【课件】仁爱版九年级上册Unit 2 Topic 2 section C (共18张PPT)

problems and effects
Part 1
How long have we lived on the earth?
35,000 years
4.6 billion years old How old is the earth?
Has our planet changed a lot?
Yes
E. More carbon dioxide sentence.
pollute the air;
become deserts; have health
disappear
problems
pollute land and water; be dead
fewer trees traffic pollution factory pollution
effects
We can find the effects of other environmental problems in this way.
Thank you
/‘ka: bən dai’a: ksaid/ 二氧化碳
CO2 carbon dioxide increase a lot, form a “blanket”, the heat from the sun can’t escape
/ ‘blæŋkit/ 毛毯
Paragraph 2
problems
A__l_l_o__v_e__r__th__e__w__o__r_ld__,__p_e__o_p__le___h_a__v_e___c_u__t_d__o_w__n___m__i_ll_io__n__s__o_f t_r_e__e_s__._W___h__e_n__i_t__r_a_i_n_s__o__r__w__h_e__n__t_h__e__w__i_n_d__b__l_o_w__s__,_t_h__e__e_a__r_t_h_ i_s__t_a__k_e__n__a__w__a_y_._ F__o_re_s_t_s_h_a_v_e_b_e_c_o_m__e_d_e_s_e_r_ts_,_s_o__m_a_n_y_ _k_in_d_s_o_f_a_n_i_m_a_l_s_a_n_d__p_la_n_ts__a_re__d_is_a_p_p_e_a_r_in_g_.___
We can divide a passage according to the key words.
Environmental problems
Part1: ____①__________
Part 2:
Part 3:
______②__-_-_⑥________ ______⑦__________
we must do something the earth
Paragraph 6:_____________
A. Traffic pollution B. F/a’əcutzoəurny/ p臭o氧llution
C. D.
The ozone hole Fe/w‘kae:rbtərnedeasi’a: ksaid/
二氧化S碳ometimes we can get the key words from the first
effects
We should plant more trees……
what to doຫໍສະໝຸດ As a student, what do you think you can do to make our earth beautiful in our daily life?
1.Read 1a. 2.Try to write a passage about some environmental problems and the effects.
Unit 2 Saving the Earth Topic 2 All these problems are
very serious.
Section C
Miss Zheng
沙画视频
Choose the best title and match the right key words with each part.
i_s__t_a__k_e__n__a__w__a_y_._ F_o_r_e_s_ts__h_a_v_e_b_e_c_o_m__e_d_e_s_e_r_ts_,_s_o_m__a_n_y_
k_i_n_d_s_o_f_a_n_i_m_a_ls__a_n_d_p_l_a_n_ts__a_re__d_is_a_p_p_e_a_r_in_g_.___
the ozone hole
more carbon dioxide
…
…
traffic pollution
factory pollution
Group work:
Write a speech to call on(号召） people to protect our environment.
You can begin like this: Ladies and gentlemen, attention please! I am from the Green Organization. _________ ____________________________________ ____________________________________ So please join us! Thanks for your attention!
Read and find the best titles of paragraph 2-6:
Paragraph 2:_____________ Paragraph 3:_____________
Paragraph 4:_____________ Paragraph 5:_____________
problems
A__l_l_o__v_e__r__th__e__w__o__r_ld__,__p_e__o_p__le___h_a__v_e___c_u__t_d__o_w__n___m__i_ll_io__n__s__o_f
t_r_e__e_s__._W___h__e_n__i_t__r_a_i_n_s__o__r__w__h_e__n__t_h__e__w__i_n_d__b__l_o_w__s__,_t_h__e__e_a__r_t_h_