资源简介

(共22张PPT)
Section A (3a~3c)
Unit 4
Amazing Plants and Animals
学习目标
1
2
3
能在语境练习中，根据构成规则正确使用最高级描述事物，自然表达。
能识别并理解形容词和副词最高级的基本形式，明确其表达“三者及以上中最……”的语法意义，并通过观察例词归纳出最高级的构成规则。
借助描述“最……”的内容（如动植物、自然事物 ），增进对自然的认知，培养热爱生活、关注动植物的情怀。
The blue whale is the largest animal in the world.
It’s also the heaviest animal on earth.
Quick quiz
1. What’s the largest animal in the world
2. Which animal runs the fastest
Quick quiz
The cheetah runs the fastest.
3. What is the oldest plant in the world
The moss is the oldest plant.
4. Which kind of tree is the tallest in the world
5. Which mountain is the highest in the world
Quick quiz
Qomolangma (Mount Everest) is the highest mountain in the world.
The redwood tree is the tallest.
3a
Read the sentences and notice the words in bold.
The blue whale is the largest and the 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.
What are the ways to form a superlative adjective or adverb
以 “辅音 + y” 结尾，变 y 为 i 加 -est
形容词和副词的最高级的构成 （规则变化） 类别 构成方法
多音节词和部分双音节词 interesting - most interesting
useful - most useful
单音节词和部分双音节词 fast - fastest
large - largest
big - biggest
heavy - heaviest
词前加 most
Discuss in groups and summarize the rules.
一般情况下，词尾加 -est
以不发音的 e 结尾，词尾加 -st
重读闭音节结尾，双写尾字母加 -est
原级 比较级 最高级
good / well better
bad / badly worse
many / much more
little less
far farther / further
形容词和副词的最高级的构成 （不规则变化）
best
worst
most
least
farthest / furthest
不规则变化需特殊记忆。
Write the superlative forms of the following words.
late
strange
hot
comfortable
lazy
_____________
_____________
_____________
_____________
_____________
cute
shy
honest
happy
good
_____________
_____________
_____________
_____________
_____________
latest
strangest
hottest
most comfortable
laziest
cutest
shyest
most honest
happiest
best
Exercises
自主阅读题目，分析每个句子语境，思考括号内单
词的最高级形式。完成后，同桌间互相检查、讨论。
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
rose
peony
lotus
Look at the butterfly! It has _________________ (colourful) wings.
Which animal jumps ___________ (high), the lion, the monkey, or the tree frog
the most colourful
the highest
butterfly
翅膀
tree frog
Among them, the tree frog usually jumps the highest. Tree frogs have special hind legs—they’re long and strong, made for pared to their body size, they can jump really far and high.
Lions are big hunters. Their bodies are better for running.
Monkeys are better at climbing trees and swinging around in them.
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
the heaviest
elephant bird
有……重；称重量
千克
What are the superlative forms of the words in the box
ancient beautiful common good popular
ancient
beautiful
common
good
popular
_____________
_____________
_____________
_____________
_____________
most ancient
most beautiful
most common / commonest
best
most 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 ________________. This tree is over 1,400 years old. Thousands of tourists come to 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 to their heart.
the most ancient
the most beautiful
the commonest
the best
the most popular
Which kind of animal do you think is the cutest
Which kind of flower do you think is the most beautiful
What fruit do you think is the sweetest
Which subject do you think is the most interesting
Which season do you think is the most comfortable
Which sport do you think is the most exciting
Think and share
课堂总结
通过本课的学习，我能够:
1. 正确朗读并运用本课单词和短语:
land, African, rose, peony, lotus, butterfly, wing, frog, weigh, kg (= kilogram), ginkgo, province, take a walk
2. 掌握形容词和副词最高级的构成规则:
一般情况下，词尾加 -est
以不发音的 e 结尾，词尾加 -st
重读闭音节结尾，双写尾字母加 -est
以 “辅音 + y” 结尾，变 y 为 i 加 -est
3. 借助描述“最……”的内容（如动植物、自然事物 ），增进对自然的认知，培养热爱生活、关注动植物的情怀。
当堂检测
一、根据句子语境，用括号中形容词的最高级形式填空。
the tallest
Tom is ___________ (tall) student in his class.
Mount Everest is ___________ (high) mountain in the world.
She is ___________ (kind) person I know.
December is ___________ (cold) month of the year here.
Math is ______________ (difficult) subject for me.
Spring is ___________ (good) season of the year, I think.
the highest
the kindest
the coldest
the most difficult
the best
当堂检测
二、找出句子中的错误并改正。
I think this is the most interesting movie.
The Great Wall is one of the most famous places in China.
That was the worst day of my life!
I think this is the interestingest movie. _______________________________________________
2. The Great Wall is one of most famous places in China.
_______________________________________________
3. That was the baddest day of my life!
_______________________________________________
Homework
从Unit 1- 4 单词列表中选出10个形容词/副词，写出其最高级形式，并查阅是否正确。
用英语描述自己的 “家乡之最”（如最美的景点、最美味的食物等 ），写一篇80 词的短文，下节课分享 。

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