Unit 3 Computers Grammar课件(共21张PPT)

(共21张PPT)
Unit 3 Computers
Grammar
学习目标
1.学习形容词的比较级和最高级的意义、构成和用法。
2.学习在情景中正确使用形容词比较级和最高级。
Lead in
David
Lead in: David needs your help
Hi, everyone! I am David, a quiz-lover.
I want to be the winner of the class quiz and then I can take part in the school quiz.
I want to be the school champion.
Can you help me
How can we help David
We can help him prepare for the quiz!
The comparative of adjectives
（形容词的比较级 ）
class quiz
school quiz
2. Xinjiang is a bigger province than Tibet.
3. English is more popular than French.
4. The Pacific Ocean is larger than the Atlantic Ocean.
5.The whale is the heavier of the two animals.
1.The Yangtze River is longer than the Yellow River.
Task 1. Help David to prepare for the class quiz.
1.Which river is longer, the Yellow River or the Yangtze River
2.Which province is bigger, Xinjiang or Tibet(西藏)
3.Which language is more popular, English or French
4.Which ocean is larger, the Pacific Ocean or the Atlantic Ocean
5.Which animal is heavier, the whale or the elephant
I. Grammar discovery
When to use:
Markers（标志词):
How to form：
A or B, than,
the....of the two....
long--- longer
big--- bigger
popular--- more popular
large--- larger
heavy--- heavier
compare two people or things
the comparative of adjectives
big bigger
hot
thin
large larger
wide
nice
long longer
tall
fast
popular more popular
exciting
interesting
1. Most adjectives
2. Adjectives ending in e
+ er
+ r
3. Adjectives ending in a consonant + y
y+ier
4. Adjectives ending in a vowel+ a consonant
heavy heavier
silly
easy
+ double the last letter+er
5. Long adjectives
(多音节词以及部分双音节词)
more +adj.
I. Grammar discovery (the comparative of adjectives)
wider
nicer
sillier
easier
hotter
thinner
more exciting
more interesting
Work out the rules (forms)
taller
faster
David won the class quiz. Now, Tony, the reporter of school radio, is interviewing him.
class quiz
school quiz
[mɑ k]n. 分数
Tony: Congratulations! You won the quiz in our class this year!
David: Thank you.
Tony: You get much __________ mark than you did last year. Do you think the
questions this year are __________ than those of last year
David: No, I think they are a lot _______________. In fact, I spent more
time in library. I was even _____________ when reading books. I also
found a __________ way to get important information. That is, using
a puters are far __________ than human in many ways.
Tony: Wow, you learn a lot from it! How do you feel now
David: I feel excited. And my parents seem to be _________ than I am. But I
still need to work hard because I have a _________ goal--- the champion
of the school quiz.
Tony: Thank you for your sharing. I hope you can achieve your goal.
[ɡ l] n. 目标
Ⅱ. Grammar in use ( the comparative of adjectives)
Task 2. Complete the interview with the comparative of the
adjectives from the box.
easy
high
quick
smart
happy
patient
difficult
big
higher
easier
more difficult
more patient
quicker
smarter
happier
bigger
修饰比较级的程度副词：much, a lot, a bit, even, far
Tips: markers and key information
What did David do to win class quiz this year
spend more time
be more patient
find a quicker way
get help from us
The superlative of adjectives
（形容词的最高级 ）
class quiz
school quiz
2.Gold is the most valuable among them.
3. A whale is the heaviest.
4. A spaceship is the fastest.
5.Russia is the biggest country in the world
1.The Earth is the largest of the three planets.
I. Grammar discovery
1.Which planet is the largest, the Earth, the Mars, or the Moon
2.Which metal is the most valuable, iron, silver or gold
3.Which animal is the heaviest, a bear, a whale or a fox
4.Which vehicle is the fastest a spaceship, a plane, or a train
5.Which country is the biggest country in the world, China, Canada or Russia
the supelative of adjectives
When to use:
Markers（标志词):
How to form：
in/of/among + 范围
large--- the largest
valuable--- the most valuable
heavy--- the heaviest
fast---the fastest
big----the biggest
compare more than two people or things
Task 3. Help David to prepare for the school quiz.
big the biggest
hot
thin
large the largest
wide
nice
fast the fastest
tall
small
valuable the most valuable
exciting
1. Most adjectives
2. Adjectives ending in e
+ est
+ st
3. Adjectives ending in a consonant + y
y+iest
4. Adjectives ending in a vowel+a consonant
heavy the heaviest
silly
easy
+ double the last letter+est
5. Long adjectives
（多音节词以及部分双音节词）
the most+adj
the tallest
the smallest
the widest
the nicest
the silliest
the easiest
the hottest
the thinnest
the most exciting
I. Grammar discovery (forms of the superlative of adjectives)
Work out the rules (forms).
home, school or library
Which is the best place to prepare for
the school quiz,
David needs a good place to get himself ready for school quiz. Can you give him your advice
Ⅱ. Grammar in use (forms of the superlative of adjectives)
Task 4. Complete the the following advice with the superlatve of adjectives.
I know you are busy preparing for the school quiz,_________________ (challenging) event in our school. I think the best place to go is Guangzhou library.
First, among all the libraries in Guangzhou,it is _________(large) library.
Also, it probably has ____________________________ (big collection of books) so you can find almost all kinds of books there.
What's more, the atmosphere(n. 氛围) is great. It is one of _______________________ (modern building) in Guangzhou. The library inside is quiet and beautiful.
If you go there on weekends, don’t forget to get up early to get a seat. ___________________________________________(hot place)
the most modern buildings
the largest
the biggest collection of books
the most challenging
It is one of the hottest places for book lovers to go.
in/of/among + 范围
one of +adj.最高级+名词复数
Tips: markers and key information
David won the final school quiz! His parents were so happy that they decided to award(奖励) him with a 5-day Teenager Camp during National Holiday. For his camp activity, David needs to buy a suitcase and a camera.
a prize!
Consolidation
Task 5. Help David to choose what he needs in a shop and give reasons.
2,500
4kg
36cm*23cm*53cm
600
3.5kg
52cm*27cm*64cm
Shopping objects(物品) Requirements(要求) Total budget(预算)
a suitcase large enough to carry a lot of things
3,200
a camera light
David's shopping plan
Tips:
1. compare the products
2. think about David's requirements
and budget
You can use the following sentences:
For the suitcase/camera, you can choose________because____________________.
What's more,_____________________________.
larger/bigger
smaller
the cheapest
the most expensive
Help David to choose which one to buy in a shop and give reasons.
For the suitcase, you can choose ________ because______________________________________________________________________ What'smore,______________________________
it is much bigger than the red one, so it is large enough for you to carry a lot of things.
it is lighter and a lot cheaper, too.
the black one
For the camera, you can choose________ because _________________________________________Besides,________________________________________________________________So __________________________________________________________________________________
Camera B
it is the newest, lightest and smallest of all.
if you choose Camera B, you will spend less money than your budget.
it will be the best choice among the three
cameras.
One of our students tells David
1. compare the products
using comparavites
and superlatives
correctly with
markers and adverbials
2.consider David’s requirements and budget
For the suitcase, you can choose ________ because______________________________________________________________________ What's more,________________________________
For the camera, you can choose________ because ___________________________________________Besides,__________________________________ ___________________________________________ So ___________________________________
Can David have other choices
Please wrtie the reasons as your homework!
1. How to form the comparative and superlative of adjectives
1) Most adj: adj + er/est
2) Adj. ending in e: adj+ r/st
3) Adj. ending in a consonant +y: adj -y+ier/iest
4) Adj. ending vowel+consonant: double the letter+er/est
5) Long adj.（多音节词以及部分双音节词）: more/the most+adj
2. How to use the comparative and superlative of adjectives
1) 比较级标志词: than, or, of the two...
最高级标志词: in/of/among + 范围
2) 修饰比较级的程度副词: much, a lot/a bit, even, far
Summary
Write the reasons for your choices.
Homework
Thank you!