8BU1pollution-fighters(知识点)PPT课件

But many people haven't realized the importance of trees. They
cut down as many trees as possible.In order to get more land to
build houses or factories, people are_d_e_s_t_ro_y_i_n_g_ many
• It's d__a_n_g_e_ro__u_s__ to swim in the sea. • The man is in _d__a_n_g_e_r_ now, he is calling
for help.
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Trees communicate with one another.
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making
Trees play an important role (起着重要的作用) in our daily
life.They are useful in three important ways.The most important
way is that they provide us many things such as food, _w_o_o_d_, rubber and other products.They can take in harmful gases and r_e_le_a_s_eoxygen into the air, which makes the air __p_u_r_e and clean.Without trees, many animals _a_s_w__e_ll_a_s_ human beings can not live on the earth.
trees.Trees are _i_n_d_a_n_g_e_r_.We must do something to protect
them and plant more trees. Only in this way can we make our
earth a better place to l.ive on.
sending sending
phone calls messages e-mails
• People communicate with one another by internet.
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warn
warning
It warns us not to ... swim/ smoke/ get into the room/
Trees take in harmful gases and release oxygen.
2. 她和她妈妈都喜欢唱歌.(as well as)
She as well as her mother likes singing.
3. 我认为我们要保护树木.(suppose)
I suppose we should protect trees.
• breathe cool/ fresh/polluted air • breathe in, / breathe out • take a breath / hold a breath
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Question3:
Are trees in danger?
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Trees are in great danger.
The second important way is that trees give us shade. On a hot summer day, people really want to have a rest under the shade
The third important way is that they help to__fi_g_h_t_ against water pollution. They can clean the water.
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release---- let out
Look, the factory is releasing black smoke into the air.
The prisoners will be released soon.
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I suppose you also enjoy breathing pure ,cool air.
walk on the grass
It warns u. s of electricity. 17
Quiz
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• 1. The factory often _____ black smoke
____ the air.
A. releases; into
B takes; from
C. helps; with
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Homework:
1. Copy the phrases 1-30
2. Do the exercises on the book
3. Think about how to protect our earth
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Good of trees
• 1. Make the streets moreb_e_a_u_t_iful and less _n_o_is_y.
• 2. Provide us with_w_o_o_d, ,_ru__b_b_er , __p_a_p_er ,__f_ru_it ....
• 3. _T_a_k_e_ harmful gases _fr_o_m_ the air and r_e_le_a_s_eoxygen back i_n_t_o_the air.
games/playing games
music/listening to music drawing pictures
basketball/playing basketball
badminton/ playing badminton
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Question2: But what good are trees?
Judy a_s_ _w_e_ll_ _a_s her
classmates likes to breathe clean air.
make... + adj.
• The news makes me _s_a_d__/ _u_p_s.et • The news will make you more
excited,less worried.
I'm interested in books. I'm interested in reading books. I have great interest in books/reading books.
What are you interested in?
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I'm interested in books. I'm interested in reading books. I have great interest in books/reading books.
Language points
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1
Question1:
Why are you so interested in trees, Doctor Ray?
•Doctor Ray is very interested in trees.
•Doctor Ray shows/has great interest in trees.
• We _c_u_t d_o_w__nand burn millions every year.But we replace hardly any of them.
We are__d_e_s_tr_o_y_i_n_gour best fighters
against poll.ution.
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danger dangerous
• 3. My mother warned me ____ to the beach to swim.
A. didn't go
B. to not go
C. to go not
D. not to go
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• 4. Are you interested ____?
A. on swim
B. about swimming
a. know b. think c. ask
• I suppose it is going to be rainy tomorrow.
I suppose it is going to be... I don't suppose it is going to be...
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breathe(v.) [bri:ð] breath(n.) [breθ]
D. protects; from
• 2. Although my parents are working in
HongKong, we can ____ each other by email.
A. communicate with B. keep in touch
C. communicate to D. have a talk
4. 如果你有危险,请告诉我.(in danger)
If you are in danger, please tell me.
5. 我们要经常和父母交流沟通.(communicate)
We should often c.ommunicate with our parents.21
pure, release, wood, in danger, destroying, as well as, dangerous, fight
C. in swim
D. in swimming
• 5. So many people come to my birthday, it made me really_____.
A. to be happy
B. happily
C. happy
D. to be happily
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1. 树木吸收有害气体,释放氧气.(take, release)
• 4. Cool the air _a_s_ _w_e_l_l _a_s__ clean it.
I can dance, I can sing too.
I can dance _a_s _w_e_ll _a_s sing.
Judy likes to breathe clean air.
Her classmates like to breath clean air too.