专业英语1-前言

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1、Chapter1.PrefaceSpecialEnglishforChemistry(SEC)ABriefIntroductiontoSEC杨正龙SchoolofChemistryandMaterialsScienceLudongUniversity2Preface•1.1TheDefinitionofSEC1.2Whydowelearnthe化学专业英语是一种用英语阐述化学科学中的理论、技术、实验和现象的英语体系。specialEnglish?34•通过学习专业英语词汇、语法和结构，为将来FinalScore从事化学化工方面英文资

2、料的查阅、翻译和写作打下坚实的基础。•SignIn•跟踪所学领域的最新研究进展，通过英文文献•RandomTest熟练获取和共享信息资源。•Homework•Finalexam•学术交流的工具。5611.3SomeFeaturesofSEC1.3SomeFeaturesofSEC1.Passivisation（被动语态多）SEC≠基础英语＋专业词汇ThereisatendencyinSECwritingtousethepassiveconstructionmoreoften化学专业英语与基础英语的区别：thaningeneralwr

3、iting.Passivevoiceoccursmorefrequentlyinwritingof科技内容scientificpapers.Thepassivewayof特有的词汇、语法和文体sayingthingispreferred.78Reasons¾Whatweconcernaboutisthefactratherthanthepeople.•Sothepassivesentencescanbee.g.Asourviews,purewatercanbeobtainedfromtheseawater.usedtogivethe

4、necessary¾Thesubjectismoreattractive.informationinthebestpossiblee.g.Distillationisbasedonthefactthatthevaporofawayimpersonally,concisely,boilingmixturewillbericherinthecomponentsthathavelowerboilingpoint.objectively.¾Thepassivesentenceisconcise.e.g.Chemistryisusedinma

5、nydifferentfields.Peopleusechemistryinmanydifferentfields.910Example2.Adjectiveclauses（后置定语多）AnimportantstructurethatrecursinSECBesides,isomerizationprocessmayistheuseofrelatives,forthereasonthatalsotakeplacewhichinturnleadstoscientificwritingtendtodefineordescribeothe

6、rfairlycomplicatedreactions.things,whichrequiresthefrequentusingofadjectives,adjectiveclauses(clauseor–ing).此外，还会发生异构化过程，继而导致其它相当复杂的反应发生。11122Example3.Longsentences（长句多）Inadditiontoaliphaticcompounds,thereareanumberofhydrocarbonsInordertodescribemorederivedfrombenzenea

7、ndseemedtohavedistinctivelydifferentchemicalproperties.precisely,logically,andclearly,longsentencesareoften除了脂肪族化合物外，还有许多从苯employedinSEC.衍生而来，看来具有明显不同化学性质的烃。aliphatic脂肪族的aromatic芳香族的1314ExampleExample•Thegeneralmechanismforcoatingdegradation•Wecanthereforeconcludethatw

8、hentheandsubstratecorrosionischaracterizedbyandistancebetweenthemoleculesisveryincreaseinelectrolyteuptake,developmen