(共25张PPT)
Unit 4
Unit 4 The Wonders of Nature
能够梳理本单元中出现的反义词，掌握利用反义词对照的方法理解和记忆单词的策略。
能够掌握“How+ adj./ adv.”结构，并学会使用该结构询问数量、频率、速度等。
能够通过语篇练习词汇，并通过大数字和形容词的比较级了解贝加尔湖。
The old house located on the southern hill is too risky to live in.
这座位于南山上的老房子住起来太危险了。
risky
adj. 有危险（或风险）的
southern
adj. 南部的；向南的
located
adj. 位于；坐落在
This type of freshwater fish is very common.
这种淡水鱼很常见。
freshwater
adj. 淡水的；淡水中生长的
type
n. 类型；种类
The natural beauty of Wulingyuan in Zhangjiajie attracts thousands of travellers every year.
张家界武陵源的自然美景每年吸引成千上万的游客。
attract
v. 吸引；招引
natural
adj. 自然的；天然的
traveller
n. 旅行者；游客
The cat is curious about the box.
这只猫对盒子很好奇。
curious
adj. 好奇的；求知欲强的
safe B. bottom C. southern
D. above E. unusual F. living
G. high H. die
____1. below ____5. top
____2. common ____6. northern
____3. low ____7. risky
____4. dead ____8. survive
Match the words on the left with their opposites on the right.
D
E
G
F
B
C
A
H
below-above common-unusual low-high dead-living
top-bottom northern-southern risky-safe survive-die
Fill in the blanks using the opposite words.
1. It is ______ to wait for the traffic light to turn green, but it
is ______ to walk across the road without looking.
2. Seeing a cat in the street is very ________, but seeing a
wild tiger there is ________.
3. The kite is _______ the clouds, and the bridge is ______
the river.
4. Without food and water, plants cannot ______; they will
______.
safe
risky
common
unusual
above
below
survive
die
Read the examples and make more sentences using how and the words in the box.
How far is it from your home to school
How heavy is a blue whale
How large is your country
How often do you exercise
通过观察我们可以发现How后接的单词均为形容词或副词，即“How +adj./ adv.”。
long high deep old fast soon
1. How long is the longest river in the world
2. How high is the tallest mountain in the world
3. How deep is the Mariana Trench
4. How old is the oldest tree in your hometown
5. How fast is the fastest land animal
6. How soon will the train leave
询问长度
询问高度
询问深度
询问速度
How _______ do you brush your teeth every day
How _______ is your school bag
How _______ can you run 100 metres
How _______ is the river near your house
How _______ is the zoo from here
Fill in possible adjectives to complete the dialogue.
Have you ever heard of Lake Baikal
Where is it
Complete the passage with the correct forms of the words in the box.
deep survive wonderful surface dive
Located in Siberia, Russia, Lake Baikal is one of the world’s most famous lakes. It is the ______ freshwater lake in the world. To reach the bottom, you must ______ 1,620 metres! It is also larger than most other lakes. Its _______ covers 31,500 square kilometres. That is bigger than the country of Belgium! Lake Baikal is cold most of the year. But over 1,200 different types of animals can still ______ in this environment. Today, the lake still attracts many curious travellers. After all, it is a great natural _______!
deepest
dive
surface
survive
wonder
1. How deep is Lake Baikal
2. How large is it
3. What did the passage compare Lake Baikal with Why
4. Why do you think many travellers visit Lake Baikal
It is 1,620 metres deep.
Its surface covers 31,500 square kilometres.
It compared Lake Baikal with the country of Belgium because it is larger than most other lakes.
Answer questions about Lake Baikal.
First, it is the deepest and oldest freshwater lake in the world. Second, the scenery around the lake is beautiful in every season.
located adj. 位于，坐落于
常用结构：
be located in 坐落于，位于
1. Located in Siberia, Russia, Lake Baikal is one of the world’s most famous lakes.
贝加尔湖位于俄罗斯西伯利亚地区，是世界上最著名的湖泊之一。
e.g. Chaka Salt Lake is a beautiful lake located in Chaka Town in Qinghai, China.
茶卡盐湖是一座美丽的湖泊，位于中国青海的茶卡镇。
attract v. 吸引
attract the attention of ... 吸引……的注意
attraction n. 向往的地方；吸引力
tourist attraction 旅游景点
e.g. They hope that Hua Hua can help attract more visitors to Chengdu.
他们希望花花能帮助吸引更多游客来成都。
After a decade, his home was turned into a popular tourist attraction.
十年后，他的家变成了热门旅游景点。
2. Today, the lake still attracts many curious travellers.
如今，这座湖泊仍然吸引着许多好奇的游客。
be curious about ... 对……感到好奇
e.g. She is curious about everything and she loves to meet new people and listen to their stories.
她对一切都充满好奇，喜欢结识新朋友，听他们讲故事。
3. After all, it is a great natural wonder.
毕竟，它是一处伟大的自然奇观。
natural adj. 自然的；天然的；天生的
常用于句型It’s natural (for sb.) to do sth.中。
e.g. Without plants, the natural world would be very different!
如果没有植物，自然界将会大不相同！
Babies have a natural fear of falling.
婴儿本能地害怕跌倒。
It's not natural for a child of his age to be so quiet.
像他这个年纪的孩子如此安静不正常。
【语境应用】选择natural的汉语意思
A. 本能的 B. 自然的 C. 未经加工的
(1) There are lots of natural disasters (灾害) this year. _______
(2) This juice is 100% natural. _______
(3) It's natural to worry about your parents. _______
【链接】nature n. 大自然，自然界
B
C
A
I can
梳理本单元中出现的反义词，掌握利用反义词对照的方法理解和记忆单词的策略。
能够掌握“how+adj./ adv.”结构，用该结构询问数量、频率、速度。
通过语篇练习词汇，并通过大数字和形容词的比较级了解贝加尔湖
Review the new words of this part.
Make up dialogues to talk about the wonders of nature. Use "how + adj./ adv." in your sentences.
