(共21张PPT)
课时作业(二十四) Section Ⅳ Grammar & Writing(共27张PPT)
课时作业(二十二) Section Ⅱ Reading and Thinking(共22张PPT)
课时作业(二十一) Section Ⅰ Listening and Speaking
& Listening and Talking(共29张PPT)
课时作业(二十三) Section Ⅲ Discovering Useful Structures & Reading for Writing
