Species richness and altitudinal variation in the aquatic metazoan community in bamboo phytotelmata from north Sulawesi

We compared the aquatic metazoan community structure in bamboo stumps between a lowland (Kosinggolan; 200 m a.s.l.) and a highland site (Moat; 1030–1050 m a.s.l.) in North Sulawesi. The lowland bamboo stumps harbored 38 taxa including 2 predators, and the highland stumps harbored 35 taxa including 2 predators. In total 45 taxa were recorded, including 3 predators. Dominant detritivores were Tipulidae, Scirtidae, Chironomidae, Culicidae and Ceratopogonidae. The sole dominant predators wereToxorhynchites mosquito larvae, which occurred in 67% and 28% of stumps at the lowland and the highland sites, respectively. Although the mean biomass per stump did not differ significantly between the sites, the mean number of species per stump was significantly smaller at the lowland site. In addition, the variation in species composition among stumps was greater at the lowland site than at the highland site. Among dominant taxonomic groups, the number of non-predatory culicid species per stump was smaller at the lowland site where their predator,Toxorhynchites, was more abundant, although both sites had the same number of culicid species. In the presence ofToxorhynchites, the density and biomass of other culicids per stump were reduced significantly. The difference in predator density might affect differences in the local-scale community structure of individual bamboo stumps.     

"二程语录"在近代汉语词汇史研究上的价值

从新词、新义、词义扩大和双音复合虚词的大量产生四个方面论述了"二程语录"中的俗语词在近代汉语汇史研究上的重要价值.     

试论词汇语义对语法的决定作用

词汇与语法的关系问题，是伴随语言学历史但至今仍然没有很好解答的问题。长期以来，语法得到了高度重视，词汇的价值被忽视。事实证明，孤立地研究词汇和语法，不关注词汇与语法的关系，影响了我们对语言机制的深刻认识和准确把握。那种简单地认为语法是语言的主导和核心，词汇只是备用材料，语言的运用只是根据语法规则对词汇进行组配的看法，是本末倒置的。事实上，意义是语言的出发点和落脚点，词汇语义对语言要素的性质、功能及组配模式、表达形式等都具有决定性作用，汉语尤其如此。与此相关，应建立新的词义观。     

第二语言词汇习得刍议

从语言对比的角度来研究第二语言习得词汇量的问题,词汇习得策略的差异问题,并讨论了认知科学的最新发展对于词汇习得的重大促进意义,最后指出词汇习得研究中一些亟待深入研究的问题。     

学术论文中一种模糊策略—认知型动词的研究

在学术论文和两个新闻语料库的基础上，对学术论文中一种模糊策略—认知型动词进行研究。结果表明，这类动词广泛应用于学术论文中，且在学术话语和新闻话语中的分布存在显著差异。研究结果有助于学习者了解并掌握一定量的认知型动词，以增强其文章的说服力及可信度。     

论英语教学的词块法

研究词块教学法在提高词汇学习效率方面的优势。以115名一年级大学新生为实验对象,进行了为期8个星期的词块教学法和传统教学法的对比性教学实验。结果显示,词块教学法能更有效地扩大学生的词汇输入量并提高学生词汇产出质量。     

英语词汇重复模式与阅读理解

词汇重复模式是十分有效的阅读方法之一。文章从其定义出发 ,通过举例分析 ,指出此种方法对寻找文章主题句、中心句、概括文章主要内容等方面所起的重要作用     

词汇词与语法词——无变汉字遮蔽下汉语词类划分问题症结之所在

本文以词汇词、语法词为切入点,重新审视汉语词类划分这一老大难问题.词汇词、语法词的划分可以澄清人们在词的同一性、词的兼类、词的活用、名词化等问题上的模糊认识,从而化解争端,从根本上解决汉语词类划分问题.     

英语词汇习得中的“文化盲点”

本文以《大学英语》系列教材为主例 ,引用了大量的例证 ,从文化蕴涵的不等值性、文化蕴涵的非对应性、文化蕴涵的零对应性三方面对英语词汇习得中的“文化盲点”进行了深入的分析 ,目的是挖掘语言背后的文化内涵 ,指出语言与文化的水乳交融关系 ,并强调文化背景学习的重要性     

Lexical Motivation

Motivationreferstotheconnectionbetweentheword-symbolanditssense.Fromthepointofviewofmotivation.thcgrcatmajorityofEnglishwordsarenon-motivated.sincetheyareconventional-arbitrarysymbols.However.thereisasmallgroupofwordsthatcanbedescribcdasmotivated,thatis-adirectconncctionbctweenthesymbolanditssensecanbereadilyobserved.HereIwanttotalkaboutmotivationfromthreeaspects.I.MotivationcanariseinthreemajorwaysA.Phoneticmotivation:Wordsmotivatedphoneticallyarecalledechoicwordsoronomatopoeicwords.whoscp…