化学专业英语-前言

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1、SpecialEnglishforChemistry(SEC)ShiyouHaoEmail:sky54@zjnu.cn,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。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。学术交流的工具。22.ABriefIntroductiontoSECTheDefinitionofSEC化学专业英语是一种用英语阐述化

2、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33.SomeFeaturesofSECa.Passivisation（被动语态多）ThereisatendencyinSECwritingtousethepassiveconstructionmoreoftenthaningeneralwriting.Passivevoiceoccursmorefrequentlyinwritingofscientificpapers.Thepassivewayofsaying

3、thingispreferred.4ReasonsWhatweconcernaboutisthefactratherthanthepeople.e.g.Asourviews,purewatercanbeobtainedfromtheseawater.Thesubjectismoreattractive.e.g.Distillationisbasedonthefactthatthevaporofaboilingmixturewillbericherinthecomponentsthathavelowerboilingpoint.Thepass

4、ivesentenceisconcise.e.g.Chemistryisusedinmanydifferentfields.Peopleusechemistryinmanydifferentfields.5Sothepassivesentencescanbeusedtogivethenecessaryinformationinthebestpossiblewayimpersonally,concisely,objectively.6b.Adjectiveclauses（后置定语多）Animportantstructurethatrecurs

5、inSECistheuseofrelatives,forthereasonthatscientificwritingtendtodefineordescribethings,whichrequiresthefrequentusingofadjectives,adjectiveclauses(clauseor–ing).7ExampleBesides,isomerization(异构化)processmayalsotakeplacewhichinturnleadstootherfairlycomplicatedreactions.此外，还会发

6、生异构化过程，从而相继导致其它相当复杂的反应发生。8ExampleInadditiontoaliphaticcompounds,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。9c.Longsentences（长句多）Inordertodescribemoreprecisely,logically,andclear

7、ly,longsentencesareoftenemployedinSEC.10Wemustthereforeconcludethatwhenthedistancebetweenthemoleculesisverysmall,thereareforcesofrepulsionandthattheseforcesincreaserapidlyasthedistancebetweenthemoleculesdecrease.因此我们可以得出这样一个结论：当分子间距离很小时，分子间存在排斥力，并且随着距离的进一步缩短，排斥力会快速增大。从句套用现

8、象Example11Thegeneralmechanismforcoatingdegradationandsubstratecorrosionischaracterizedbya