英语词汇教学时英语教学的重要组成部分,词汇教学的成败直接影响英语课堂教学质量的高低,也影响学生英语学习兴趣的高低。英国应用语言学家威尔金斯(D.Wilkins,1976)说:“without grammar very little can be conveyed,without vocabulary nothing can be conveyed.”(没有语法,人们可以表达的事物寥寥无几,而没有词
This paper highlights past efforts in developing erosion process concepts that lead to the development of the current process-based erosion prediction model, i.