人教版九年级全册Unit 6 When was it invented？SectionA 1a-1d 教案

人教版九年级全册 Unit 6 When was it invented？ Section A 3a-3c 教案

人教版九年级全册Unit 6 When was it invented？SectionA 3a-3c 教案

人教版九年级全册英语 Unit 6 When was it invented？SectionA 3a-3c 教案

人教版九年级全册英语Unit 6 When was it invented？SectionA 3a-3c 教案

人教版九年级全册Unit 6When was it invented？SectionA Grammar focus 4a-4c 教案

人教版九年级全册英语Unit 6 When was it invented？Section A 1a-1d 教案（表格式）