(共29张PPT)
Unit 3 The Earth
Listening & Grammar
Listening
Sea facts
When you listen for facts, you need to catch the important words.
Names, times and numbers are usually important. They can help you find the correct answers to the questions.
Listen to a quiz about the sea. Then circle the correct pictures.
1 a b
3 a b
2 a b
one quarter three quarters
whale tiger
5 kilometres 10 kilometres
Three quarters of the Earth is covered by water.
Post-listening
Describe the pictures according to the key words.
three quarters
the Earth
water
whale live sea
the deepest part
sea
more than
10 kilometres
The whale lives in the sea.
The deepest part of the sea is more than 10 kilometres deep.
1 Only ______ of the Earth is land.
a 3/4 b 1/4
2 Most of the water on Earth is in ______.
a streams and rivers b the seas
3 Whales ______ fish.
a are b are not
Try the quiz about the sea.
4 Sharks are ______.
a small b dangerous
5 ______ catch fish for people to eat.
a Fishermen b Farmers
6 Sea water usually tastes ______.
a sweet b salty
7 People ______ drink sea water.
a can b cannot
Grammar
A Countable and uncountable nouns
What things are there on Earth
plant
field
mountain
river
forest
pollution
water
land
air
food
rubbish
sea
animal
light
place
home
people
plants
places
fields
mountains
rivers
forests
pollution
water
land
air
food
rubbish
sea
animals
plant
place
field
mountain
river
forest
pollution
water
land
air
food
rubbish
sea
animal
How can we divide these things
Countable nouns
Uncountable nouns
light
Countable and uncountable nouns
In English, we can count some things, e.g. rivers and mountains.
We cannot count other things, e.g. water and air.
Countable nouns Uncountable nouns
one animal, two animals some rubbish
I have a world map at home. There is an article about the Earth. All plants need light and water.
This plant is beautiful. These animals are dangerous. Air has no smell.
Water is important.
Work out the rule
(Countable/Uncountable) nouns can have plurals.
We can use a or an before (countable/uncountable) nouns.
Uncountable nouns only take (singular/plural) verbs.
A1 Read the sentences below and decide whether the nouns in italics are countable or uncountable. Write the words in the correct columns.
1 There is grass in a forest.
2 Do not throw rubbish into the river.
3 The air is fresh in the mountains.
4 The flowers are beautiful. Let me take a photo.
5 We should drink water every day.
Here is a glass for you.
countable uncountable
forest
river
mountains
flowers
photo
glass
grass
rubbish
air
water
bottle/milk
box/egg
bowl/rice
glass/water
bag/apple
cup/coffee
S1: What’s this
S2: It’s a bottle.
S1: What’s inside it
S2: Some milk.
S1: What are these
S2: They’re boxes.
S1: What’s inside them
S2: Some eggs.
A2 In pairs, ask and answer questions about each photo. Follow the example.
a piece of
a loaf of
a slice of
We use them with (countable/uncountable) nouns.
You are in a fast food restaurant now. You are going to order something. Use I want … , I would like … to make orders.
I want a bowl of salad.
I’d like a hamburger.
Countable nouns
1. +s book→books
2. 以s, x, ch, sh结尾,+es class→classes
3. 辅+y, 改y为i, +es city→cities, play→plays
4. o+es或o+s(有生命+es；无生命+s) potato→potatoes, tomato→tomatoes,
photo→photos
5. f, fe , 改v+es life→lives, leaf→leaves
6. 不规则 man→men tooth—teeth
7. 单复数相同 fish, deer, sheep, Chinese, Japanese
将下列的名词变成复数形式。
1. book ___________________ 2. duck ___________________
3. house ___________________ 4. orange ___________________
5. class ___________________ 6. box ___________________
7.watch ___________________ 8.child ___________________
9. city ___________________ 10. family ___________________
11. tomato __________________ 12. photo ___________________
13. tooth ___________________ 14. man ___________________
15. knife ___________________ 16. sheep ___________________
Books ducks
houses oranges
classes boxes
watches children
cities families
tomatoes photos
teeth men
knives sheep
There Be 句型
There is a beautiful world under the water.
There is a lot of pollution on Earth.
Is there any water in the glass
肯定回答: Yes, there is.
否定回答: No, there isn’t.
There are different plants and animals on Earth.
Are there five apples in the bag
肯定回答: Yes, there are.
否定回答: No, there aren’t.
There be 句型表示人或物的存在
★ 常见的There be 形式如下：
肯定式：There is / are …
否定式：There is / are not …
疑问式：Is / Are there …
★ There is + 单数可数名词或不可数名词
There are + 复数可数名词
There be 句型中，be动词的单复数遵循“就近原则”
例如：There is a glass of water and three apples on the table.
There are three apples and a glass of water on the table.
1.There _______ some milk, some eggs and a few apples on the table.
is B. are C. has D. have
2. 花园里有一些花和两棵树。
________________________________________
3. 桌子上有两杯牛奶和一个鸡蛋。
________________________________________
A
There are some flowers and two trees in the garden.
There are two glasses of milk and an egg.
We often use there is … or there are … to say that something exists somewhere.
There is
a beautiful world under the water.
a lot of pollution on Earth.
Is there any water in the glass
Yes, there is.
No, there isn’t.
There are different plants and animals on Earth.
Are there five apples in the bag
Yes, there are.
No, there aren’t.
Note the difference below:
There is a glass of water and three apples on the table.
There are three apples and a glass of water on the table.
Things to remember
there is = there’s
there is not = there isn’t
there are not = there aren’t
We use ____________ with a singular noun or an uncountable noun.
We use ____________ with a plural noun.
Work out the rule
there is
there are
Jane:(1)_______ pollution in the sea. What can we do to help protect the sea
Danny: (2)________ many things we can do. We can have a beach clean-up
day. You see, (3)_________ always many bottles on the beaches.
They pollute the sea.
Jane is asking Danny about what they can do to help protect the plete their conversation with there is (not), is there, there are or are there.
There is
There are
There are
Jane:That’s a good idea! What else can we do
Danny:We can ask people not to eat shark fin soup. (4)_______ a
seafood restaurant near your home
Jane:No, (5)__________. (6)__________ any other things we
can do to help
Is there
there isn’t
Are there
感 谢 观 看
