Unit 4 The wonders of Nature单元复习课件【新人教(2024)版八下英语】

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Unit 4 The wonders of Nature单元复习课件【新人教(2024)版八下英语】

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Unit 4
The wonders of Nature
八年级
人教版

单元复习
复习内容
01
重点单词过关
05
写作指导
02
重点短语过关
03
重点句型过关
04
语法点精讲
01
重点单词过关
重点单词过关
1.________ (v. 发展;开发) →______________ (n. 发展)→______________( adj.发达的;先进的→________________(adj.发展中的)
2.______ ( adj.通常的;寻常的) → _________ (adv.通常地;一般地)→
____________ (adj.特别的;不寻常的)
3.___________ (adj.遥远的;远处的) → _______________ (n.距离;遥远)
4.__________ (v.决定) → ___________ (adj.有决心的;坚的)→____________ ( n.决心)
5._______________ ( v.测量;量度为) → _______________ ( n.数量;测量)
develop
development
developed
developing
unusual
distance
usually
usual
determined
determine
measure
determination
词形转换
distant
measurement
重点单词过关
6.________ ( v.生存;存活) →______________ (n. 幸存者;生还)
7.______ (v. 位于;坐落于) → _________ ( adj.位于;坐落于)→
____________ (.n. 定位)
8.___________ ( v.探险;勘探) → ___________ ( n.探险者;勘探者)→ _________________( n.探险;勘探)
9._________(adj.简单的;简朴的)→ _________adv.仅仅;只;简单地;简朴地
10.__________(v.使······冒风险;n.危险;风险)→ _________(adj. 有危险)
survive
survivor
locate
explorer
exploration
located
location
simply
simple
词形转换
explore
risk
risky
重点单词过关
11.________ (v.吸引;招引;引起反应)→ ___________( adj.有吸引力的;漂亮的)→ _____________( n.向往的地方)
12.__________(v&n.改变;变化)→ _______________(adj.可能变化的;易变的;常变的)→ ______________( adj.不可改变的)
13._________( v&n.研究;调查)→ ____________(n.研究者)
14.________(v.死去,死亡)→ ________( adj.死的)→_________( n.死士;毁灭,破灭)→ __________(adj.垂死的)
attract
attractive
changeable
unchangeable
attraction
researcher
research
词形转换
change
die
dead
death
dying
重点单词过关
1.dive的用法
dive① 名词 潜水;(头和双臂先人水)跳水;俯冲
a dive to a depth of 18 metres 潜到18米水深处
a dive from the 10-metre platform 10米台跳水
② 不及物动词 潜水;(头和双臂先人水)跳水;俯冲(其过去式为dived或dove。)
go diving 去潜水 dive into 跳入……中,潜入
拓展: diver(可数名词) 潜水员,跳水者
飞行员拉起来了俯冲的飞机。The pilot pulled out of the dive.
看!那个男孩正跳入水中。Look! The boy is diving into the water.
重点单词过关
① 动词 研究;调查
research into/in/on 对……进行研究
② 名词 研究;调查
常与动词(短语)do,make,carry out等连用,表示"做/进行研究",其后可接介词 on,into等引出研究的内容。
我正在研究一个课题。I'm researching a topic.
买房子之前做些调查是个好主意。
It's a good idea to do some research before you buy a house.
2.research的用法
重点单词过关
3.辨析:below与under 两者都表示"在……下方",但具体含义不同。 below 不强调垂直关系,只要位置低于某物即可,与above相对
under 强调垂直下方的位置关系,与over相对
这个村庄在山下。
The village is below the mountain.(村庄和山不在同一垂直线上)
我通常把篮球放在椅子下。
I usually put the basketball under the chair.(篮球和椅子在同一垂直线上)
develop 作动词
1) 表示 “(社会、经济、国家等)发展;进步”
e.g. China has developed rapidly in the past 40 years.(中国在过去 40 年里发展迅速。)
2) 表示 “培养(技能、习惯、兴趣等)”
e.g. It’s important to develop good eating habits.(培养良好的饮食习惯很重要。)
3)表示 “(疾病、问题等)出现;发展”
e.g. The problem developed into a serious crisis.(这个问题逐渐发展成了严重的危机。)
重点单词过关
4.develop的用法
重点单词过关
4.develop的用法
development是develop的名词形式,意为“发展;进步;培养……”等
the development of ... ……的发展/培养
e.g. The development of technology has changed our daily lives.
科技的发展改变了我们的日常生活。
Language development in children starts at a very early age.
儿童的语言能力发展从很小的时候就开始了。
in the development of... 在……的发展过程中
Computers play an important role in the development of modern science. 计算机在现代科学发展中起重要作用。
develop v.
增强;发展
developed adj. 发达的
developing adj. 发展中的
development n. 发展;壮大
重点单词过关
根据句意用所给词的适当形式填空
1. The _________ (deep) of the swimming pool for kids is 1.2 metres.
2. Nature lovers can enjoy a large number of natural ________ (wonder) in China.
3. Choosing the right pet is an important thing, so we spent time __________
(research) different animals before picking our new pet.
4. He was a(n) ________ (usual) man with great business talents.
5. Of all the mountains, Mount Qomolangma is the _________ (high) and the
most famous.
重点单词过关
depth
wonders
researching
unusual
highest
重点单词过关
6. Both the Nile and the Yellow River helped ancient ___________
(civilization) to develop.
7. ___________ (protect) rivers is our duty.
8. The main purpose of his holiday to Greece was to go ________ (dive).
9. Many deep-sea animals are __________ (color) and strange.
10.The weather in spring is often       (change) —one moment it’s sunny, and the next it rains.
civilizations
Protecting
diving
colorful
changeable 
1. The exact ___________ of the room are 3 metres 20 by 2 metres 84.
2. The area of this national park is about 30,000 _________________.
3. Smoking is harmful to people's health _________ the environment.
4. Because of the interesting _________ of Asian life, The Travels of Marco Polo soon
became well known.
5. Different ________ of books in the library are suitable for students of different ages.
用方框中所给单词或短语的适当形式填空
重点单词过关
level description square kilometre measurement as well as
measurements
square kilometres
as well as
description
levels
02
重点短语过关
重点短语过关
汉译英
1. 自然奇迹;自然奇观_______________
2.与......联系________________
3.在地球上 _______
4.高于/低于海平面 _______
5.潜入深海 _______________________
6.有特殊能力 _________________
7.顺便说一下;顺便问一下 _________________
the wonders of nature
connect......with...
on earth
above/below sea level.
dive into the deep sea
have unusual abilities
by the way
重点短语过关
8. 在······的底部_____________
9. 深海动物 ______________
10.不惜任何代价__________________
11.在尺寸上_________________
12.古代文明_________________
13. ······的总面积_____________________
14....... 的发展_________________
15.对某事好奇______________________
at the bottom of···
deep-sea animals
at all costs
in size
ancient civilization
a total area of
the development of ……
be curious about sth
重点短语过关
16.正如某人所说 _____________
17.只要;只有当......(条件状语从句) ______________
18.决心做某事_______________________________
19.变幻莫测的天气_________________
20.成功登顶_________________
21.一点一点地;逐渐地_____________________
22. 做研究;进行调查;做实验_________________
23.极目所尽________________
as sb put it
only if
be determined to do sth
changeable weather
reach the top successfully
bit by bit =little by little
do research
as far as the eye can/could see
1. 亚马逊河是南美洲最长的河流。
The Amazon River is _____ _____ _____ in South America.
2. 顺便问一下,你知道多瑙河穿过多少个国家吗?
____ _____ _____, do you know how many countries the Danube River flows through
3. 我们应该竭尽全力保护地球上的每一条河流。
We should protect every river on Earth _____ _____ _____.
4. 长江和珠江都对中国的发展很重要。
_____ the Yangtze River _____ the Pearl River are important for China’s development.
5. 在这些交通工具中,飞机的航程最远。
Among these means of transport, the plane _____ _____ _____.
the longest river
By the way
by all means
Both
and
travels the farthest
根据句意及汉语提示完成句子。每空一词。
6.她逐渐学会了弹钢琴。
She learned to play the piano_____ _____ _______.
7.这本小说是青少年中最受欢迎的书籍之一。
This novel is one of ________ ________ __________ ________among teenagers.
8.那个消防员冒着生命危险从着火的大楼里救出了那个孩子。
The firefighter ______ ______ ______to save the child from the burning building.
bit by bit
重点短语过关
the most popular books
risked his life
03
重点句型过关
重点句型过关
1.It went on for as far as the eye could see.
这是一个主谓结构的简单句,整体表达“(某物)一眼望不到头”。
主语:It(指代前文提到的事物,如道路、草原等,此为瀑布)
谓语:went on(动词短语,表“延伸、持续”)
状语:for as far as the eye could see(介词短语作程度状语,其中 as far as 引导比较状语从句 the eye could see ,意为“远至视线所及之处”)
重点句型过关
2.There, we felt the water rush past us and become a part of the waterfall.
在那里,我们感受到水流从身旁奔涌而过,而后汇入瀑布之中。
这是一个主谓宾结构的简单句,包含两个并列的宾语补足语。
状语:There(地点状语,表“在那里”)
主语:we(动作的发出者)
谓语:felt(感官动词,表“感受到”)
宾语:the water(动作的对象)
宾语补足语: rush past us 和 become a part of the waterfall 是两个并列的不带to的不定式短语,用来补充说明宾语 the water 的动作,由and连接。
重点句型过关
3.Both the Nile and the Yellow River helped ancient civilizations to develop.
both... and... ……和……都;既……又……
通常连接两个并列的成分。连接两个并列主语时,谓语动词用复数形式。
Both my brother and I are interested in deep-sea animals.
我和哥哥都对深海动物感兴趣。
重点句型过关
4. Did you know it’s the longest river in the world
本句为复合句,“Did you know... ” 是主句,是一般过去时的一般疑问句结构;“it’s the longest river in the world” 是宾语从句,作 know的宾语,要用陈述语序。
常见例句:
Did you hear he will come to our school
你听说他将来我们学校了吗?
重点句型过关
5.It is because human curiosity and ambition cannot be stopped.这是因为人类的好奇心和野心是无法被阻挡的。
整体为表语从句结构, It 作形式主语(指代前文提到的某一行为/现象), is 是系动词。because human curiosity and ambition cannot be stopped 是 because 引导的表语从句,从句中 human curiosity and ambition 是主语, cannot be stopped 是被动语态的谓语。
04
语法点精讲
1.英语中大数字的表达核心在于 “三位一分”(从右往左,每三位加一个逗号),并且每个“逗号”都有一个特定的名称。
第一个逗号→ thousand(千)
第二个逗号→ million(百万)
第三个逗号→ billion(十亿)
一、大数字的表达与读法
语法点精讲
2.读法规则:
分节朗读:按逗号分成的节,从左到右依次读出每节的三位数,再加上该节的单位(billion,million,thousand)。
百位与十位:节内百位和十位(或个位)之间通常用and连接(英式英语更常用)。十位和个位之间用连字符“-”连接。18,357,089 读作:eighteen million, three hundred and fifty-seven thousand, and eighty-nine。
一、大数字的表达与读法
语法点精讲
hundreds/thousands/millions/
billions+ of + 复数。
Millions of bees are flying in the sky.
数百万只蜜蜂正在空中飞舞。
表示不确切的数量用:
基数词+hundred/thousand/million
/billion+复数;Do you think it is better to travel ten thousand miles than to read ten thousand books 你认为行万里路比读万卷书更好吗
3 表示确切的数量用:
一、大数字的表达与读法
二、形容词和副词的最高级的用法
核心用法:
比较级:用于两者之间的比较,表示“一方比另一方更……”。常与“than”连用。
The Yangtze River is longer than the Yellow River in China.
The Mariana Trench is deeper than any other part of the ocean.
最高级:用于三者及以上的比较,表示“最……的”(常与 “the” 连用,后接 “in/of”短语限定范围。
Mount Qomolangma is the highest mountain in the world.
The Sahara Desert is the largest desert in the world.
变化规则 例词
一般在词尾直接加-er和-est tall—taller—tallest;
light—lighter—lightest
以字母-e结尾的直接加-r或-st nice—nicer—nicest;
fine—finer—finest
以辅音字母加y 结尾的词,变y为i加-er或-est heavy—heavier—heaviest;
busy—busier—busiest
1.形容词与副词的比较级和最高级的变化规则
变化规则 例词
以重读闭音节结尾且末尾只有一个辅音字母的形容词,双写最后一个辅音字母再加-er或-est。 thin—thinner—thinnest; hot—hotter—hottest
多音节词或部分双音节词的比较级和最高级在其前面加more或most。 beautiful—more beautiful
—most beautiful
2.形容词与副词的比较级和最高级的变化规则
原级 比较级 最高级
good/well better best
ill/bad/badly worse worst
many/much more most
little less least
old older/elder oldest/eldest
far farther/further farthest/furthest
1.形容词与副词的比较级和最高级的不规则变化
2.比较级的用法
原级:(同级比较)


2.比较级句型:
1). 基础句型:比较级+ than ......比......更......
George runs faster than me. 乔治跑得比我快。
2). 变式一:“比较级+ and +比较级”,表示“越来越……”。
当形容词或副词为部分双音节词或多音节词时,用“more and more +原级”表示。
The rain is getting heavier and heavier. 雨变得越来越大。
3). 变式二: “the +比较级...,the +比较级...”,表示“越……,就越……“表示一方的程度随着另一方的变化而变化。
The harder you work, the luckier you will be. 越努力越幸运。
4). 变式三: ” A +谓语动词+倍数 比较级 than + B“,
表示“A是B的……倍……”。
Our school is three times bigger than yours. 我们学校是你们学校的三倍大。
5). 变式四: A +谓语动词+ the 比较级+ of the two...”
表示“A是两者中比较……的一个”,是特指情况。
Kate is the smarter of the two girls. 凯特是两个女孩中比较聪明的一个。
6). 疑问句: “Which/ Who... +比较级, A or B ”
Who is more careful, Bob or John 鲍勃和约翰谁更细心?
特别提醒:
1. 比较级前可以加修饰词, 如even, much, far, a little,a lot等。
My sister’s room is much tidier than mine.
我姐姐的房间比我的整洁得多。
2. 比较的对象必须一致.有时为了避免重复,可以用that 或those 代替前面出现的词,而且that 或those 不能省略。
The population of Suihua is much smaller than that of Harbin.
绥化的人口比哈尔滨的人口少得多。
3. than前后所使用的动词相同时,通常用助动词代替后面的动词或省略后面的动词。
They all think my eyes look bigger than my brother's.
他i都i为我的眼睛比我哥哥的大。
3、最高级句型:
1). 基础句型: the + 最高级 +单数 + in / of 短语,
表示“……中最……的”。
He is the youngest student in our class.
2). 变式一:one of the + 最高级+可数名词复数+ in /of 短语,表示“……中最……的……之一”。
Miss Green is one of the most popular teachers in our school.
3). 变式二: the 序数词+ 最高级+ 单数+in / of 短语,
表示“在……中是第几……的……”(从第二开始)。
As we all know, the Yellow River is the second longest river in China.
4、比较级和最高级之间的转换:
1). A+ 谓语+ 比较级+ than+ any other + 单数 + 范围。
表示“A 是……中最……的”或“A 比(其他)任何……都……”.
Shanghai is bigger than any other city in China.
上海比中国其他的任何一个城市都大。
2). A+ 谓语+ 比较级+ than + the other + 复数+ 范围。
表示“A 是……中最……的”或“A 比(其他)任何……都……”.
Shanghai is bigger than the other cities in China.
上海比中国其他的任何一个城市都大。
特别提醒:
形容词最高级前必须加定冠词the;
但是当形容词的最高级前已经有了作定语用的形物代或名词所有格时修饰时,不加the;
副词最高级前可以不加the.
语法点精讲
I.单项选择。
( )1.The building is     .
A.100 metre high B.100 metres high C.100 metres high
(  )2.—How large is that new park —It’s 300     .
A.square kilometres in size B.square kilometre in size
C.square kilometres in the size
(  )3.The Great Wall is one of     man made structures in history.
A.longest B.longer C.the longest
(  )4.The temperature here is 10℃, which is 5℃     the summer average.
A.below B.under C.in
C
A
C
A
语法点精讲
(  )5.Mount Kilimanjaro is     metres high.
A.five thousands, eight hundreds and ninety five
B.five thousand, eight hundred and ninety five
C.five thousands, eight hundred and ninety five
(  )6.The Sahara Desert is about 9 million     in size.
A.square kilometre B.square kilometres C.squares kilometre
(  )7.The Yangtze River travels the     in China.
A.farthest B.farther C.far
(  )9.We visited one of the world’s     waterfalls in Africa.
A.amazing B .more amazing C.most amazing
C
B
A
C
05
写作指导
话题分析
本单元围绕“探索自然”Exploring Nature)展开。该话题通常用于向他人描述自然景观的地理特征、动植物生态,讲述人类探索自然的经历与精神以及表达对自然环境的敬畏与保护意识的地理类或科普类的写作。
写作指导
写作指导
写一篇短文,介绍一个自然奇观(如湖泊、山脉、森林等),说明其特点、意义以及为什么值得参观。
写作要求:
1.使用本单元所学词汇和句;
2.包含该自然奇观的基本信息(名称、位置、大
小、特点等):
3.使用数字、比较级和最高级进行描述:
4.语言生动、有吸引力,能引起读者的兴趣;
5. 80~100词。
写作任务
思路点拨
列提纲
1.开头句:引入自然奇观,点明其地位或特色。
2.主体部分:
(1)位置与大小;
(2)自然环境与动植物;
(3)人类活动或探索成就。
3.结尾句:总结其价值或发出邀请。
1.文体:说明文
2.人称:第三人称
3.时态:一般过去时
审题
写作指导
句子积累
① Located in _______,_______is one of the most amazing natural
wonders in the world.
② Have you ever heard of _____ It is known as_________.
① It covers an area of_______square kilometres.
② Here you can find/see_______.People are attracted by__________.
③ Many people come/explore here to________.
① If you love nature, ________is a place you must visit.
② _____is truly a wonder of nature that we should protect.
③ Come and explore ________ for yourself!
开头句:
中间句:
结尾句:
写作指导
范文赏析
The Deepest Lake in the World
Lake Baikal is one of the most famous natural wonders in the world.It is located in Siberis,Russia, and is the deepest freshwater lake on earth. People are attracted by its clear water and unique environment.
There are three reasons why Lake Baikal is so special.First,it is very deep - up to 1,620 metres. It is not easy to reach the bottom, but many curious travellers still try.Second, the lake is home to over 1, 200 types of animals.Some of them cannot be found anywhere else in the world.Finally, it is also a symbol of natural beauty and peace. Many people believe that vising Lake Baikal can bring them closer to nature.
In fact, Lake Buikal reminds us that nature is full of wonders We shoauld protect it so that future generations can also enjoy its beauty.
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