九年级牛津版 9A Unit 1 star signs Study skills 【最新】九年级英语上册 Unit1 Study skills课件 牛津译林版 课 件 Slang phrases ( 俚语） are very informal phrases commonly used in speech, Especially between people from the same particular （独特的） social group, for example, teenagers, criminals and soldiers, or between people who work together. They are not considered suitable for formal contexts （文章） . 【最新】九年级英语上册 Unit1 Study skills课件 牛津译林版 课 件 Abbreviations ( 缩写词） use only the first letters of a name or phrase, or leave out lett
