Unit 4 Period 1 课件.ppt

1、Unit 4,Oxford English,Module 2 Mans best friends,Save the trees,Period 1,Reading,In this unit, we are going to talk about another of mans best friends on Earth, trees.,1,Background knowledge,How much do you know about trees? Try the short quiz below.,fruit,branch,leaf,root,Brainstorming,What do tree

2、s do for us ?,Trees are major fighters against air pollution.,Trees take in harmful gases from the air and produce oxygen for us to breathe.,Look at the pictures on page 45. Then answer the question below.,Trees take in harmful gases from the air and make oxygen for us to breathe.,2,Before you read,

3、Look at the title of the interview on page 45. Then answer the question below.,Many of the things in our daily lives come from trees. For example, paper pencils, and chairs.,3,Reading,Trees in our daily lives Rebecca wants to know more about trees and how they help us. She is interviewing Dr Jones a

4、bout trees.,Read the first part of the conversation and answer the following question.,1. They keep the air cool and clean.,keep sth. + adj. 使某物保持怎样的状态,Our teacher tried many ways to keep us active.,我们老师用很多方法使我们活跃。,2. They take in harmful gases from the air,harmful 是个派生词，即词根+后缀（suffix），意为“ 有害的”， 其名词

5、形式是“harm” be harmful to 对有害,Smoking is harmful to your health. 吸烟有害身体健康。,take in 意为“ 吸收”。与take in有关的短语： 拿出来 拿走 随身携带某物,take out,take away,take sth. with sb.,3. They are major fighters against air pollution.,major 意为“主要的”。 fight against 意为“与作斗争”。 fight for 意为“为而战”。,We should try our best to _ noise po

6、llution. People used to _ freedom and equal rights.,fight against,fight for,Why are trees major fighters against air pollution?,Comprehension,They keep the air cool and clean. They take in harmful gases from the air. They produce oxygen for us to breathe.,Read the second part of the conversation and

7、 answer the following question.,4. trees also make our lives more convenient.,make sb. + adj. 意思是“使某人感到”。,The good news made my mum happy. 这个好消息使妈妈感到很开心。,5. A lot of the furniture is made of wood.,furniture 意为“家具”，是不可数名词。 be made of 表示“用制作（看得出原材料）” be made from 表示“用制作（看不出原材料）”,The desk is made _ woo

8、d. Paper is made _ wood.,of,from,6. We should stop doing this if we dont want a world without trees.,stop doing sth. 意为“停止做某事”。 stop to do sth. 意为“停下来去做某事”。,You look tired. Why not stop _ (have) a rest? I should stop _(have) a rest now. I have lots of homework to do.,to have,having,What can we get f

9、rom trees?,Comprehension,Fruit Oil Tea and furniture,Read the third part of the conversation and answer the following question.,How many trees do people cut down every year?,Comprehension,People cut down millions of trees every year.,Trees in our daily lives,4,Comprehension,air pollution,cool and clean,harmful gases,more c