八英冀教版课件光盘教学课件unit 2 lesson 7.ppt

教学课件 英语 八年级下册 冀教版 Lesson 7 Planting Trees Unit 2 Plant a Plant! hole large cover fill storm dirty northern bottom n. 洞 adj. 大的；巨大的 v.覆盖 n.盖子 v.装满；充满 n.暴风雨 adj.不干净的；肮脏的 adj. 北方的；北部的 n. 底部；最下部 Words and expressions ? What are the basic steps for planting a tree? ? When is Tree Planting Day in China? Lead in It’s March 12. Li Ming and his classmates are on a hillside. They are planting trees as a school project. A worker is there helping them. Li Ming: Excuse me, sir. We are digging a hole. Is it big enough? Listen and read. Worker: Maybe you should make the hole a little bigger. It must be large enough to hold the roots of the seedling. Li Ming: I see. Thank you. Worker: Now, put the seedling inside, cover the roots and fill the hole with dirt.Then pack the dirt around the new tree with your feet. Wang Mei: OK. By the way, there is another group of people down the hill. Are they also coming to plant trees? Worker: Yes. Many people are worried because the environment is changing, and they want to do something to help. Li Ming: These changes are serious. When there is a dust storm in spring, it gets windy and dirty everywhere. Wang Mei: Ms. Liu told us the wind blows the dirt and the sand here from the north. Nothing can stop the wind because there are not many trees left. Worker: Exactly. A lot of rich lands in the northern area have turned into desert. Li Ming: I suppose tree planting is very important work. Wang Mei: For sure. I really like this project. It’s also a great way to learn about nature. Worker: Yes. It’s fun and important to plant plants. Oh, and please remember to put a little water in the bottom of the hole. Read and answer. What are Li Ming and his classmates doing on March 12? They are planting trees as a school project. 2. Why do many people come to plant trees? Because the environment i