化学专业英语-前言.ppt

*SpecialEnglishforChemistry(SEC)ShiyouHaoEmail:,Tel:697217XingzhiCollegeZhejiangNormalUniversity1.WhydowelearnSEC?*通过学习专业英语词汇、语法和结构，为将来从事化学化工方面英文资料查阅、翻译和写作打下坚实的基础。01跟踪所学领域的最新研究进展，通过英文文献熟练获取和共享信息资源。02学术交流的工具。032.ABriefIntroductiontoSEC*01TheDefinitionofSEC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。SEC≠基础英语＋专业词汇020304化学专业英语与基础英语的区别：科技内容特有的词汇、语法和文体05063.SomeFeaturesofSEC*a.Passivisation（被动语态多）ThereisatendencyinSECwritingtousethepassiveconstructionmoreoftenthaningeneralwriting.Passivevoiceoccursmorefrequentlyinwritingofscientificpapers.Thepassivewayofsayingthingispreferred.0102Reasons*Whatweconcernaboutisthefactratherthanthepeople.e.g.Asourviews,purewatercanbeobtainedfromtheseawater.Thesubjectismoreattractive.e.g.Distillationisbasedonthefactthatthevaporofaboilingmixturewillbericherinthecomponentsthathavelowerboilingpoint.Thepassivesentenceisconcise.e.g.Chemistryisusedinmanydifferentfields.Peopleusechemistryinmanydifferentfields.Sothepassivesentencescanbeusedtogivethenecessaryinformationinthebestpossiblewayimpersonally,concisely,objectively.b.Adjectiveclauses（后置定语多）AnimportantstructurethatrecursinSECistheuseofrelatives,forthereasonthatscientificwritingtendtodefineordescribethings,whichrequiresthefrequentusingofadjectives,adjectiveclauses(clauseor–ing).Example*Besides,isomerization(异构化)processmayalsotakeplacewhichinturnleadstootherfairlycomplicatedreactions.此外，还会发生异构化过程，从而相继导致其它相当复杂的反应发生。Example*Inadditiontoaliphaticcompounds,thereareanumberofhydrocarbonsderivedfrombenzeneandseemedtohavedistinctivelydifferentchemicalproperties.除了脂肪族化合物外，还有许多从苯衍生而来，看来具有明显不同化学性质的烃。c.Longsentences（长句多）Inordertodescribemoreprecisely,logically,andclearly,longsentencesareof