（新）牛津译林版高中英语必修第一册课件：Unit 4 Section Ⅰ Reading （Welcome to the unit & Reading）.pdf（新）牛津译林版高中英语必修第一册课件：Unit 4 Section Ⅱ Language Points （Welcome to the unit & Reading）.pdf（新）牛津译林版高中英语必修第一册课件：Unit 4 Section Ⅲ Grammar and usage.pdf（新）牛津译林版高中英语必修第一册课件：Unit 4 Section Ⅳ Integrated skillsExtended reading & Project.pdf