3?,S1:AllinallXieLisconfidencehasgrown.Inotherwordssheismoreoutgoing.,S2: