-
U2 Water
The first
period
Teaching
aims
：
Introduce
the
topic
water.
Ask
students
to
work
in
pairs
for
a
few
minutes, and to write down anything
they know about water. Ask 3
students
to tell their answers and write them down on the
black
board. Then discuss their ideas
briefly and do the exercises.
Teaching
Important Points :
Try to know
something about water
Teaching
Procedures:
1: A Free Talk
What do you know about water
*
People
can
live
without
food
for
more
than
a
month,
but
they
can’t
live
without
water
for
more
than
week.
Losing
more
than
20%
of
the
normal
water
content
of
our
bodies
will
result
in
a
painful
death.
*About 65-70% of our bodies are water,
so it is important for us
to
drink
a
lot
of
water.
Each
day,
a
normal
person
will
drink
about
2.4
liters
of
water
or
other
drinks.
In
America,
the
average
person
will
use
260
liters
of
water
a
day
and
on
average,
each
person
will
drink
60, 600 liters of water in his/her life.
*Some people believe that our emotions
and mental stability are
affected
when
there
is
a
full
moon
because
the
gravitational
pull
of the moon affects the water in our
bodies in the same way as it
affects
the ocean tides. Legends say that werewolves
appear when
there is a full moon.
*You need more water during
and after exercise because you lose
water by sweating and you need to
replace the water that is lost.
*
Water
freezes
at
0℃
(32℉).
When
it
freezes,
it
changes
into
ice.
Water boils at
100℃(212℉) when it changes its form into a gas,
becoming steam.
2: Look and
think
* Choose the write answer
1 You could live without water for a
few ______.
a days b weeks
c hours
2 Your body needs about ______
liters of water daily.
a two
b four c eight
3 When
you exercise, the amount of water you need _____.
a increases b decreases c
remains the same
4 When you freeze
water, it becomes a _______.
a liquid
b solid c gas
5 About
_______ of the earth is covered by water.
a one third b one half
c two thirds
6 The scientific symbol
for water is ________.
a H2O
b HO2 c H2O2
* Use the
picture to put these sentences in the correct
order.
( ) It flows to the sea.
( ) It runs into streams and
rivers.
( ) It rises from the sea
to the sky.
( ) Water falls from
the clouds as rain.
( ) It falls as
rain again.
Homework:
Preview the text: Water talk
The second period
Teaching aims:
1 Try to
understand the whole lesson and read it fluently.
The tone
and pronunciation should be
basically right.
2 Learn the new
words and phrases.
Teaching aids:
Multimedia equipment
Teaching Important Points :
How to understand the test
completely .
Teaching Difficult Points
:
Teaching Procedures:
1: A Free talk
(Ask
two
Ss
to
talk
about
some
measures
we
use
to
save
water
and
say
the
following.) T: Very good . Thank you for your
performance.
We have learnt that water
is very important and we don’t have enough
water in the world. If we don’t have
water in our da
ily life, the
situation will be terrible and we all
will die. Some people in other
places
are suffering from lack of water, such as African
people. We
should treat every drop of
water seriously and should no waster even
a drop of water.
Show
the
text
on
the
screen
then
give
brief
introduction
to
the
students
and
then let Ss read the new text after the recording
.
2: learn some new words.
1 brush n.
刷子，毛刷
v.
刷，擦，拂拭
We brush our
teeth with a toothbrush
everyday.
2 pour v.
灌注，倾泻，涌入，流，倾盆大雨
pour oil on the fire
火上加油
Tears poured
from her eyes.
People poured into he
hall.
Please pour me a cup of tea.
At 5 o’ clock workers poured out of the
factories.
It was pouring.
3 sink n.
水槽
I left the soap by the side of the
sink.
v.
使…下沉
The ship
is sinking.
4 vanish v.
消失
Forests are
vanishing from our land.
5 drain
n.
排水管
Your
kitchen drain has become blocked by tea leaves.
v.
排去
The water
drained away slowly.
6 freeze v.
（使）结冰，凝固
The
terrible news froze my blood.
freezing adj.
极冷的
frozen adj.
冻结的
frozen food
7 impatient
adj.
不耐烦的，没耐心的
opp.
patient
有耐心的
I’m getting
impatient because I’ve waited for an
hour.
patience n.
耐心，容忍
I have no
patience with him again.
8 obey
v.
服从，顺从，听话
They refused to obey (the order).
9
faint adj.
微弱的
Did you hear the faint moan just
now?
10 float adj.
漂浮，飘浮
Wood
floats on water.
11 comfortably
adv.
舒适的，舒服的
comfortable adj.
安乐的，舒适的
comfort n.
慰藉，安乐
I feel
very comfortable in this chair.
The
lovely baby was a comfort to her.
12
view n.
景色，风景
The
house has a view over the sea.
n.
看法，观点
What
is your view on school punishments?
13
speed v.
加速
speed up
n.
速度
at a speed
of 80 miles an hour
14 nod
v.
点头
She
nodded to show that she agreed with me.
n.
点头
He greeted
me with a nod.
15 relax
v.
松弛，放松，休息
After a day of hard work, I relaxed at home.
16 puzzled adj.
困惑的，疑惑的
puzzle
v.
（使）迷惑，
（使）为难，迷惑不解
n.
难题，迷
a crossword puzzle
I was puzzled how to do it.
Their strange relationship puzzles
me.
17 treatment n.
治疗，处理
His
treatment of the animal was cruel.
hard treatment:
虐待
be
under treatment
：在治疗中
treat v.
对待，处理
18 thorough
adj.
完全的，彻底的
We’d better h
ave a thorough
cleaning to welcome the Chinese New
Year.
thoroughly
adv.
完全地，彻底地
We
have
cleaned
the
house
thoroughly
to
welcome
the
Chinese
New
Year.
19 chemical n.
化学制品
They
added a few chemicals to clean up the water.
chemical adj.
化学的
chemical
change
chemistry
n.
化学
She is out chemistry
teacher.
20 sewage n.
污水
We can’t let out sewage because it will
pollute the water.
21 plant n.
工厂，仪器
When
the plant closed down, many workers lost their
jobs.
n.
植物
v.
种植
22 pump v.
抽水
Can you
help to pump the water from the well?
The heart pumps blood.
n.
抽水机，打气筒
23
precious adj.
珍贵的，宝贵的
Nothing is more precious than friendship.
The beautiful vase is very precious.
24 weird adj.
怪异的，奇怪的，不可思议的
Tom had some weird ideas.
3: Practice
Play the tape for students to listen
and repeat, then answer some
questions.
4: Read and think
Complete
the following blanks.
1 PETER Why was
the voice impatient?
JUDY
___________ Daisy was ______________
______________.
2 PETER Why did Daisy
nod her head?
JUDY ____________
she knew ____ _____ _____ _____ was.
3
PETER Why did the water go to a treatment works?
JUDY ____________ it _____ _____
_____ _____ journey.
4 PETER Why did
the water say, ‘I’ll be back in the sea
again.’?
JUDY
____________
it
_____
_____
the
sea
_____
_____
_____
place.
5 PETER Why did the
water say it was like liquid gold?
JUDY
___________ it believed that _____ _____ _____.
6 PETER Why did Benny think his
sister was weird?
JUDY _________
she
said,
‘_____
_____
_____
_____
_____
_____.’
4: Explain the language Points :
1 look around:
向四周看
I looked
around and found there was no one in the street at
all.
2 It is /was time to do sth.
是该…的时候了
,
到…时候了
It is time to have lunch.
该吃饭了。
It was
time for him to stop his revenge.
It
is time to have a relax if there is no work to do.
3 finish doing sth.
finish
with sth.
完成某事
Could I borrow the book when you have
finished reading it?
I have finished
with all my homework.
The
work
has
not
been
finished
yet.
Another
3
days
are
needed
to
finish
it.
After finishing playing football, you
can have a bath.
4 It is (not) + adj. +
for sb. to do sth.
某人做某事（不）容易
It
is exciting for us to go to the movies.
It is not easy for him to win the
first prize.
It is impossible for
people to live on the sun.
5 get
cleaned up = be cleaned up