Basic Writing Skills.ppt

BasicWritingSkillsContentsDefinitionDefinitionWarm-upActivityTermSummarySummaryExtendedDefinitionAretheygooddefinitions?PitfallsandStrategiesWritingTechniques1、定义公式（DefinitionFormula）
2、定义中的被动态从句
3、定义中的主动态从句
4、不用关系从句的定义句
5、特殊定义句
6、扩展定义

1.定义公式（DefinitionFormula）在进行写作时可以把device细分成4类，即apparatus,instrument,machine,tool在进行写作时可以把device细分成4类，即apparatus,instrument,machine,tool主语只能用单数不能用复数，如果用复数则成为一般性描述（generaldescription）,而不是定义。
2.定义中的被动态从句2.定义中的被动态从句3.定义中的主动态从句主动语态从句中的wh-word+verb结构可以变换为verb+ing而使句子缩短。
4.不用关系从句的定义句5.特殊定义句由以上例子可以看出，特殊定义句中在动词be之后，必须有普通类别词（generalclassword），在大多数情况下，这个普通类别词是和主语中的相同，但有时也例外。如：
6.扩展定义6.扩展定义6.扩展定义comparisonandcontrastWarm-upactivity:Pleasefindoutthesimilaritiesanddifferencesinthefollowingtwopictures:Comparisonorcontrastparagraphsareusedtoshowsimilaritiesordifferencesbetweentwothings.
Acomparisonparagraphfocusesonsimilarities,whileacontrastparagraphondifferences.
Comparisonandcontrastarefrequentlycombinedtogiveafulltreatmentofatopic.However,Aparagraphusuallyconcentratesonlyonsimilaritiesordifferences,notbothatthesametime.ThepurposesofComparisonandContrastThesignalwordsofcomparisonSomesampleexpressions:
ThereareseveralsimilaritiesbetweenAandB.
AandBhavethesameviewoftheworld.
AandBhavealotincommon.
IncommonwithA,Bprefersmeattofish.
AresemblesBinthatAisalsointerestedincollectingstamps.
JustasAlikestobequiet,Blikestostayalone.
LikeA,Blikesoutdoorsports.
Alikesswimming.ThesamewithA,Balsolikesswimming.
AandBarethesameinthattheybothlikeswimminginthesea.
AandBhavethesameinterests.
Alikesswimminginapond;similarly,Blikesswimminginthesea.
BothAandBhavelonghair.
Alikesfishing.Blikesfishing,too.
Alikesswimming,sodoesB.ThesignalwordsofcontrastSomesampleexpressions:
UnlikeA,Blikesoutdoorsports.
IncontrasttoA,Blikesoutdoorsports.
DifferentfromA,Blikesoutdoorsports.
ContrarytoA,Blikesoutdoorsports.
AsopposedtoA,Blikesoutdoorsports.
AisdifferentfromBinthatBlikesoutdoorsports.
AdiffersfromBinthatBlikesoutdoorsports.
AcontrastswithBinthatBlikesoutdoorsports.
Alikes