人教英语选修7Unit3 Under the sea Reading and comprehending （共24张PPT）

(共24张PPT)
Reading and comprehending
Please enjoy some beautiful pictures
and vidoe about sea animals
If you have the chance to go snorkelling ,
what creatures can you see under the
sea?
sea creatures
whale
animonfish
sea-star
parrotfish
gaint clam
seal
reef shark
sea-slug
dolphin
coral
turtle
eel
A New Dimension of Life
1 In the diary, the author mainly wants
to tell us that _______.
A. what he saw in the sea
B. how the fish eat in the sea
C. the vivid colors in the sea
D. all the plants in the sea are poisonous
Listen to the text and choose
the best answer.
2 When the author saw two _____, he felt
scared to death.
A. anemonefish B. parrotfish
C. sea-slugs D. sharks
A
D

colors and shapes
dangers
reflecting
the reef’s edge
a final thought
some sea creatures

Para. 1
Para. 2
Para.3
Para.4
Para. 5
Para.6
Choose the topics for each paragraph
1 How many creatures are mentioned in the passage?

2 What are they?
Ten
coral, anemonefish, parrotfish, sea-slug, sea-star, turtle, eel, giant clam, reef shark
Careful Reading
Para.1 reflecting
1 I was sitting in the _____ ____ ____ with a cold in my hand and ________ ___ the day
2 It’s a day of ______ magic! I _____ ________on the reef _______ this morning and …
pure
went
offshore
warm night air
reflecting on
snorkelling
Para.2 colours and shapes
3 The first thing I ______ _______ __ was all the ______ colours _________
became aware of
vivid
surrounding
me.
4 And all kinds of ______ ____ and _______ were swimming ___ and ______ the coral.
small neat
elegant
in around
Para.3 some sea creatures
5 I especially loved the little orange and white fish that hid in the _____ ____ ___ _______.
6 The yellow and
waving
long thin seaweed
green ________ was hanging _______ ______ and _______ tiny plants ….
parrotfish
down
sucking
upside
Para.4 dangers
7 An ____ has strong _____ teeth,
with only its head showing from a hole, _________ __
______ fish…
eel
sharp
watching for
tasty
8 Then there were two ______ reef sharks, and I was ______ __ death.
grey
scared to
Para.5 the reef’s edge
9 The water was quite _______, but where the reef ended, there was a ______ drop to the sandy ocean floor,
shallow
steep
which marked a _________.
boundary
Para.6 a final thought
10 What a ______ and _______ world it was down there!
11 And what a ____ _____ I was in this enormous world!
wonderful
limitless
tiny spot
Translation
1 反省，思考
2 去潜泳
3 意识到，知道
4 上下翻转
5 吓死了
go snorkelling
reflect on
upside down
be/become aware of
feel/be scared to death
During the __________ trip, the writer first became
______ of the ______colours and the fantastic corals.
He saw anemonefish ______ in the corals, a parrotfish
________upside down, a sea-slug _______by a sea-star,
an eel _______ its head from a hole, a giant clam
________for something and 2 reef sharks ___________
from behind some corals. He was ________to death.
It is a wonderful and__________ world under the sea.
snorkeling
aware
vivid
hiding
hanging
sliding
showing
waiting
appearing
scared
limitless
Fill in the blanks according to the text.
ocean pollution
Recently, scientists found that since the industrial society appeared, about half of polluted gases _______ resulted from human activities _______________(absorb) by the ocean. The researchers warned that these gases into the sea, _______(great) raised the acidity（酸性） of sea water. Between 1751 and 1994 surface ocean pH is estimated(估计) to have _________ (decrease) from about 8.179 to 8.104. This situation will do harm ______ the sea life.
which
were absorbed
greatly
decreased
to
Researchers spent 10 years _____ the global ocean survey. They found _____ human ________ (activity) produced polluted gases, such as from industrial production, about 48% of _____ are absorbed by sea water. And these polluted water flew into the _______(world) major ocean.
on
that
activities
which
world’s
Recently, scientists found that since the industrial society appeared, about half of polluted gases which resulted in human activities are absorbed by the ocean. The researchers warned that these gases out the sea, greatly raised the acidity（酸性） of sea water. Between 1751 and 1994 surface ocean pH is estimated(估计) to have decrease from about 8.179 to 8.104. This situation will do harm the sea life.
from
were
into
decreased
to
Researchers spent 10 years in the global ocean survey. They found that human activity produced polluted gases, such as from industrial production, about 48% of them are absorbed by sea water. And these polluting water flew into the world major ocean.
on
activities
which
polluted
world’s
Homework
1 Finish the exercise2 on page
24-25
2 Write a passage about how to
protect the ocean