英语九年级上册Topic 2 All these problems are very serious.示范课ppt课件

这是一份英语九年级上册Topic 2 All these problems are very serious.示范课ppt课件，共18页。PPT课件主要包含了Tip，Part 2，effects，problems，what to do，Homework，Thank you等内容，欢迎下载使用。
Welcme t my class!
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__________________
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we must d smething
prblems and effects
Chse the best title and match the right key wrds with each part.
Envirnmental prblems
We can divide a passage accrding t the key wrds.
Read fr main ideas
Hw ld is the earth?
4.6 billinyears ld
Hw lng have we lived n the earth?
35,000 years
Has ur planet changed a lt?
Read fr details
Read and find the best titles f paragraph 2-6:
Paragraph 2:_____________Paragraph 4:_____________Paragraph 6:_____________
Smetimes we can get the key wrds frm the first sentence.
Traffic pllutin Factry pllutin The zne hle Fewer trees Mre carbn dixide
Paragraph 3:_____________Paragraph 5:_____________
fewer trees
traffic pllutin
factry pllutin
becme deserts;disappear
the zne hle
mre carbn dixide
pllute the air;have health prblems
pllute land and water; be dead
factry pllutin
Grup wrk:Write a speech t call n(号召） peple t prtect ur envirnment.
Read fr writing
Yu can begin like this:Ladies and gentlemen, attentin please!I am frm the Green Organizatin. _________________________________________________________________________________S please jin us! Thanks fr yur attentin!
All ver the wrld, peple have cut dwn millins f trees. When it rains r when the wind blws, the earth is taken away. Frests have becme deserts, s many kinds f animals and plants are disappearing.
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Befre writing
We shuld plant mre trees……
As a student, what d yu think yu can d t make ur earth beautiful inur daily life?
1.Read 1a. 2.Try t write a passage abut sme envirnmental prblems and the effects.
CO2 carbn dixide increase a lt, frm a “blanket”, the heat frm the sun can’t escape