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(共27張PPT)
Unit4
Amazing Plants and Animals
4.3
Section A
(3a—3c)
Grammar Focus
3a
Read the sentences and notice the words in bold. What are the ways to form a superlative adjective or adverb
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.
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
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 most colourful
(the) highest
the largest
the heaviest
3c
Complete the passage with the superlative forms of the words in the box.
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 ______________________.
the most ancient
the most beautiful
ancient beautiful common good popular
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 joy to their heart.
the best
the most common
the most popular
1. The biggest land animal in the world is the African elephant.世界上最大的陸地動物是非洲象。(教材第 35 頁，3a)
land /l nd/ [名詞] 陸地；土地
They can′t live on land. 它們不能在陸地上生存。
land 是不可數名詞，on land 意為“在陸地上”。
[拓展] land 還可作動詞，有“降落；著陸”之意。
The plane landed safely.
飛機安全地著陸了。
1. The biggest land animal in the world is the African elephant.世界上最大的陸地動物是非洲象。(教材第 35 頁，3a)
African /′ fr k n/ ① [形容詞] 非洲的；非洲人的
China often helps African countries. 中國經常幫助非洲國家。
② [名詞] 非洲人
Fish is a staple in the diet of many Africans.
魚是許多非洲人飲食中的主食。
[拓展] ①Africa [專有名詞] 非洲
Most of the lions are from South Africa.
這些獅子大多數來自南非。
② 世界七大洲的表達：
Asia 亞洲 Europe 歐洲 Africa 非洲
Oceania 大洋洲 Antarctica 南極洲
North America 北美洲 South America 南美洲
2. Among all animals，I love pandas the best 在所有的動物中，我最喜歡熊貓。(教材第 35頁，3b)
among [介詞] 在······中；在三者或以上中 (分配或選擇)
A British woman was among the survivors.
幸存者中有一位英國婦女。
[辨析] among 與 between
among 表示在三者或三者以上之間，其賓語通常是表示籠統數量或具有復數意義的名詞或代詞
between 表示在兩者之間，常用短語：between...and... (在······和·······之間)
3. It has the most colourful wings. 它有最色彩斑斕的翅膀。(教材第 35 頁，3b)
wing /w / [可數名詞] ①翅膀；翼
The swan flapped its wings and flew away.
天鵝拍打著翅膀飛走。
② (飛行器的) 翅膀；機翼
Wings help the airplane keep its balance.
機翼有助于飛機保持平衡。
4. Some could stand up to three metres tall and weigh up to 860 kg. 有些象鳥站立時高達三米，體重可達 860 千克。(教材第 35 頁，3b)
up to ① 接近；直到
Read up to page 100. 讀到第 100 頁。
② (體力或智力上) 能勝任
He′s not up to the job. 他無法勝任這項工作。
[拓展] 與 up 相關的其他常用短語：
be up to sb. 由某人決定
up and down 上下波動
up for 愿意參與(某活動)
4. Some could stand up to three metres tall and weigh up to 860 kg. 有些象鳥站立時高達三米，體重可達 860 千克。(教材第 35 頁，3b)
weigh /we / [動詞] 有······重；稱重量
對重量提問常用“How much do/does/did...weigh ”或“How heavy is/are/was/ were... ”。
[拓展] ① weigh [及物動詞] 權衡；斟酌；認真考慮
weigh sth. (up) 權衡；認真考慮
You have to weigh whether a human life is more important than an animal′s life.
你必須權衡人的生命是否比動物的生命更重要。
② weight [名詞] 重量；分量
put on weight 增重
lose weight 減重
the weight of... ·······的重量
What′s the weight of the pig
這頭豬的重量是多少
5. Ginkgo trees first appeared over 200 million years ago. 銀杏樹最早出現于 2 億多年前。 (教材第 35 頁，3c)
over [介詞] ①(數量、時間等)多于，超過
over 作此意講時相當于 more than，其后常接數詞表示數量、時間等。
She is over forty. 她 40 多歲了。
② 懸在······上面；向······上方
He held a large umbrella over the lady.他給那位女士撐起了一把大傘。
③ 在······期間
How fast technology has progressed over the years!這些年來，技術進步得多快啊!
over the years 在這幾年間；這些年來
6. When autumn comes，one of the most popular activities is to take a walk under ginkgo trees. 當秋天來臨時，最受歡迎的活動之一便是在銀杏樹下散步。(教材第 35 頁，3c)
動詞不定式 (短語) 作表語
本句中的“to take a walk under ginkgo trees”為動詞不定式短語，在 be 動詞后作表語。
6. When autumn comes，one of the most popular activities is to take a walk under ginkgo trees. 當秋天來臨時，最受歡迎的活動之一便是在銀杏樹下散步。(教材第 35 頁，3c)
take a walk 散步
其同義短語為 have a walk 和 go for a walk。walk 在此處作名詞，意為“行走；步行”。
We often take a walk after dinner. 晚飯后我們經常去散步。
[拓展] ①take a＋名詞，意為“做······事情”，表示與該名詞意思相關的動作。類似的用法還有：
take a rest 休息 take a look 看一看
② walk 還可作動詞，意為“行走；步行”，是不及物動詞。
I walk to school every day. 我每天都步行去上學。
(湖北武漢)—Laura spoke very slowly to people to _______ what she would say.
—She just wanted to think about what others were feeling.
A. survey B. weigh
C. support D. repeat
單項選擇。
B

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