A Comparison between CAH and EA Theory
Both CAH and EA belong to the role of the native language in early ages. Although EA is the development of CAH, they are different from each other.
Contrastive Analysis is a way of comparing languages in order to determine potential errors for the ultimate purpo of isolating what needs to be learned and what does not need to be learned in a L2 learning situation. To Error analysis, it is a type of linguistic analysis that focus on the errors learners make.
The theoretical foundations for what became known as the Contrastive Analysis Hypothesis were formulated in Lado's Linguistics Across Cultures in 1957. Error analysis in SLA was established in the 1960s by Stephen Pit Corder and colleagues.
Contrastive Analysis was ud extensively in the field of Second Language Acquisition (SLA) in the 1960s and early 1970s to predict areas that will be either easy or difficult for learners in compiling pedagogical materials. It is bad on a theory of language that claims
that language is habit and that language learning involves the establishment of a new t of habits. It is said that one can account for errors by considering differences between the L1 and the L2.That is to say, the greater the differences, the more errors will occur, so what one has to do in learning L2 is learn the differences. There are two positions that developed with regard to CAH framework. They were variously known as the strong form vs. the weak form, the predictive form vs. the explanatory form, and the a priori form vs. the a posteriori form.
Error analysis was an alternative to contrastive analysis. In cond language acquisition, Error Analysis studies the types and caus of language errors. an approach influenced by behaviorism through which applied linguists sought to u the formal distinctions between the learners' first and cond languages to predict errors. Errors are regarded as evidence of the state of a learner’s knowledge of the L2. There are a number of steps taken in conducting an error analysis. They are Collect data, Identify errors, Classify errors, Quantify errors, Analyze sources, and Remediate. EA provides a broader range of possible explanations than CA to account for errors. One needs to consider non-errors as 藏头诗我喜欢你
well as errors to get the entire picture of a learner’s linguistic behavior.
Both of the two theories have their advantages and disadvantages.
Historically, Lado’s hypothesis inspired a generation of L2 rearchers to conduct linguistic field work, that is, to check hypothetical contrastive analysis statements against the actual speech of language learners. But, many errors predicted by Contrastive Analysis were inexplicably not obrved in learners' language. Contrastive Analysis could not predict all learning difficulties, but was certainly uful in the retrospective explanation of errors. It is an oversimplification to think that comparing two languages is a straightforward comparison of structures.
属兔的贵人As to EA, it is important in the recognition that learners were more than passive hiccupers of NL forms and functions. Error analysis showed that contrastive analysis was unable to predict a great majority of errors, although its more valuable aspects have been incorporated into the study of language transfer. But, it falls short in the analysis of L2 data in that it only es a partial picture of what a learner produces of the L2. So it’s impo
ssible to appreciate the complexity of the learning situation by studying one limited part of it.
小贴士：夏季养生常识
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立夏已过，炎热的夏季来了。夏季是充满生气的季节，但同时也要特别注意养生保健。我们该如何保持在炎热的夏季保持身体健康，从而享受这个夏季呢？让我来告诉大家几个夏季养生保健小常识吧。
1.夏季养生保健之多喝温水
每天要喝七八杯白开水，身体要随时保持水分和补充水分，水在人体内起着至关重要的作明，维持着人体正常的生理功能。水是人体不可缺少的重要组成部分，器官、肌肉、血液、头发、骨骼、牙齿都含有水分，夏季失水会比较多，若不及时补水就会严重影响健康，易使皮肤干燥，皱纹增多，加速人体衰老。另外矿泉水、冷茶，牛奶，苹果汁是理想的解渴饮料。
2.夏季养生保健之补钾
暑天出汗多，随汗液流失的钾离子也比较多，由此造成的低血钾现象，会引起人体倦怠无力、头昏头痛、食欲不振等症候。热天防止缺钾最有效的方法是多吃含钾食物，新鲜蔬菜和水果中含有较多的钾，可多吃些草莓、杏子、荔枝、桃子、李子等；蔬菜中有大葱、芹菜、毛豆等也富含钾。茶叶中亦含有较多的钾，热天多饮茶，既可消暑，又能补钾，可谓一举两得。
3.夏季养生保健之尽量穿浅色衣服i53470
深色衣服会吸收阳光，使人体温升高燥热；同时蚊子有趋暗的习性，深色容易吸引蚊子，特别是黑色。
老钟叔4.夏季养生保健之福自“苦”中来
温暖暖 苦味食品中所含有的生物碱具有消暑清热、促进血液循环、舒张血管等药理作用。热天适当吃些苦味食品，不仅能清心除烦、醒脑提神，且可增进食欲、健脾利胃。苦瓜：取其未熟嫩果作蔬菜，成熟果瓤可生食，既可凉拌又能肉炒、烧鱼，清嫩爽口，别具风味。苦瓜具有增食欲、助消化、除热邪、解疲乏、清心明目等作用。此外，苦菜、茶叶、咖啡等苦味食品亦可酌情选用。应注意的是，食用苦味食品不宜过量，否则可能引起恶心、呕吐等症状。蔚然成风
5.夏季养生保健之皮肤瘙痒注意事项
豚鼠能活多久 夏季出游，因日晒而导致皮肤瘙痒、干疼时，可涂少量肤轻松等软膏，不要用热水烫洗，也不宜用碱性大的肥皂清洗，以免刺激皮肤，加重症状。
