詞根9pre表示“….前的,預(yù)先”（8個(gè)）pre系列pre系列preambleprerogativeprepositionpredictprecaution1.preamblen.序言，緒論，導(dǎo)言pre前；預(yù)先+amble行走→〔話語(yǔ)〕在先→前言，序言2.prefixn.（語(yǔ)法）前綴；前置代號(hào)pre前，預(yù)先+fix固定→固定在〔單詞〕前面→前綴3.prerogativen.特權(quán)，優(yōu)先權(quán)pre前，預(yù)先+rog要求+ative有…傾向（性質(zhì)）的→可以預(yù)先要求→特權(quán)4.prepositionn.介詞pre前，預(yù)先+posit放+ion表物→放在前面的〔詞〕→前置詞5.predictv.預(yù)言，預(yù)告，預(yù)報(bào)pre前，預(yù)先+dict說(shuō)，斷言→預(yù)言，預(yù)告6.preconditionn.先決條件，前提pre前，預(yù)先+condition條件→前提7.precludev.阻止，妨礙，排除pre前，預(yù)先+clud關(guān)閉+e→在前面關(guān)閉→阻止8.precautionn.預(yù)防措施，預(yù)防，防備pre前，預(yù)先+caution小心→預(yù)先小心→預(yù)防詞根9pre表示“….前的,預(yù)先”（8個(gè)）1.preamblen.[’pri??mbl]序言，緒論，導(dǎo)言，前言，開(kāi)場(chǎng)白preamblepreamble詞義anintroductiontoabookorawrittendocument;anintroductiontosthyousay序言，緒論，導(dǎo)言，前言，開(kāi)場(chǎng)白preamblepreambleTheaimsofthetreatyarestatedinitspreamble.條約的宗旨已在序言中說(shuō)明。Shegavehimthebadnewswithoutpreamble.她開(kāi)門(mén)見(jiàn)山地把壞消息告訴了他。你的感悟：

2.prefixn.[’pri?f?ks]前綴；前置代號(hào)反義詞：suffixprefixprefix詞義(grammar）aletterorgroupoflettersaddedtothebeginningofawordtochangeitsmeaning,suchasuninunhappyandpreinpreheat（語(yǔ)法)前綴（綴于單詞前以改變其意義的字母或字母組合）aword,letterornumberthatisputbeforeanother前置代號(hào)（置于前面的單詞或字母、數(shù)字）反義詞：suffixn.后綴prefixprefixCarinsurancepolicieshavetheprefixMC(formotorcar).汽車(chē)保險(xiǎn)單標(biāo)有MC代號(hào)（表示汽車(chē)）。TotelephonefromtheUSusetheprefix01133beforethenumbersgivenhere如果從美國(guó)打電話，就要在所給號(hào)碼前加撥01133。你的感悟：3.prerogativen.[pr?’r?ɡ?t?v]特權(quán)，優(yōu)先權(quán)同義詞：privilegeprerogativeprerogative詞義arightoradvantagebelongingtoaparticularpersonorgroupbecauseoftheirimportanceorsocialposition特權(quán)，優(yōu)先權(quán)同義詞：privilegen.特殊利益，優(yōu)惠待遇prerogativeprerogativeInmanycountrieseducationisstilltheprerogativeoftherich.在許多國(guó)家接受教育仍然是富人的特權(quán)。Constitutionalchangesareexclusivelytheprerogativeoftheparliament.修改憲法是議會(huì)獨(dú)有的權(quán)力。你的感悟：4.prepositionn.[?prep?’z??n]介詞派生詞：prepositionalprepositionpreposition詞義awordorgroupofwords,suchasin,from,to,outofandonbehalfof,usedbeforeanounorpronountoshowplace,position,timeormethod介詞派生詞：prepositionaladj.前置詞的【例句感悟】1）Thewordispoundedofaprepositionandaverb.這個(gè)詞是由一個(gè)介詞和一個(gè)動(dòng)詞復(fù)合而成的。2）Youshouldcancelthisprepositioninthesentence.你應(yīng)該刪去句子中的這個(gè)介詞。你的感悟：5.predictv.[pr?’d?kt]預(yù)言，預(yù)告，預(yù)報(bào)派生詞：predictionpredictpredict詞義saythatsthwillhappeninthefuture預(yù)言，預(yù)告，預(yù)報(bào)派生詞：predictionn.預(yù)言，預(yù)測(cè)，預(yù)告【例句感悟】1）Itisimpossibletopredictwhatwillhappen.預(yù)知未來(lái)的事是不可能的。2）Thelatestopinionpollsarepredictingaveryclosecontest.最近的民意測(cè)驗(yàn)預(yù)測(cè)競(jìng)爭(zhēng)將會(huì)非常激烈。【練習(xí)典例】閱讀能力強(qiáng)的人會(huì)利用上下文及推測(cè)來(lái)理解文意。Skilledreadersmakeuseofcontextand（predict）.答案：prediction你的感悟：6.preconditionn.[?pri?k?n’d??n]先決條件，前提preconditionprecondition詞義Ifonethingisapreconditionforanother,itmusthappenorbedonebeforethesecondthingcanhappenorexist.先決條件，前提【例句感悟】1）Aceasefireisanessentialpreconditionfornegotiation.?；鹗钦勁械谋匾疤帷?）Peaceisthepreconditionandguaranteefordevelopment.和平是發(fā)展的前提和保障。你的感悟：

7.precludev.[pr?’klu?d]使行不通，阻止，妨礙，排除precludepreclude詞義preventsthfromhappeningorsbfromdoingsth;tomakesthimpossible行不通，阻止，妨礙，排除【例句感悟】1）Lackoftimeprecludesanyfurtherdiscussion.由于時(shí)間不足，不可能進(jìn)行深入的討論。2）Apriorengagementwillprecludemefroming.我因有約在先，不能來(lái)了?！揪毩?xí)典例】英語(yǔ)不好有時(shí)會(huì)讓他們找不到工作。InsomecasespoorEnglish（preclude）themfromeverfindingajob.答案：precluded你的感悟：8.precautionn.[pr?’k???n]預(yù)防措施，預(yù)防，防備precautionprecaution詞義somethingthatisdoneinadvanceinordertopreventproblemsortoavoiddanger預(yù)防措施，預(yù)防，防備積累詞組safetyprecautions安全防范措施precautionsagainstfire防火措施【例句感悟】1）Youmusttakeallreasonableprecautionstoprotectyourselfandyourfamily.