文档介绍：Unit 7 Environment More practice Step I Review sth about the pollution. 1) Where do different types of e from? 2) How do they affect out live? Let students discuss and answer them. Step II Listen to the tape, and let the ss write some key word. A sk some students to say sth about the passage. S tep III Open the book, and fill in the correct answer in the blank on page 108. S tep IV Check the answers. S tep V Learn the Part C. Step VI Ask the students to describe the pictures. T hen write the passage according to the key words about Jack ’s story and Jill ’s story on page 110. S tep VII Check the passage.