3.3 Unit 3 The earth Grammar课件(共34张PPT)

(共34张PPT)
Unit 3 The Earth
Grammar
牛津深圳版　七年级上册
1
课堂导入
Look and say
There are many rivers, mountains and forests on the Earth.
There be……
Let’s talk about our Earth !
Let’s talk about our Earth !
provide with
Our Earth provides us food and water.
Lots of pollution, land pollution and air pollution.
There is lots of pollution on the Earth , such as land pollution and air pollution.
Let’s talk about our earth !
water pollution
There is lots of pollution on the Earth , such as water pollution.
Let’s talk about our earth !
air pollution
There is lots of pollution on the Earth , such as air pollution.
Let’s talk about our earth !
noise pollution
There is lots of pollution on the Earth , such as noise pollution.
Let’s talk about our earth !
important protect future
So it’s important to protect our Earth for the future.
Let’s talk about our earth !
food
water
rubbish
place
plant
air
land
mountain
pollution
forest
light
animal
field
What things are there on Earth
Our earth
sea
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
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.
2
课堂活动
A Countable and uncountable nouns
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.
可数与不可数名词
表示可以计算数目的人或物的名词称为可数名词。可数名词有单数和复数两种形态。单数可数名词前一般要用不定冠词a/an或定冠词the。可数名词可与具体数词连用，可用many, a few, few, some, a lot of, lots of, plenty of修饰。对可数名词的数量提问用how many。
1 名词复数的规则变化：
(1) 一般情况下在词尾加-s。如：
book → books, chair → chairs
(2)以s, x, sh, ch结尾的名词，在词尾加-es。如：
class → classes, box → boxes
(3) 以f或fe结尾的名词，先将f或fe变为v，再加-es。如：
shelf → shelves, wife → wives
(4) 以o结尾的名词，词尾加-es或-s。如：
tomato → tomatoes, photo → photos
(5) 以辅音字母加y结尾的名词，先将y改为i，再加-es。如：
baby → babies, factory → factories
(6) 以元音字母加y结尾的名词，词尾加-s。如：
day → days, boy → boys
(7) 以th结尾的名词，词尾加-s。如：
mouth → mouths, month → months
2 名词复数的不规则变化：
(1) 元音字母发生变化。如：
man → men, woman → women, foot → feet,
tooth → teeth, mouse → mice, goose → geese
(2) 单、复数形式相同。如：
deer, fish, sheep, Chinese, Japanese
(3) 词尾发生变化。如：child → children
(4) 有些名词只有复数形式。如： clothes, trousers, people
(5) man, woman修饰其他名词时，单复数要与被修饰的名
词保持一致。如： a man doctor → men doctors
表示不能计算数目的人或物的名词，称为不可数名词。它们前面不能用不定冠词a/an，没有复数形式。不可与具体数词连用。可用much, a little, little, some, a lot of, lots of, plenty of修饰。对不可数名词的数量提问用how much。
当表示不可数名词的确切数量时，通常在不可数名词前加上“数词+单位名词+of”表示。整个词组的单、复数由单位名词的单、复数决定。如：
a piece of paper 一张纸 two pieces of paper 两张纸
A cup of tea is on the table. 一杯茶在桌上。
Three cups of tea are on the table. 三杯茶在桌上。
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
A1
bottle/milk
box/egg
bowl/rice
1
2
3
In pairs, ask and answer questions about each photo.
Follow the example.
glass/water
bag/apple
cup/coffee
4
5
6
A2
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.
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.
B Using there is/are …
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
Work out the rule
We use ____________
with a singular noun or an
uncountable noun.
We use ____________ with a
plural noun.
there are
there is
Jane: _______ pollution in the sea. What can we do to
help protect the sea
Danny:________ many things we can do. We can have a
beach clean-up day. You see, ________ always many
bottles on the beaches. They pollute the sea.
There is
There are
there are
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.
Jane: That’s a good idea! What else can we do
Danny: We can ask people not to eat shark fin soup.
________ a seafood restaurant near your home
Jane: No,_________. _________ any other things we can
do to help
Is there
there isn’t
Are there
运用there is/are...句型
There is/are ...句型表示“某处有（或存在）某人或某物”，其结构为：There is/are + 名词+地点状语。
is与单数可数名词或不可数名词连用，are与复数可数名词连用。用is还是are由紧跟其后的名词决定。如：
There is a book on the desk. 书桌上有一本书。
（is与紧跟其后的a book保持一致）
There is some water in the bottle. 瓶子里有一些水。
（is与紧跟其后的some water保持一致）
There are three pictures on the wall. 墙上有三幅画。
（are与紧跟其后的three pictures保持一致）
There is a book and two pens on the desk.
书桌上有一本书和两支钢笔。（is与紧跟其后的a book保持一致）
There are three pictures and a photo on the wall. 墙上有三幅画
和一幅照片。（are与紧跟其后的three pictures保持一致）
There is/are ...句型的否定形式：There is not ... = There isn’t ... /
There are not ... = There aren’t ...。 如：
There is not / isn’t any water in the bottle. 瓶子里没水。
There are not / aren’t any books on the desk. 书桌上没书。
There is/are ...句型的一般疑问句形式及其答语：
Is there ... Yes, there is. / No, there isn’t.
Are there ... Yes, there are. / No, there aren’t. 如：
Is there any milk in the glass 杯子里有牛奶吗？
Yes, there is. 是的，有。/ No, there isn’t. 不，没有。
Are there fifty students in your class 你们班有50个学生吗？
Yes, there are. 是的，有。/ No, there aren’t. 不，没有。
There is/are ...句型的特殊疑问句形式及其答语：
疑问词+ is/are there + ... There is/are ...。 如：
— How many students are there in your class
你们班有多少学生？
— There are forty-eight students in our class.
我们班有48名学生。
注意：have/has也表示“有”，但主语往往是人，使用时不要与there is/are ...句型混淆。如：
There is a dog in our family. 我们家有一只狗。
We have a dog in our family. 我们家有一只狗。
3
课堂小结
1.We have learned how to use countable and uncountable nouns.
2.We have learned how to use the pattern there is /are.
一、写出下列名词的复数形式。
1 apple ________ 2 monkey ________
3 class __________ 4 desk _________
5 Foot _________ 6 box __________
7 piano __________ 8 family _________
9 child _________ 10 toy __________
11 Chinese __________ 12 boy _________
13 photo __________ 14 potato __________
15 city __________ 16 sheep _________
17 country __________ 18 tooth _________
19 month __________ 20 woman __________
apples
monkeys
classes
desks
feet
boxes
pianos
families
children
toys
Chinese
boys
photos
potatoes
cities
sheep
countries
teeth
months
women
4
课堂训练
二、用所给名词的适当形式填空。
1 We have twenty ________ (sheep) on the farm.
2 There is some ________ (food) in the bowl.
3 The baby has only two _______ (tooth) now.
4 There is a lot of _______ (water) in the bottle.
5 There are five ________ (people) in his family.
sheep
food
teeth
water
people
6 Let’s take some ________ (photo) of the beautiful place.
7 I have lots of ___________ (tomato) here.
8 The __________ (child) are playing games on the playground now.
9 Their ____________ (dictionary) look new.
10 They are ________ (woman) doctors.
photos
tomatoes
children
dictionaries
women
1. There ______ some good news in today’s newspaper.
A. were B. are C. is D. was
2. There ______ two pictures and a map of China on the wall.
A. have B. has C. are D. is
3. Look, there _____ a lot of fish in this river.
A. are B. is C. were D. was
三、单项选择
C
C
B
4. ______ there many sheep on the hill
A. Is B. Are C. Have D. Has
5. There ______ a book and two apples on the desk.
A. has B. have C. is D. are
6. There are two big ______ on the table. And there _______ much water in them.
A. bottles, are B. bottle, is C. bottles, is D. bottle, are
B
C
C
四、 翻译短句。
1 椅子下面有一只猫。
___________________________________
2 教室里没有20个学生。
___________________________________________
3 袋子里有一些面包。
____________________________________
4 书桌上有两本书吗？
_____________________________________
5 你们学校有多少个班？
____________________________________________
There is a cat under the chair.
There aren’t 20 students in the classroom.
There is some bread in the bag.
Are there two books on the desk
How many classes are there in your school
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