Unit7 what's the highest mountain in the world Section A Grammar Focus-4c课件(共25张PPT)2023-2024学年人教新目标

(共25张PPT)
人教新目标Go For It八年级英语下册
Unit7 what's the highest mountain in the world SectionA Grammar Focus-4c
Learning Objectives
use the comparatives and superlatives of adjectives and adverbs to compare two or more things;
use the sentence pattern of “as...as...” correctly;
use some expressions like much, a lot, a little to modify the comparatives.
By the end of the class, we will be able to:
知识梳理
New words
e.g. Ocean levels are rising.
海平面正在上升。
1.ocean n. 大海；海洋
2.the Pacific Ocean n. 太平洋
e.g. The river flows into the Pacific ocean.
这条河流入太平洋。
1.“the + 形容词/副词最高级”in/ of/ among...在...中最...
最高级的用法
三者或三者以上
2.“the +序数词+ 形容词最高级+名词”表示 第几...
3.“one of the+ 形容词最高级+名词复数”表示 最...之一
Presentation
Do you remember the names of these two units
What’s the best movie theater
I’m more outgoing than my sister.
We’ve learned the comparatives and superlatives of adjectives
and adverbs in these two units.
Review
Comparative adjectives
We use comparatives + ______ to compare ______ people or things. We usually add ______ to short adjectives and use ______ with long adjectives to form comparatives.
She is shorter than I am.
My book is more interesting than his.
two -er than more
than
two
-er
more
形容词和副词的比较级和最高级
1.大多数形容词和副词都有三个级。
1) 原级: 常用结构 as ... as... 像..….一样
e.g. Zhang Hong is as tall as Tom. 张红和汤姆一样高。
2) 比较级 (用于两者之间的比较)
常用结构：形容词比较级＋than ...
e.g. He is taller than me. 他比我高。
3) 最高级(用于三者或三者以上的比较)，
常用结构: the + 形容词的最高级＋of / in ...
e.g. He is the tallest of the three. 他是这三个人中最高的。
We form comparative and superlative adjectives like this:
Adjective Comparative Superlative
most short adjectives + er + est
e.g.
short adjectives ending in e + r + st
e.g.
short adjectives ending in a consonant + y - y + ier - y + iest
e.g.
long
small
longer
smaller
longest
smallest
fine
nice
finer
nicer
finest
nicest
easy
pretty
easier
prettier
easiest
prettiest
Fill in the blanks with the correct forms of the words in the box.
big much popular long old high
1. The Amazon River is one of the _______ rivers in the world. It’s a little _______ than the Yangtze River.
2. Qomolangma is 8,844.43 meters _____. It’s one of the most ________ places for serious mountain climbers.
3. No ocean in the world is as _____ as the Pacific Ocean.
4. Although Japan is _______ than Canada, it is _______ smaller.
longest
longer
high
popular
4a
big
older
much
Presentation
Superlative adjectives
We use the + __________ to compare three or more people or things. We usually add ______ to short adjectives and use ______ with long adjectives to form superlatives.
He is the tallest boy in our class.
This is the most expensive computer in the shop.
most superlatives -est
superlatives
-est
most
形容词和副词的比较级和最高级
规则 原级 比较级 最高级
（1）一般单音节词在词尾加-er和-est long fast longer faster longest
fastest
（2）以“e”结尾的单音节词在词尾加-r和-st nice late nicer later nicest
latest
规则 原级 比较级 最高级
（3）重读闭音节，词尾只有一个辅音字母，须双写最后一个辅音字母，再加-er或-est big hot sad glad bigger hotter sadder gladder biggest
hottest
saddest
gladdest
（4）辅音字母+y结尾，变y为i，再加-er和-est heavy angry funny heavier angrier funnier heaviest
angriest
funniest
不规则变化
原级 比较级 最高级
good/well好的 better更好的 best最好的
bad差的，ill坏的 worse更差的；更坏的 worst最差的；
最坏的
many/much多的 more更多的 most最多的
little少的 less更少的 least最少的
short adjectives ending in a vowel + a consonant double the consonant + er double the consonant + est
e.g.
long adjectives more + most +
e.g.
irregular adjectives replace the word replace the word
e.g.
big
slim
bigger
slimmer
biggest
slimmest
beautiful
important
more beautiful
more important
most beautiful
most important
good
bad
better
worse
best
worst
Comparative and superlative adverbs
We can form the comparative and superlative adverbs in the same way we form comparative and superlative adjectives.
Millie came third in the race. She ran fast.
Sandy came second in the race. She ran faster than Millie.
Amy came first in the race. She ran the fastest.
Do you know these man-made wonders
1. The Forbidden City
2. The Potala Palace
3. The Oriental Pearl
TV Tower
4. The Canton Tower
We form comparative and superlative adverbs like this:
Adjective Comparative Superlative
most short adverbs + er + est
e.g.
long adverbs more + most +
e.g.
irregular adverbs replace the word replace the word
e.g.
hard
high
harder
higher
hardest
highest
quickly
carefully
more quickly
more carefully
most quickly
most carefully
well badly
far
better
worse
further / farther
best
worst
furthest / farthest
Presentation
Write two comparisons about two topics. Write true facts.
4b
Two cities: ________________ and _______________
________________________________________________
________________________________________________
________________________________________________
Shanghai Sydney
Shanghai is not as big as Sydney.
Sydney is much bigger than Shanghai.
Sydney is almost 2 times as big as Shanghai.
Area:12368 sq km
Area:6340 sq km
Instant Training
一、单项填空。
1. —Fishing is one of　　　　activities among many people. —Yes.But now it’s not allowed to fish in the Yangtze River as well as other rivers.
A.popular B.more popular C.most popular D.the most popular
2. —Lucy,have you changed a mobile phone with 5G —Yes,I think the mobile phone with 5G can send videos much_____ than the one with 4G. A.fast B.fastest C.the fastest D.faster
D
D
3. Does the dish taste as　　　　as it looks
A.well B.best C.good D.better
4. People in the rural(农村的) areas live a　　　　life with the care of the government.
A.happier and happier B.poorer and poorer C.more and more happily D.more and more poorly
C
A
5. I think there’s no need to buy such an expensive coat for a kid.I’d like a　　　　one.
A.cheap B.cheaper C.cheapest D.higher6. —What do you think of Wilson’s speaking —No one does　　　　in our school. A.good B.well C.better D.best
B
C
4c
Write five questions using comparisons. Then ask your partner your questions.
1. _______________________________________
2. _______________________________________
3. _______________________________________
4. _______________________________________
5. _________________________________
What is the highest building in our city
What is the biggest supermarket in our city
Who is the tallest student in our class
Who is the shortest student in our class
Who sings the best in our class
Presentation
4．This detective story is _______ than the one I read last night.
A．attractive B．more attractive
C．most attractive D．the most attractive
5．—What’s the second ________ river in China
—The Yellow River.
A．longer B．the longer C．longest D．the longest
6．Katie is ________ of the three girls in her family.
A．young B．younger C．the younger D．the youngest
一、单项选择
Practice
B
C
D
1. China is _______ (large) than any other country in Asia.
2. Our city is becoming more and more _________ (beautiful).
3. The _____ (much) we do for the old people, the _______ (happy) we’ll be.
4. My brother is the ______ (tall) of the two boys in the picture.
5. Her bedroom is twice _________ (big) than mine.
6. Mrs. Smith looks much __________ (young) with her new hairstyle.
7. China is one of __________________(ancient) countries in the world.
8. The Yellow River is the second ________ (long) river in China.
二、用括号中所给单词的适当形式填空
Practice
taller
larger
beautiful
more
happier
longest
bigger
younger
the most ancient
Homework
1.Memorize the important sentences.
2. Preview the new words of Section B.