内容正文:
教学课件
Unit 4 The Wonders of Nature SectionA Grammar Focus
1
学习目标
1. 熟练掌握形容词、副词原级、比较级、最高级的核心用法
2. 牢记比较级/最高级的规则变化与不规则变化,避免出错
3. 学会英语中三位数及以上大数的读写规则,精准表达数据
4. 能完成填空、选择、句型转换、语篇填空等多种题型练习
形容词和副词的比较等级
Let’s learn
英语中的形容词和副词常用三种形式来表达事物的等级差别,
即原级、比较级和最高级。
原级:没有比较含义;
比较级:两者间比较,表示“较……”或“更……”;
最高级:三者及三者以上比较,表示“最……”,形容词最
高级前一般要加定冠词 the,副词最高级前的 the 可以省略。
小红书:Christina在努力|原创课件 更多教学资源可以关注分享~
3
知识点1:比较级/最高级核心概念
1. 核心用途:描述人或事物在程度、数量上的差异
2. 三级别区分:原级(自身特征)、比较级(两者对比)
最高级(三者及以上对比)
3. 本单元贴合自然奇观主题,侧重结合场景运用
(如描述山峰高度、沙漠面积、瀑布壮观程度)
原级用法详解
含义:描述人或事物本身的特征,无对比意味
常用句式(2种核心):
① as + 原级 + as (和……一样,表同等程度)
② not as/so + 原级 + as (不如……,表程度差异)
注意:修饰动词用副词原级,修饰名词用形容词原级
1.形容词和副词的比较级、最高级的构成(规则变化)
单音节词和部分双音节词 多音节词和部分双音节词
一般在词尾加-er或-est 以e结尾的词加-r或-st 以“辅音字母+ y”结尾的双音节词,把y变为i再加-er或-est 以一个辅音字母结尾的重读闭音节词,双写这个辅音字母后再加-er或-est 在单词前加 more 构成比较级,加 most 构成最高级
fast→faster→fastest nice→nicer→nicest easy→easier→
easiest big→bigger→
biggest beautiful→more beautiful→most beautiful
Let’s learn
形容词和副词的比较等级
小红书:Christina在努力|原创课件 更多教学资源可以关注分享~
6
1.形容词和副词的比较级、最高级的构成(不规则变形)
原级 比较级 最高级
good/well
many/much
bad/badly/ill
little
old
far
better
best
more
most
worse
worst
less
least
older/elder
oldest/eldest
farther/further
farthest/furthest
Let’s learn
形容词和副词的比较等级
小红书:Christina在努力|原创课件 更多教学资源可以关注分享~
7
1.big __________ _________ 2. high __________ __________
3. low __________ __________ 4. deep __________ __________
5. easy __________ __________ 6. far __________ __________
7. happy __________ _______ 8. early __________ __________
9. great __________ __________ 10. close __________ __________
11. amazing_______________ ________________
12. interesting______________ ________________
13. well __________ __________ 14. little __________ __________
写出下列单词的比较级和最高级
bigger
biggest
higher
highest
lower
lowest
deeper
deepest
easier
easiest
farther
farthest
happier
happiest
earlier
earliest
greater
greatest
closer
closest
more amazing
most amazing
more interesting
most interesting
better
best
less
least
Let’s practice
小红书:Christina在努力|原创课件 更多教学资源可以关注分享~
原级例句精讲(结合自然奇观)
1. The Amazon River is as long as some big rivers.(原级肯定)
(亚马逊河和一些大河一样长。)
2. This lake is not as deep as the Dead Sea.(原级否定)
(这个湖不如死海深。)
3. 错误:He runs as fastly as his brother.(fastly为错词)
4. 正确:He runs as fast as his brother.(fast副词原级)
比较级用法详解
含义:用于两者之间的对比,突出“更……”
常用句式(2种重点):
① A + be/动词 + 比较级 + than + B (A比B更……)
② the + 比较级 + of the two (两者中更……的一个)
注意:than后接的对象要与主句主语对应一致
形容词和副词的最高级
Let’s learn
表示三者或三者以上(人或事物)的比较,其中有一个在某一方面超过其他几个,后面可用带有in、of、among的短语等来说明比较的范围。形容词最高级的前面一般要加定冠词the,副词最高级前的the可以省去。
①The blue whale is the largest and heaviest animal in the world.
②In my country, July is the hottest month of the year.
③The cheetah runs (the) fastest among all land animals.
某一范围内的比较用in
同一类事物范围内的比较用of
副词最高级前的the可以省去哦
小红书:Christina在努力|原创课件 更多教学资源可以关注分享~
比较级例句精讲(结合自然奇观)
1. The Gobi Desert is bigger than the Taklamakan Desert.(A比B)
(戈壁沙漠比塔克拉玛干沙漠大。)
2. This waterfall is more beautiful than that one.(多音节词)
(这个瀑布比那个更美丽。)
3. He is the taller of the two guides.(两者中更……)
(他是两个导游中更高的那个。)
长江是中国最长的河流。
The Yangtze River is ________ _________ river in China.
2.莉莉在我们班跳舞最好。
Lily dances __________ _________ in our class.
3.这本书是图书馆里最有趣的。
This book is ____ _____ __________ book in the library.
4.那只鸟在树林里飞得最高。
That bird flies ________ _________ in the woods.
the longest
the best
the most interesting
the highest
Who is the tallest, Tom , Mike , or Jack?
which/who+ be + the + 形容词最高级,A, B or C?
which/who+ v +( the )+ 副词最高级,A, B or C?
Which season do you like (the) best, spring, summer , or autumn?
谁最高,汤姆,迈克还是杰克?
你最喜欢哪一个季节,春季、夏季还是秋季?
苹果、香蕉和橙子,哪一种水果最健康?
Which fruit is _____________, an apple, a banana or an orange?
the healthiest
形容词与副词的比较级和最高级
核心用法:
比较级:用于两者之间的比较,表示“一方比另一方更……”。常与“than”连用。
The Yangtze River is longer than the Yellow River in China.
The Mariana Trench is deeper than any other part of the ocean.
最高级:用于三者及以上的比较,表示“最……的”(常与 “the” 连用,后接 “in/of”短语限定范围。
Mount Qomolangma is the highest mountain in the world.
The Sahara Desert is the largest desert in the world.
15
形容词与副词的比较级和最高级的变化规则
变化规则 例词
一般在词尾直接加-er和-est tall—taller—tallest;
light—lighter—lightest
以字母-e结尾的直接加-r或-st nice—nicer—nicest;
fine—finer—finest
以辅音字母加y 结尾的词,变y为i加-er或-est heavy—heavier—heaviest;
busy—busier—busiest
16
A: Who is the … student/teacher in our class?
Who...the ... in our class?
Which...?
B: I think / As for me / In my opinion,… I know.
funny boring loud bad serious smart friendly tall quiet good
outgoing busy creative thin
popular fast hard-working...
真心话大冒险
“one of the + 形容词最高级 + 可数名词复数 + 范围”
“最…… 的…… 之一”,强调在一个范围内,
one of + the + 形容词最高级 + 可数名词复数做主语,谓语(单数形式)“…… 是…… 中最…… 的…… 之一”
the + 序数词(second/third…) + 最高级 + 名词 +
表示范围的短语
“……是第(二/三)……最……”
黄河是中国的第二大长河。
The Yellow River is the second longest river in China.
海南是中国的第二大岛。
Hainan is the second largest island in China.
Write some questions to compare places. Then ask a partner your questions.
4d
What is the highest...?
Which park is bigger, … or ...?
It’s Mount Qomolangma.
What’s the highest mountain in the world?
How high is it?
It’s ...
形容词与副词的比较级和最高级的变化规则
变化规则 例词
以重读闭音节结尾且末尾只有一个辅音字母的形容词,双写最后一个辅音字母再加-er或-est。 thin—thinner—thinnest; hot—hotter—hottest
多音节词或部分双音节词的比较级和最高级在其前面加more或most。 beautiful—more beautiful
—most beautiful
21
原级 比较级 最高级 单元应用场景
good/well
better
best The Great Barrier Reef is one of the best places to study marine life.
bad/badly
worse
worst The weather on Mount Qomolangma can get worse quickly.
many/much
more
most The Amazon Rainforest has the most variety of plants and animals.
little
less
least The Dead Sea has less oxygen than other seas, so few fish live there.
形容词与副词的比较级和最高级的不规则变化
原级 比较级 最高级
good/well better best
ill/bad/badly worse worst
many/much more most
little less least
old older/elder oldest/eldest
far farther/further farthest/furthest
22
If ________ people drive cars, there will be ________ air pollution.
A.more; less B.much; less C.fewer; less D.less; fewer
2
Of all the students in his class, Wang Lin writes ________.
A.most carefully B.most careful
C.more carefully D.more careful
3
The new sleeper trains between Hong Kong and Beijing may not be ________, but they’re the most comfortable.
A.slower B.the fastest C.the slowest D.faster
1
Multiple choice.
用单词的适当形式填空。
1. They found that the monkey was ____________ (clever) of all the animals.
2. —Cindy, are you feeling better now? —No, Mum. I feel even _______ (bad).
3. Last but not ______ (little), do try to get some exercise,
4. May I have _______ (much) beef because it tastes so nice?
5. The lake near my home is the _____ (good) place to go fishing.
6. You look much ________ (slim) in this black pair of trousers.
7. Zhang Shun was the ______ (old) runner to finish the 2022 Beijing Marathon.
worse
more
slimmer
the cleverest
least
best
oldest
猴子是最聪明的动物之一。
Monkeys are one of _____________________animals.
2.北京是中国最古老的城市之一。
Beijing is one of _____________________ cities in China.
3.熊猫是最受人们喜爱的动物之一。
Pandas are one of __________________________ loved by people.
4.珠穆朗玛峰是世界上最高的山峰之一。
Mount Qomolangma is ________________ mountains in the world.
the cleverest animals
the oldest cities
the most popular animals
one of the highest
中国最美味的食物之一是饺子。
One of _________________ foods in China_____ dumplings.
2.世界上最高的建筑之一是哈利法塔。
One of ___________________ in the world _____ the Burj Khalifa.
3. One of _______________ (beautiful) cities in Europe ____ Paris.
4. One of _____________ (long) rivers in the world _____ the Nile.
the most delicious is
the tallest buildings is
the most beautiful is
the longest is
1. Memorize the new words and phrases.
2. Practice the conversations with your partner using the
sentence patterns we have learned .
3. Finish the exercises.
Homework
Thanks!
$