there has been a gradual shift of focus from the study of rule systems, which have increasingly been regarded as impoverished, … to the study of systems of principles, which appear to occupy a much more central position in determining the character and variety of possible human languages. there is a set of absolute universals, notions and principles existing in ug which do not vary from one ...

Phenology is one of the important issues in ecology, which studies various stages of plant life and its relation with climatic and ecological conditions. Useful information for the production cycle is obtained by evaluating the various stages of native species development. In this research, the phenology of 17 species of Fritillaria, Bellevallia and Muscari in the National Botanical Garden of I...

iv abstract this study examined the linguistic behaviors of two iranian efl teachers each of them teaching learners of two similar proficiency levels, a beginner level and an intermediate level, to investigate the relationship between the learners proficiency levels and the amounts and purposes for l1 use by the two teachers. the study was carried out to investigate whether there were differe...