Analysis of the Advantages and Drawbacks of PPP Approach in Teaching Grammar of a Second Language     

宋湛文 《海外英语》2014,(9)

This paper is aiming at analyzing the advantages and disadvantages of PPP approach in teaching L 2 grammar. PPP ap-proach, referring to the method of Presentation, Practice and Production, is one of th...  相似文献   

In vitro antioxidant activity and potential inhibitory action against α-glucosidase of polysaccharides from fruit peel oftea (Camellia sinensis L.)简   总被引：1，自引：0，他引：1  

Yue-fei Wang  Jie Wang  Jing Wu  Ping Xu  Yi-qi Wang  Jun-jie Gao  Danielle Hochstetter 《Journal of Zhejiang University. Science. B》2014,15(2):173-180

The conditions for extracting polysaccharides from tea (Camellia sinensis L.) fruit peel (TFPPs) were studied. Three parameters (temperature, time, and liquid/solid ratio) affecting the extraction of TFPP were optimized using response surface methodology (RSM). Under the optimized conditions, the yield of TFPP was predicted to be 4.98%. The physicochemical properties, in vitro antioxidant activities, and inhibitory effects on α-glucosidase of fractionated TFPPs (TFPP-0, TFPP-20, TFPP-40, and TFPP-60) were investigated. We found that the TFPPs were all acid protein-bound heteropolysaccharides, although with different chemical compositions. They had not only remarkable scavenging activity on 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) and reducing activity, but also excellent inhibitory potential against α-glucosidase in vitro. Our results suggest that tea fruit peel could be treated as a potential bioresource for the development of polysaccharide antioxidants.  相似文献   

浅析英语写作中的可理解性输出     

王松 《教育文化论坛》2014,6(4):56-59

本研究旨在探讨可理解性输出在提高大学生英语写作中的作用。该研究对象为贵州大学英语专业的二年级学生,受试学生被分为控制组和受试组。研究者在实验期间对控制组的学生按照该课程规定的教学大纲和教学计划进行日常授课及布置相关练习,而对受试组的学生除了日常授课之外,在巩固操练环节则根据他们的实际水平及需要布置相应的可理解性输出。结果发现,可理解性输出能激发学习者的元语言功能,提高他们的认知效率和语用能力,是把陈述性知识储量转化为实际写作能力的重要过程。  相似文献   

两个完全二部图的匹配和的L(2,1)-标号     

董晓媛  徐礼礼  马登举 《南阳师范学院学报》2014,(3):1-3

研究了两个均同构于完全二部图Km,n的图G1=(X1,Y1)与G2=(X2,Y2)的匹配和Bm,n的L(2,1)-标号问题,得到了下面的结果:(1)若X1中元素完全与X2中元素相匹配且m,n>3,则Bm,n的L(2,1)-标号数为m+n;(2)若X1中元素不完全与X2中元素相匹配且m,n>6,则Bm,n的L(2,1)-标号数为m+n+1.  相似文献   

新发现绿野堂《歧路灯》抄本刍议     

王冰 《南阳师范学院学报》2014,(5):39-43

新见绿野堂《歧路灯》抄本20卷,105回,除卷首有一段交代作者李海观生平、堂号、诗作的文字外,与上图抄本相比还有明显的增删,尤以第八回、第九回和第十回中较为突出。在语言上绿野堂抄本更多地使用书面词语,富于文采。绿野堂抄本应和安定筱斋抄本、洛阳民国石印本等一样,同属于国图抄本系统。  相似文献   

基于数据库的中国英语教学领域二语习得理论应用状况考察     

朱红 《辽宁教育行政学院学报》2014,(3):67-71

依据CNKI中国期刊全文数据库,考察语言对比分析、偏误分析、中介语理论在我国英语教学领域的应用情况,得出的结论为:我国英语教学领域二语习得理论应用研究相对落后;二语习得理论更新慢;理论术语不严谨;改进旧理论或创立新理论意识不强等。二语习得理论应用和研究的不足是中国"哑巴英语"现象产生的主要原因之一。重视国外二语习得理论方法的学习和借鉴,重视科学理论指导下的英语课堂教学是提高英语教学质量,提高学生英语运用能力的有效手段之一。  相似文献   

论二语习得中母语的正迁移   总被引：3，自引：0，他引：3  

吴利琴 《阜阳师范学院学报(社会科学版)》2003,(5):59-60

语言迁移是语际错误研究的中心话题。母语迁移在二语习得中既有消极的一面,也有积极的一面。本文从母语迁移在二语习得中的积极作用出发,探讨了母语迁移与二语习得的关系,并提出了对母语迁移的再认识。  相似文献   

A communication approach to the acculturation process: A study of Korean immigrants in Chicago     

Young Yun Kim 《Int J Intercult Relat》1978,2(2):197-224

This paper explores a theoretical and methodological basis for studying foreign immigrants' acculturation processes from a communication perspective. Communication patterns of immigrants are conceptualized on three levels — behavioral, attitudinal, and perceptual. The behavioral level of communication includes the immigrant's participation in communication channels of the host society as well as the ethnic community. The perceptual level refers to the immigrant's cognitive structure in perceiving the host society. The attitudinal level is examined by the immigrant's affective-evaluative orientation toward the host society. The three levels of communication patterns were empirically investigated in a survey of 400 randomly selected Koreans in the Chicago area. The communication variables were assessed through composite scores using questionnaire items that were tested for reliability. The results show an overall linear trend in the immigrant's interethnic communication with Americans, positive attitude toward Americans, cognitive complexity in perceiving the American society, and satisfaction level. A simultaneous increase is observed in the immigrant's interpersonal communication with Americans and with other Koreans. The immigrant's use of ethnic media rapidly decreases over the years while that of American media steadily increases. Findings are discussed in comparison to previous studies of foreign immigrants and students and to sociological theories of acculturation of minority groups.  相似文献   

Sensitivity to orthographic structure in educable mentally retarded children     

Richard L. Allington 《Contemporary educational psychology》1981,6(2):135-139

Thirty educable mentally retarded (EMR) children were presented an item selection task to assess their sensitivity to orthographic structure in printed English words. Analyses of performance indicated that EMR children do acquire implicit knowledge of orthographic rules and that this ability is related to the development of reading skills.  相似文献   

Reciprocity of inter-ethnic attitudes in a multicultural society     

J.W Berry  Rudolf Kalin 《Int J Intercult Relat》1979,3(1):99-111

A national survey of multicultural and ethnic attitudes in Canada was conducted in 1974 (n = 1849). Data were analysed for the 1244 respondents whose ethnicity could be determined as Angloceltic, French, German, Italian or Ukrainian Canadian, A five group by five group intergroup attitude matrix was created, with each group acting both as attitude object and as holder of attitudes. Analysis indicated the existence of reciprocity or balance in the matrix: groups tended to reflect the attitude held toward them back onto the group holding the attitude. However this structural balance was moderated by the existence of shared attitudes about the position of a group in the national ethnic hierarchy. Further analysis indicated the existence of ethnocentrism in the matrix: attitudes toward ingroup and positive reference groups were more positive than toward out-groups. Perceived intergroup similarity and familiarity were positively correlated with each other and with intergroup acceptance. Results were discussed in relation to attitude balance theory and ethnocentrism theory, and in their implication for intergroup research in multicultural societies.  相似文献