上海版牛津英语8Bunit1Trees精品课件-知识点全

1. How long do they live on the earth?
mice
mimi pine trees dolphins
a. 75 years b.14 years c.25 years d.1,200 years e.2 years
Pollution means the process of making things dirty and unhealthy.
3.Do you enjoy breathing fresh air? enjoy doing sth 喜欢做某事 他喜欢看故事书。 He enjoys reading story-books.
breath n 呼吸 breathe v 呼吸
All the animals need to b_r_e_a_t_h_e to live. Hold your _b_r_ea_t_h__.
make sth /sb do sth
7.Trees are communicating with one another.
communicate with 与...交流
In the past, people would often communicate with each other using letters. one another 彼此，互相
trees
rubber
beans cotton
tea oil
Which is the Shenzhen city flower?
azaleas
B Look an百度文库 think
Look at the title, the introduction and the pictures. Which are T or F?
5.For example, whe insects ..., it can warn its neighours.
warn v 警告
I tried to warn him to keep away from that dog, but he would not listen.
warn sb to do sth
9.We cut down and burn a lot of trees.
cut down 砍倒
cut the tree down=cut down the tree cut it down (V) cut down it (X) Don’t cut down the tree
be interested in =take an interest in
类似的词有：
surprised (adj) 感到惊讶的 surprising(adj) 令人惊讶的 surprise (n) 惊讶 frightened-frightening-frighten excited-exciting-excite
air pollution noise pollution water pollution Which type of pollution do trees help fight?
all of the above
3. Which of the following come from trees?
apples
another.
1.Pollution Fighters pollution (n.) pullute (v.)
Pollutions are becoming very serous The dirty rubbish polluted the air.
fighter (n.)
fight(v)
He is a fire fighter Don’t fight each other, boys.
6.The other trees then produce a chemical to make their leaves taste... produce v.产生 product n.产品
The factory p_r_o_d_u_ce_s_many cars every year. This boy used to like French_p_ro_d_u_c_t_s .
2.Why are you so interested in trees?
interested (adj) interesting(adj) interest (n)
感兴趣的 有趣的 兴趣
Mary is _in_t_e_r_e_st_e_d_ in _in_t_e_re_s_t_in_g_ coins. She also takes an _in_t_e_re_s_t__ in stamps.
If I plant this seed in the ground will it become a pear tree,Hi?
Yes
a seed
a pear
That's strange.It's an apple seed.
Pollution fighters
How much do you know about trees
8.Are tree in danger? be in danger 处于危险之中 danger (n ) dangerous （adj)
在这场洪水灾难的人们处于危险之中
The people in the flood is in danger. 这场大火十分危险
The big fire is very dangerous.
F 1. The “pollution fighters” are probably scientists.
F 2. Few useful things come from trees. F 3. Trees give out harmful gases. T 4. Trees can pass information to one
4.Trees are natural air conditioners.
natural adj 自然的，天生的 nature n. 大自然，天然
Some desert countries have few natural resources. Nature is at its best in spring.