Unit 1 Getting along with others Period 1 Welcome to the unit Period 2 Reading Period 3 Language points Period 4 Word power Period 5 Grammar and usage(1) Period 6 Grammar and usage(2) Period 7 Task Period 8 Project Unit 2 The environment Period 1 Welcome to the unit Period 2 Reading Period 3 Language points Period 4 Word power Period 5 Grammar and usage(1) Period 6 Grammar and usage(2) Period 7 Task Period 8 Project Unit3 Science and nature Period 1 Welcome to the unit Period 2 Reading Period 3 Language points Period 4 Word power Period 5 Grammar and usage(1) Period 6 Grammar and usage(2) Period 7 Task Period 8 Project 附:檢測(cè)卷及答案(活頁(yè)) Unit 1 Self-assessment Unit 2 Self-assessment Unit 3 Self-assessment