上海版牛津英语8Bunit1Trees课件-知识点全.ppt

If I plant this seed in the ground will it become a pear tree,Hi?;Reading; How much do you know about trees;1. How long do they live on the earth?; means the process of making things dirty and unhealthy. ;3. Which of the following come from trees?;Which is the Shenzhen city flower?;B Look and think; He is a fire fighter Don’t fight each other, boys.;2.Why are you so interested in trees?;surprised (adj) 感到惊讶的 surprising(adj) 令人惊讶的 surprise (n) 惊讶 frightened-frightening-frighten excited-exciting-excite;3.Do you enjoy breathing fresh air?;4.Trees are natural air conditioners.;5.For example, whe insects ..., it can warn its neighours.;6.The other trees then produce a chemical to make their leaves taste...;7.Trees are communicating with one another.;8.Are tree in danger?;9.We cut down and burn a lot of trees.;;C1 Find the meanings of the following words according to the passage.;4. in danger A. not dangerous B. safe C. not safe 5. burn A.save B. damage something by fire C. make warm 6. destroying A. protecting B. helping C. damaging badly 7. against A.for B. saying no to C. saying yes to ; A project interviewing breathing natural warn a chemical cut down ;D. Find the facts. Four mistakes in Judys notes;E Read and think;3 RITA: One tree has the power of 15 air conditioners. Is that right? MAY:___. One tree has the power of ____________. 4 RITA: Do scientists know a lot about trees? MAY:___. They are___________________________. 5 RITA: Can trees communicate with one another? MAY:___. For example, when insects_____________. ;6 RITA: And can they protect themselves from insects? MAY:___. They can produce a__________________. 7 RITA: Can trees help one another? MAY:___. For example, they can_____________________________________. 8 RITA: Every year, there are fewer and fewer trees in the world. Is that true? MAY:____. People