chapter two topic sentence

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1、ChapterTwoTopicSentenceIPartsofatopicsentenceStructurally,thetopicsentenceiscomposedoftwoparts:thetopicandthecontrollingidea.Thetopiciswhataparagraphisabout,orwhataparagraphdiscusses;thecontrollingideaiswhatthewriterintendstocommunicateaboutthetopic.Inotherwor

2、d,controllingideaisusedtolimitthetopic.IIWhatisagoodtopicsentence?Agoodtopicsentenceisneithertoogeneralnortoospecific.Example1：InHemingway'sstory“Soldier’sHome”，KrebtellshismotherthathewantsnopartofGod'sKingdom．这个句子太具体以至于无东西可写，无法展开段落。Example2：Letmetellyousomet

3、hingaboutoverpopulation．这个句子太笼统，作为一个段落的主题太大，难于驾驭。Example3：Whyhastheworldpopulationbeenincreasingsorapidlyinthelastdecades？这个句子是个较好的主题句，作者用“thereasonsforoverpopulationinthelastdecades”，从“原因”（cause）和“时间”（time）两方面限制了主题，能在一个段落内论述。Exercise:Examinethefollowingtopics

4、entences,italicizethetopicandunderlinethecontrollingideainthefollowingsentences.:1.Whenyoubuyacar,examinecarefullytheimportantfeatureofthemodelyouareconsidering.2.Theadolescenthadthreepsychologicalproblems.3.Mygrandparentsstillfollowmanyoftheirnationalcustoms.

5、4.Thistermseveralusefulandinterestingcourseshavebeenoffered.Key1.Whenyoubuyacar,examinecarefullytheimportantfeatureofthemodelyouareconsidering.2.Theadolescenthadthreepsychologicalproblems.3.Mygrandparentsstillfollowmanyoftheirnationalcustoms.4.Thistermseveralu

6、sefulandinterestingcourseshavebeenoffered.IIIFunctionsoftopicsentencesSeveralpointstobeclearaboutthefunctionsoftopicsentence：1)Ittellsreaderswhattheparagraphisabout.2)Itdisplaysthewriter’sviewpoint,andalldetailsinothersentencesshouldbearoundthisviewpoint.3)Itt

7、ellsreaderswhattheycananticipatefromthisparagraphbyincludingthecontrollingidea.4)Amongallthesentencesintheparagraph,thetopicsentenceisthemostgeneralized.*Lookatthefollowingtopicsentencesanddecidewhatyoucanexpectfromeachsentence?(Maketopicwordsred,controlling

8、ideablue)Example1Bluejeans,nowpopulararoundtheworld,weredevelopedbyaGerman-bornJewnamedLeviStrauss.(Fromthisparagraph,thereaderissupposedtoknowhowbluejeansweredeveloped.)Example2Be