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(共17张PPT)
Unit 4
Amazing Plants and Animals
Section A What can plants and animals do
Grammar Focus (3a-3c)
Learning Objectives
In this lesson, you will:
1. master the format and usage of superlatives.
2. talk about more plants and animals using superlatives.
The blue whale is the largest and heaviest animal in the world.
The biggest land animal in the world is the African elephant.
The cheetah runs the fastest among all land animals.
I think the most useful plant in the world is bamboo.
It is perhaps the most interesting plant in the world.
3a
Read the sentences and notice the words in bold. What are the ways to form a superlative adjective or adverb
最高级的构成方式：在词尾+est 或在词前加most
形容词、副词最高级的构成：（1）规则变化
（1）一般比较级直接在词尾+er 最高级+est
tall-taller-tallest short-shorter-shortest
fast-faster-fastest high-higher-highest
（2）以不发音的e结尾的词，比较级在词尾+er 最高级在词尾+st
nice-nicer-nicest late-later-latest wide-wider-widest large-larger-largest
（3）以辅音字母+y结尾的双音节词，比较级改y为i+er，最高级改y为i 再+est
heavy-heavier-heaviest busy-busier-busiest easy-easier-easiest early-earlier-earliest
（4）重读闭音节，且末尾只有一个辅音字母的词，比较级双写该辅音字母+er ，最高级双写该辅音字母，再+est
big-bigger-biggest hot-hotter-hottest
thin-thinner-thinnest fat-fatter-fattest
（5）多音节词和部分双音节词，比较级在原级前+more，最高级+most
slowly- more slowly- most slowly
beautiful-more beautiful-most beautiful
（2）不规则变化
good（形容词）/well（副词）—better—best
bad（形容词）/badly（副词）—worse—worst
many（形容词）/much（形容词/副词）—more—most
little（形容词/副词）—less—least
far（形容词 /副词）—farther—farthest (具体距离的远近)
far—further—furthest (抽象意义的深远)
最高级的常用句型
（1）“主语+be+the+形容词最高级+in / of 短语” 或“主语+实义动词+(the)+
副词最高级+in / of 短语”。意为“.......是.......中最......的。”
eg.
1.
2.
Tom is the tallest in his class / of all students.
汤姆是他班上/所有学生中最高的。
我是我班/所有学生中跳得最远的。
I jump (the) farthest in my class / of all the students.
最高级的常用句型
（2）“主语+be+on of the+形容词最高级+可数名词复数+in / of 短语。
意为“.......是.......中最......的......之一。”
eg.
1.
Beijing is one of the largest cities in China.
北京是中国最大的城市之一。
最高级的常用句型
（3）“疑问词+助动词+主语+动词原形+（the）+副词最高级, A, B or C
eg.
1.
Which season do you like (the) best, spring, summer or autumn
你最喜欢哪个季节，春季、夏季还是秋季？
3b
Complete the sentences with the superlative forms of the words in brackets.
1. Among all animals, I love pandas the best. I think they are ____________ (cute) animals in the world.
2. Which do you think is ______________ (beautiful), the rose, the peony, or the lotus flower
the cutest
the most beautiful
3. Look at that butterfly! It has
_______________(colourful) wings.
4.Which animal jumps ___________(high), the lion, the monkey, or the tree frog
the most colourful
the highest
5. The elephant birds were ______________(large) and _____________ (heavy) birds ever on earth. Some could stand up to three metres tall and weigh up to 860 kg.
the largest
heaviest
Complete the passage with the superlative forms of the words in the box.
3c
ancient beautiful common good popular
The ginkgo tree is one of _______________living trees on earth. Ginkgo trees first appeared over 200 million years ago. Chinese people love the ginkgo, as it is a symbol of hope and long life. Many Chinese believe that the old ginkgo tree in the Zhongnan Mountains in Shaanxi Province is_______________. Thousands of tourists come to
the most ancient
the most beautiful
see it each year, especially in mid-October, as it is _____________ time to see it. The ginkgo tree is one of _______________ trees in streets, parks, and gardens across China. When autumn comes, one of _______________ activities is to take a walk under ginkgo trees. People believe the bright yellow leaves can bring joy to their heart.
the best
the most common
the most popular

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