提高英语的读写能力拉丁希腊语词根课件.ppt
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1、Susan Ebbers 20051NoImageEnglish Words from Latin&Greek Increase spelling,vocabulary,and reading comprehensionSusan Ebbers 20052How many words are there in the English Language?The Second Edition of the Oxford English Dictionary contains full entries for 171,476 words in current use,and 47,156 obsol
2、ete words.To this may be added around 9,500 derivative words included as subentries.Over half of these words are nouns,about a quarter adjectives,and about a seventh verbs;the rest is made up of interjections,conjunctions,prepositions,suffixes,etc.These figures take no account of entries with senses
3、 for different parts of speech(such as noun and adjective).Susan Ebbers 20053Yea,yea,so get to the point This suggests that there are,at the very least,a quarter of a million distinct English words,excluding inflections,and words from technical and regional vocabulary not covered by the OED,or words
4、 not yet added to the published dictionary,of which perhaps 20 per cent are no longer in current use.If distinct senses were counted,the total would probably approach.Susan Ebbers 20054Are you ready for this?three quarters of a million 750,000 Thatsalotawords!Susan Ebbers 20055Real world demands.Onl
5、y 30%of 4th graders are proficient readers National Assessment of Educational Progress(NAEP 2007)42 million adults in the US are functionally illiterate,meaning that cant read the front page of the newspaper.(NAEP 2007)Lack of vocabulary can be a crucial factor underlying the school failure of disad
6、vantage students(Becker,1977;Bielmiller,1999).Susan Ebbers 20056 The average sixth grade student knows approximately 25,000 words.The average high school graduate knows approximately 50,000 words.This means that average students learn roughly 2000-3,000 words a year(Graves,2007).This translates to 8
7、 words a day,7 days a week,52 weeks a year-including weekends or summers.Shrinking personal vocabulariesSusan Ebbers 20057Some specifics on the importance of vocabulary Growing up in poverty can seriously restrict the vocabulary children learn before beginning school and make attaining an adequate v
8、ocabulary a very challenging task(Coyne,Simmons,&Kameenui,2004;Hart&Risley,1995).Less advantaged students are likely to have substantially smaller vocabularies than their more advantaged classmates(Templin,1957;White,Graves,&Slater,1990).Susan Ebbers 20058It is estimated that by age 3,some less adva
9、ntaged students have heard 30 million fewer words than their more advantaged peers.It is also estimated these students vocabularies may be half the size of those of their more advantaged counterparts (Hart and Risely 2003&Graves,2007).Susan Ebbers 20059Bet cha didnt know In California they determine
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