Unit 4 The Wonders of Nature 单词精讲课件(共45张PPT) 人教版英语八年级下册

(共45张PPT)
Unit 4 The Wonders of Nature
人教版八年级下册英语
单词讲解
Vocabulary
wonder / w nd (r)/ n. 奇观；惊叹 v. 琢磨；想知道；感到诧异
desert / dez t/ n. 沙漠；荒原
below /b l / prep. & adv. 在（……）下面；低于
level / levl/ n. 高度；水平；程度
surface / s f s/ n. 表面；表层
depth /depθ/ n. 深（度）；纵深
unusual / n ju u l/ adj. 特别的；不寻常的
bottom / b t m/ n. 底部；最下部
development /d vel pm nt/ n. 发展；壮大
mile /ma l/ n. 英里
pool /pu l/ n. 池塘；水坑
Vocabulary
climber / kla m (r)/ n. 攀登者；登山者
northern / n n/ adj. 北部的；向北的
survive /s va v/ v. 生存；存活；艰难度过
condition /k n d n/ n. 环境；条件；状态
degree /d ɡri / n. 度；度数；程度
changeable / t e nd bl/ adj. 可能变化的；易变的；常变的
death /deθ/ n. 死亡；毁灭；破灭
above / b v/ prep. & adv. 在（……）上方；高于
shoulder / ld (r)/ n. 肩膀；肩部
successfully /s k sesf li/ adv. 成功地；顺利地
Vocabulary
risk /r sk/ v. 使……冒风险（或面临危险） n. 危险；风险
curiosity / kj ri s ti/ n. 好奇心；求知欲
explorer / k spl r (r)/ n. 探险者；勘探者
simply / s mpli/ adv. 仅仅；只；简单地
risky / r ski/ adj. 有危险（或风险）的
southern / s n/ adj. 南部的；向南的
type /ta p/ n. 类型；种类
attract / tr kt/ v. 吸引；招引
curious / kj ri s/ adj. 好奇的；求知欲强的
Vocabulary
traveller / tr v l (r)/ (=traveler) n. 旅行者；游客
natural / n t r l/ adj. 自然的；天然的；天生的
coast /k st/ n. 海岸；海滨
include / n klu d/ v. 包含；包括
sand /s nd/ n. 沙子
alive / la v/ adj. 活着；在世；有活力
Words and expressions
Unit 4
wonder
/ w nd (r)/ n. 奇观；惊叹 v. 琢磨；想知道；感到诧异
短语
natural wonder 自然奇观
wonder about sth 琢磨某事
wonder at sth 对某事感到惊叹
例句
The Great Barrier Reef is a famous natural wonder in the world.
大堡礁是世界上著名的自然奇观。
I wonder how many kinds of corals live in the sea.
我想知道海里生活着多少种珊瑚。
词性变换
adj. wonderful 奇妙的；极好的
n. wonderment 惊叹；诧异
desert
/ dez t/ n. 沙漠；荒原
短语
in the desert 在沙漠里
the Taklimakan Desert 塔克拉玛干沙漠
desert land 荒漠地带
例句
Few plants can survive in the dry desert.
很少有植物能在干旱的沙漠中存活。
The Taklimakan Desert is in the northern part of China.
塔克拉玛干沙漠位于中国的北部地区。
词性变换
adj. deserted 荒芜的；无人的
v. desert /d z t/ 抛弃；离开
below
/b l / prep. & adv. 在（……）下面；低于
短语
below sea level 低于海平面
far below 远在下方
sit below sb 坐在某人下方
例句
The Dead Sea is more than 400 metres below sea level.
死海位于海平面以下400多米处。
The temperature in the desert at night is often below zero.
沙漠里的夜间气温常常低于零度。
词性变换
反义 prep.&adv. above 在……上方；高于
level
/ levl/ n. 高度；水平；程度
短语
sea level 海平面
a high level of 高水平的
on the same level 在同一水平
例句
Mount Qomolangma is the highest mountain above sea level in the world.
珠穆朗玛峰是世界上海平面以上最高的山峰。
His English level has improved a lot this term.
这学期他的英语水平提高了很多。
词性变换
adj. level 水平的；平坦的
v. level 使平坦；使平等
surface
/ s f s/ n. 表面；表层
短语
the surface of the sea 海面
on the surface 在表面
below the surface 在表层之下
例句
Some turtles like to lie on the surface of the sand to rest.
一些海龟喜欢躺在沙子表面休息。
We can’t see the fish swimming below the surface of the lake.
我们看不到在湖面下游动的鱼。
词性变换
v. surface 浮出水面；显露
adj. surface 表面的；表层的
depth
/depθ/ n. 深（度）；纵深
短语
the depth of... ……的深度
a depth of 100 metres 100米的深度
in depth 深入地
例句
No one knows the exact depth of the Mariana Trench.
没有人知道马里亚纳海沟的准确深度。
The depth of this freshwater pool is about 8 metres.
这个淡水池塘的深度大约是8米。
词性变换
adj. deep 深的
adv. deeply 深深地
v. deepen 加深；变深
unusual
/ n ju u l/ adj. 特别的；不寻常的
短语
an unusual animal 一种罕见的动物
unusual weather 反常的天气
it’s unusual to do sth 做某事是不寻常的
例句
It’s unusual to see so many turtles on the coast in winter.
冬天在海岸上看到这么多海龟是很不寻常的。
She found an unusual coral on the reef during her trip.
她旅行时在礁脉上发现了一块奇特的珊瑚。
词性变换
adj. usual 通常的；平常的
adv. usually 通常；平常
adv. unusually 不寻常地
bottom
/ b t m/ n. 底部；最下部
短语
the bottom of the sea 海底
at the bottom of... 在……的底部
from the bottom to the top 从下到上
例句
Scientists are trying to explore the bottom of the Mariana Trench.
科学家们正试图探索马里亚纳海沟的底部。
There is a small stone at the bottom of the pool.
池塘的底部有一块小石头。
词性变换
adj. bottom 底部的；最后的
development
/d vel pm nt/ n. 发展；壮大
短语
the development of... ……的发展
economic development 经济发展
with the development of 随着……的发展
例句
With the development of science, we know more about the ocean.
随着科学的发展，我们对海洋有了更多的了解。
The development of tourism makes more people know this beautiful coast.
旅游业的发展让更多人了解了这片美丽的海岸。
词性变换
v. develop 发展；开发；培养
adj. developed 发达的
adj. developing 发展中的
mile
/ma l/ n. 英里
短语
a few miles 几英里
miles away 数英里远
per mile 每英里
例句
The Great Barrier Reef is more than 100 miles long.
大堡礁的长度超过100英里。
We walked a few miles along the coast to see the coral reefs.
我们沿着海岸走了几英里去看珊瑚礁。
词性变换
复数 miles
pool
/pu l/ n. 池塘；水坑
短语
a freshwater pool 淡水池塘
a small pool of water 一小水坑
swim in the pool 在池塘里游泳
例句
Many small animals come to this pool to drink water every day.
每天都有许多小动物来这个池塘喝水。
There is a small pool at the foot of the cliff.
悬崖脚下有一个小池塘。
词性变换
v. pool 集中（资源、钱财等）
climber
/ kla m (r)/ n. 攀登者；登山者
短语
a mountain climber 登山者
an experienced climber 有经验的攀登者
例句
The climbers tried their best to reach the top of the mountain.
攀登者们竭尽全力登上山顶。
A good climber must learn to face all kinds of bad conditions.
一名优秀的攀登者必须学会面对各种恶劣环境。
词性变换
v. climb 攀登；攀爬；登山
n. climbing 攀登；登山运动
northern
/ n n/ adj. 北部的；向北的
短语
the northern part of... ……的北部
northern China 中国北方
northern climate 北方气候
例句
The northern part of the desert is much colder in winter.
沙漠的北部在冬天要冷得多。
We will travel to the northern coast of the country next month.
下个月我们将前往这个国家的北部海岸。
词性变换
n. north 北；北方
adv. north 向北方
adj. north 北方的
survive
/s va v/ v. 生存；存活；艰难度过
短语
survive in... 在……中生存
survive on sth 依靠某物生存
struggle to survive 挣扎求生
例句
It’s hard for plants to survive in the dry desert.
植物很难在干旱的沙漠中生存。
These small fish can survive only in clean freshwater.
这些小鱼只能在干净的淡水中存活。
词性变换
n. survival 生存；幸存
n. survivor 幸存者；生还者
adj. survivable 能存活的；能幸存的
condition
/k n d n/ n. 环境；条件；状态
短语
living conditions 生活环境
bad conditions 恶劣的环境
on the condition that 条件是
例句
Climbers have to get used to the bad conditions on the mountain.
攀登者必须适应山上的恶劣环境。
The living conditions of animals in the natural park are very good.
自然公园里动物的生存环境非常好。
词性变换
adj. conditional 有条件的
adj. unconditional 无条件的
v. condition 使适应；使习惯于
degree
/d ɡri / n. 度；度数；程度
短语
30 degrees 30度
a high degree of 高度的
to some degree 在某种程度上
例句
The temperature in the desert can reach 40 degrees in summer.
沙漠里的夏季气温能达到40度。
To some degree, the development of technology helps us explore nature.
在某种程度上，科技的发展帮助我们探索自然。
词性变换
复数 degrees
changeable
/ t e nd bl/ adj. 可能变化的；易变的；常变的
短语
changeable weather 多变的天气
changeable temperature 多变的气温
a changeable mood 多变的心情
例句
We need to take more clothes because of the changeable temperature in the desert.
因为沙漠里的气温多变，我们需要多带些衣服。
词性变换
v. change 改变；变化
n. change 变化；改变
adv. changeably 易变地
death
/deθ/ n. 死亡；毁灭；破灭
短语
the death of... ……的死亡
die from 死于（外因）
die of 死于（内因）
例句
Lack of water may lead to the death of animals in the desert.
缺水可能会导致沙漠里的动物死亡。
The old man was sad about the death of his little dog.
这位老人为他小狗的离世而难过。
词性变换
v. die 死；死亡
adj. dead 死的；无生命的
adj. dying 垂死的；临终的
above
/ b v/ prep. & adv. 在（……）上方；高于
短语
above sea level 高于海平面
far above 远在上方
fly above the sea 在海面上空飞行
例句
Mount Qomolangma is about 8848 metres above sea level.
珠穆朗玛峰的海拔约为8848米。
Some birds are flying above the surface of the sea.
一些鸟儿正在海面上空飞翔。
词性变换
反义 prep.&adv. below 在……下方；低于
adj. above 上述的；上面的
shoulder
/ ld (r)/ n. 肩膀；肩部
短语
on the shoulder 在肩膀上
shoulder to shoulder 肩并肩
tap sb on the shoulder 轻拍某人的肩膀
例句
The climber carried a heavy bag on his shoulder.
这位攀登者肩上扛着一个沉重的包。
They walked shoulder to shoulder along the coast.
他们肩并肩沿着海岸行走。
词性变换
v. shoulder 承担；肩负
复数 shoulders
successfully
/s k sesf li/ adv. 成功地；顺利地
短语
finish sth successfully 成功完成某事
solve a problem successfully 成功解决问题
例句
The explorers successfully reached the top of the mountain.
探险家们成功登上了山顶。
She successfully found a kind of unusual coral in the sea.
她在海里成功发现了一种罕见的珊瑚。
词性变换
v. succeed 成功
n. success 成功
adj. successful 成功的
risk
/r sk/ v. 使……冒风险（或面临危险） n. 危险；风险
短语
take a risk 冒险
at the risk of 冒着……的风险
risk doing sth 冒险做某事
例句
Climbers often risk their lives to climb high mountains.
攀登者常常冒着生命危险去攀登高山。
It’s a big risk to swim in the deep part of the sea alone.
独自在大海的深处游泳是很大的风险。
词性变换
adj. risky 有危险的；冒险的
n. risk-taker 敢于冒险的人
curiosity
/ kj ri s ti/ n. 好奇心；求知欲
短语
out of curiosity 出于好奇心
satisfy one’s curiosity 满足某人的好奇心
a strong curiosity 强烈的好奇心
例句
His curiosity made him want to explore the bottom of the sea.
他的好奇心让他想要去探索海底。
We should encourage children’s curiosity about nature.
我们应该鼓励孩子们对大自然的好奇心。
词性变换
adj. curious 好奇的；求知欲强的
adv. curiously 好奇地
explorer
/ k spl r (r)/ n. 探险者；勘探者
短语
a famous explorer 著名的探险家
an Arctic explorer 北极探险家
例句
Many brave explorers went to the desert to explore its secrets.
许多勇敢的探险家前往沙漠探索它的奥秘。
The explorer found a new kind of plant in the northern forest.
这位探险家在北方的森林里发现了一种新的植物。
词性变换
v. explore 探索；勘探；考察
n. exploration 探索；勘探
simply
/ s mpli/ adv. 仅仅；只；简单地
短语
simply because 只是因为
simply do sth 简单地做某事
not simply 不仅仅
例句
He went to the coast simply to see the beautiful coral reefs.
他去海岸只是为了看美丽的珊瑚礁。
This problem is not simply a matter of money.
这个问题不仅仅是钱的问题。
词性变换
adj. simple 简单的；单纯的
n. simplicity 简单；质朴
risky
/ r ski/ adj. 有危险（或风险）的
短语
a risky trip 一次冒险的旅行
a risky decision 冒险的决定
it’s risky to do sth 做某事是有风险的
例句
It’s risky to climb the mountain in such bad weather.
在这样恶劣的天气里登山是有风险的。
Swimming in the deep sea alone is a risky thing to do.
独自在深海游泳是一件有风险的事。
词性变换
n. risk 危险；风险
v. risk 冒……的风险
比较级 riskier 最高级 riskiest
southern
/ s n/ adj. 南部的；向南的
短语
the southern part of... ……的南部
southern China 中国南方
southern coast 南部海岸
例句
The southern coast of the country is famous for its coral reefs.
这个国家的南部海岸以珊瑚礁闻名。
It’s warm all year round in the southern part of the island.
这个岛屿的南部一年四季都很温暖。
词性变换
n. south 南；南方
adv. south 向南方
adj. south 南方的
type
/ta p/ n. 类型；种类
短语
a new type of 一种新型的
different types of 不同种类的
this type of 这种类型的
例句
There are many different types of corals in the Great Barrier Reef.
大堡礁里有许多不同种类的珊瑚。
This type of turtle lives in the warm southern sea.
这种类型的海龟生活在温暖的南部海域。
词性变换
v. type 打字；输入
n. typist 打字员
attract
/ tr kt/ v. 吸引；招引
短语
attract sb 吸引某人
attract attention 吸引注意力
be attracted by 被……吸引
例句
The beautiful coral reefs attract many travellers every year.
美丽的珊瑚礁每年吸引着许多游客。
The unusual animals in the natural park attract a lot of children.
自然公园里罕见的动物吸引了很多孩子。
词性变换
n. attraction 吸引力；景点
adj. attractive 有吸引力的；迷人的
curious
/ kj ri s/ adj. 好奇的；求知欲强的
短语
be curious about sth 对某事感到好奇
be curious to do sth 急于做某事
a curious child 好奇的孩子
例句
The little boy is curious about all the animals on the coast.
这个小男孩对海岸上所有的动物都感到好奇。
She is curious to know what’s at the bottom of the pool.
她急于想知道池塘底部有什么。
词性变换
n. curiosity 好奇心；求知欲
adv. curiously 好奇地
traveller
/ tr v l (r)/ (=traveler) n. 旅行者；游客
短语
a foreign traveller 外国游客
a light traveller 轻装旅行者
例句
Many travellers come to see the natural wonder every year.
每年都有许多游客来观赏这处自然奇观。
The traveller took many photos of the coral reefs by the coast.
这位游客在海岸边拍了很多珊瑚礁的照片。
词性变换
v. travel 旅行；游历
n. travel 旅行
adj. travelling 旅行的
natural
/ n t r l/ adj. 自然的；天然的；天生的
短语
natural wonder 自然奇观
natural beauty 自然之美
natural resources 自然资源
例句
The Great Barrier Reef is one of the greatest natural wonders in the world.
大堡礁是世界上最伟大的自然奇观之一。
We should protect the natural environment for animals and plants.
我们应该为动植物保护自然环境。
词性变换
n. nature 自然；大自然；本性
adv. naturally 自然地；天生地
Exercises
Unit 4
1. The ________ (沙漠) is very dry and hot.
2. There are many trees ________ (在……下面) the mountain.
3. What’s the ________ (深度) of the river
4. This is an ________ (不寻常的) plant.
5. At the ________ (底部) of the sea, there are many strange fish.
6. The n________ part of China is colder in winter.
7. We must try our best to s________ in the hard life.
desert
below
depth
unusual
bottom
根据句意及汉语或首字母提示完成单词。
orthern
urvive
8. The weather here is c__________, so take more clothes.
9. He r________ his life to save the boy in the river.
10. The little girl is c________ about everything new.
11. The e________ found a new kind of plant in the forest.
12. The s________ coast of the country is very beautiful.
13. We can see many different t________ of flowers in the park.
14. Many t_________ come to visit the Great Barrier Reef every year.
15. We must keep the animals a______.
hangeable
isked
urious
根据句意及汉语或首字母提示完成单词。
xplorer
outhern
ypes
ravellers
live
用单词的适当形式填空。
1. This is a __________ (wonder) place to visit.
2. The ___________ (develop) of the city is very fast.
3. These ________ (climb) come from different countries.
4. It’s ________ (usual) to see such a big fish.
5. They ____________ (success) finished the work last week.
wonderful
development
climbers
unusual
successfully
用单词的适当形式填空。
6. ________ (nature) wonders are very beautiful.
7. The ________ (explore) found many new things.
8. She is ________ (curiosity) about everything.
9. It’s ________ (risk) to swim in the deep sea.
10. Many __________ (travel) come here every year.
Natural
explorer
curious
risky
travellers
选词填空。
wonder, survive, attract, natural, below, risk
1. The Great Wall is one of the greatest ________ wonders in the world.
2. Few animals can ________ in the dry desert without water.
3. The Dead Sea is 400 meters ________ sea level.
4. Beautiful beaches ________ thousands of travellers every year.
5. It’s a ________ to go climbing alone in changeable weather.
natural
survive
below
attract
risk
See You!