人教版八年级下册 Unit 7 What's the highest mountain in the world?单元复习课件 (共63张PPT)

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名称 人教版八年级下册 Unit 7 What's the highest mountain in the world?单元复习课件 (共63张PPT)
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更新时间 2022-08-24 19:39:38

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(共63张PPT)
Unit 7 What's the highest mountain in the world
单元知识盘点
常用短语
feel free (可以)随便(做某事) take in 吸入;吞入(体内)
in the face of 面对(问题、困难等)
as…as… 和……一样…… talk about…谈论……
give up doing sth. 放弃做某事
try to do sth. 尽力做某事
achieve one’s dream 实现某人的梦想
even though 即使;虽然 at birth 出生时
up to 到达(某数量、程度等);至多有;不多于
walk into 走路时撞着
fall over 绊倒 or so 大约
die from 死于 cut down 砍倒
do research 做研究
start to do sth. 开始做某事
经典句型
1. What is the highest mountain in the world
世界上最高的山是什么山?
2. Did you know that China is one of the oldest countries in the world
你知道中国是世界上最古老的国家之一吗?
3. It’s much older than my country. 它比我的国家古老得多。
4. The main reason was to protect their part of the country.
主要原因是为了保护他们那部分的国土。
5. As far as I know, there are no other man-made objects as big as this.据我所知,再没有其他像它这样大的人造物体了。
6. One of the main reasons is that people want to challenge themselves in the face of difficulties.
主要原因之一是人们想在困难面前挑战自己。
7. Scientists say there are now fewer than 2,000 pandas living in the forests.科学家们说,如今生活在森林里的大熊猫不足2000只。
8. Another 300 or so live in zoos or research centers in China and other countries.
另外300只左右生活在中国和其他国家的动物园或研究中心。
9. Adult pandas spend more than 12 hours a day eating about 10 kilos of bamboo.成年大熊猫每天要花12个多小时吃大约10公斤竹子。
10. We all hope that in the future there will be a lot more pandas. 我们都希望将来会有更多的大熊猫。
语法点睛
形容词、副词的比较级和最高级:①比较级和最高级的构成 ②比较级的用法和句式 ③最高级的用法和句式 ④原级的用法和句式 ⑤使用比较级和最高级时的注意事项
课文再现
根据Section B 2b的文章内容,在横线上填入所缺的单词,使缩写后的文章内容完整、连贯。每空一词。
Many people around the world love pandas and they are a 1._______ of China. But now pandas need help.
Nowadays, there are 2. _______than 2,000 pandas living in the forests. There are some different reasons. First, pandas do not have
symbol
fewer
many 3. _______, maybe only one every two years. 4. _______, the babies often die from 5. _______and do not live very long. Third, humans cut down so many forests that pandas cannot find enough to 6. _______.
The Chinese government is trying hard to help 7. _______the pandas. Scientists are doing research to better understand the
8. _______ of pandas. We all hope that there will be a lot more pandas in the future.
babies
Second
illnesses
eat
save
habits
单元专题聚焦
巧品语法 
语法精讲
命题情报
形容词、副词的比较级和最高级是我们在初中阶段会学到的一个重要语法点,在中考命题中颇受命题者的青睐。与之相关的考点有比较级和最高级的构成以及对应的用法和句式等。和比较级、最高级相关的考题通常以单项选择的形式出现,也可以以翻译句子的形式出现。
形容词、副词的比较级和最高级
概念 大多数形容词(性质形容词)和副词有级别变化,即原级、比较级和最高级,用来表示事物的等级差别。
比较级和最高级有规则变化和不规则变化两种。
1. 规则变化有如下变化规律:
1 比较级和最高级的构成
单音节词和少数双音节词 一般情况下,在原级词尾加-er构成比较级,加-est构成最高级。如:high→higher→highest。
重读闭音节,末尾只有“一个元音字母+一个辅音字母”的词,先双写该辅音字母再加-er或-est。如:big→bigger→biggest。
单音节词 和少数双 音节词 重读闭音节,末尾只有“一个元音字母+一个辅音字母”的词,先双写该辅音字母再加-er或-est。如:big→bigger→biggest。
以“ 辅 音 字 母 + y ”结 尾 的 词,先变y为i,再加- er或- est。如:happy→happier→happiest。
大部分双音节词和所有多音节词 在原级前加more构成比较级,加most构成最高级。如:dangerous→more dangerous→most dangerous。
2. 不规则变化
有一些词的比较级、最高级变化是不规则的,需要特殊记忆。
good/well→better→best
bad/ill→worse→worst
many/much→more→most
little→less→least
far→farther/further→farthest/furthest
old→older/elder→oldest/eldest
2 比较级的用法和句式
1. 两者比较时用比较级,其结构为“...比较级+than...”。
His hair is longer than mine.
他的头发比我的长。
She can speak English better than me.
她英语说得比我好。
2. 在两者之间选择“哪一个更……”时,用句型“Which/Who is+比较级, ...or... ”
Which sweater is cheaper, the red one or the yellow one
哪件毛衣更便宜,红色的还是黄色的?
3. 表示“两者之间更……的一个”时,用“the+比较级”。
Lucy is the taller of the twins.
露西是这对双胞胎中个子更高的那个。
4. 表示“越……,越……”时,用“the+比较级,the+比较级”。
The more you eat, the fatter you will become.
你吃得越多,就会越胖。
5. 表示“越来越……”时,用“比较级+and+比较级”,多音节词和部分双音节词用“more and more+形容词或副词的原级”。
The weather is getting warmer and warmer.
天气变得越来越暖和。
We should make our country more and more beautiful.
我们应该使我们的国家越来越漂亮。
6. 比较级可以用much, a little, far, a bit, a lot, even, still, rather等修饰。
It’s much colder today than yesterday.
今天比昨天冷得多。
3 最高级的用法和句式
1. 三者或三者以上的人或物进行比较时,用最高级形式。形容词最高级前通常需加定冠词the,句末常接in/of短语来表示范围。
He is the strongest of all the boys.
他是所有男孩中最强壮的一个。
2. 表示“最……的……之一”时,用“one of+the+形容词最高级+可数名词的复数”。
The computer is one of the most helpful inventions.
电脑是最有用的发明之一。
3. 表示“第几最……”时,用“the+序数词+形容词最高级+可数名词的单数形式”。
The Yellow River is the second longest river in China.
黄河是中国第二长河。
4 原级的用法和句式
1. 表示“和……一样……”时,用“as+形容词或副词的原级+as”。
He is as tall as his sister.
他和他姐姐一样高。
Lily works as hard as me.
莉莉工作和我一样努力。
2. 表示“不如……;比不上……”时,用“not as/so+形容词或副词的原级+as”。
She is not as/so pretty as her sister.
她不如她妹妹漂亮。
5 使用比较级和最高级时的注意事项
1. 最高级后面往往用of或in构成的介词短语来表示最高级的比较范围。of短语所指的范围通常是一群人或 一些事物,而不是一个场所;如果指一个场所,则用介词in。
He is the strongest of the three.
他是三个人中身体最强壮的。
He is the strongest in our class.
他是我们班里身体最强壮的。
2. 当比较双方只出现一方(没有than及其后面的部分),且句中含有of the two时,比较级前要加the。
He is the taller of the two boys.
他是两个男孩中较高的一个。
3. 为避免重复,我们通常用that, those, one, ones代替前面出现过的名词。that代替可数名词单数和不可数名词;those代替可数名词复数;one既可指人又可指物,只能代替可数名词单数;ones代替可数名词复数。
◆在冬天,北京的天气比上海更冷。
【误】In winter, the weather of Beijing is colder than Shanghai.
【正】In winter, the weather of Beijing is colder than that of Shanghai.
4. 为了避免重复,比较级中同样的动词用助动词do, does, did替代。
I spend less time doing homework than John does.
我做家庭作业花的时间比约翰少。
Ⅰ. 单项选择
1. |德阳中考| —Is French easy to learn
—No, I think it’s _______ than English.
A. more difficult B. most difficult
C. difficult D. much difficult
A
考点直击
2. |黄冈中考| —How hard you are working, Helen!
—We must! President Xi said that _____we are, ______we will be.
A. the more hard-working; the luckier
B. the hard-working; the lucky
C. more hard-working; luckier
D. the most hard-working; the luckiest
A
【解析】考查形容词比较级的特殊形式“the +比较级,the +比较级”。句意:“海伦,你现在学习好努力!”“我们必须(努力学习),习主席说我们越努力,就会越幸运。”故选A。
3. |岳阳中考| Everyone knows that China is getting ______.
A. strong and strong
B. strongest and strongest
C. stronger and stronger
C
【解析】 考查形容词比较等级。句意:人们都知道中国变得越来越强大。“比较级+比较级”意为“越来越……”,为固定句型,故选C。
4. |湘潭中考| —Mom, I’d like a cup of coffee.
—Dear, why not drink some water It’s ______than coffee.
healthy B. healthier
C. the healthiest
B
5. |眉山中考| —Mom, could you buy _____me a dress like this, please
—Of course. We can buy one than this, but it______.
A. a better; better than
B. a worse; as good as
C. a cheaper; as good as
D. a more important; not as good as
C
6. |黔南中考| _____you practice, ______you will be at math.
The more; the better
B. The more; the best
C. The most; the better
D. The most; the best
A
|天水中考| Can you do the work well with _____time and _____
people
A. less; few B. few; little
C. less; fewer D. fewer; less
C
【解析】 考查形容词的用法辨析。句意:你能用________时间和________人把这项工作做好吗?less为little的比较级,意为“更少的”,二者修饰不可数名词;fewer是few的比较级,意为“更少的”,二者修饰可数名词复数。根据“do the work well”可知是用更少的时间和更少的人来完成工作。故选C。
8. |重庆A中考| Nobody worked the math problem out. It was _____ one of all.
A. easier B. the easiest
C. more difficult D. the most difficult
D
9. |宿迁中考| LeBron James is one of _____ players in the NBA. He is my hero.
A. better B. the best
C. worse D. the worst
B
10. |湛江中考| —Who is _____ , Tom, Jim and David
—I think Jim is.
A. stronger B. the stronger
C. strongest D. the strongest
D
Ⅱ. 翻译下列句子
我的房间比你的大得多。
______________________________________________________
2. 春天,天气变得越来越暖和。
______________________________________________________
3. 你越细心,犯的错误就会越少。
______________________________________________________
My room is much bigger/larger than yours.
It/The weather gets warmer and warmer in spring.
The more careful you are, the fewer mistakes you will make.
4. 登山是最危险的运动之一。
______________________________________________________
5. 英语和数学一样重要。
______________________________________________________
Mountain climbing is one of the most dangerous sports.
English is as important as math.
如何写以“保护濒危动物”为话题的文章
“如何保护濒危动物”是中考常考的话题之一。写此类作文时,常常需要首先介绍一下濒危动物的基本情况,然后描述这些动物濒危的原因,最后提出保护的建议或倡议。
妙解写作       
写 作 案 例
假设你是林丽,请以“Saving Siberian Tigers”为题,根据以下提示,为某报社写一份80词左右的关于保护东北虎的倡议书。
内容提示:
1. 东北虎强壮、漂亮,是人们在动物园最喜欢观看的动物之一。
2. 现在世界上仅存500只左右的东北虎,它们的数量越来越少。
3. 东北虎处境危险的原因:人们砍伐森林,东北虎没有栖息地。
4.  保护东北虎的建议:建更多的自然保护区(nature reserves);严禁捕杀东北虎。
素 材 积 累
词汇库
①protect 保护 ②birth 出生
③endangered 濒危的 ④protection 保护
⑤illness 疾病 ⑥research 研究
⑦save 挽救 ⑧danger 危险
⑨action 行动 ⑩measure 措施
短语箱
①in danger 处于危险中 ②at birth 出生时
③save one’s life 挽救某人的生命 ④look for 寻找
⑤try to do sth.尽力做某事
⑥try one’s best to do sth. 尽某人最大努力做某事
⑦take action 采取行动 ⑧take measures 采取措施
⑨do research 做研究 ⑩research centers 研究中心
句式链
①We should protect these animals. 我们应该保护这些动物。
②Do you have any questions about baby pandas
关于熊猫宝宝你有什么问题吗?
③The baby pandas are smaller than adult pandas.
熊猫宝宝比成年熊猫小。
④When they’re born, they only weigh about 0.1 to 0.2 kilos.
当它们出生的时候,它们只重0.1到0.2千克。
⑤At birth, it’s only around 15 cm long.
它出生时大约只有15厘米长。
⑥Now they are endangered. 现在它们濒临灭绝。
⑦We must take action to save them. 我们必须采取行动挽救它们。
⑧The government is trying hard to help save them.
政府正尽力帮助挽救它们。
五 步 妙 解

体裁 应用文 话题 写一份关于保护
东北虎的倡议书
时态 一般现在时 人称 第三人称为主
段落 布局 开头:介绍东北虎的概况。 正文:描述东北虎濒临灭绝的原因。 结尾:提出建议,并发出保护东北虎的倡议。 谴
(1)汉译英:
①我们应该建立更多的自然保护区。_____________________________________________________
②我们做那件事是为了保护它们。
_____________________________________________________
We do that to protect them.
We should build more nature reserves.
(2)借助于in order to将以上两个简单句合并成一句:______________________________________________________
In order to protect them, we should build more nature reserves.

介绍东北虎
的概况
描述东北
虎濒临灭
绝的原因
The Siberian tiger is one of the most popular animals that people like to see in the zoo.
Many forests are cut down and they have no places to live in.
We must make laws to stop people from hunting them.
提出建议并
发出倡议
Let’s try our best to save them.
We should build more nature reserves.
There are only 500 Siberian tigers or so in the world.
Saving Siberian Tigers
Dear Sir/Madam,
Do you know the beautiful Siberian tigers Have you seen them in the zoo I think the Siberian tiger is one of the most popular animals that people like to see in the zoo. The reason is that they are strong and beautiful. But nowadays there are only 500 Siberian tigers or so in the world, and the number of them is decreasing. Why

Because many forests are cut down and they have no places to live in. In order to protect them, we should build more nature reserves. Besides, we must make laws to stop people from hunting them.
Let’s try our best to save the strong and beautiful Siberian tigers.
Yours,
Lin Li

该篇作文格式正确,条理清晰,层次分明,句式丰富,行文流畅,是一篇标准的满分作文,值得大家背诵和学习。
1.  本文是应用文,属于应用文中的倡议书。开头以“Dear Sir/Madam”为称呼语,符合倡议书的写作格式。
2.  正文部分分为两段,第一段介绍了东北虎的概况,并描述了它们濒临灭绝的原因,提出了关于保护东北虎的建议。第二段呼吁大家保护东北虎。正文部分条理清晰,层次分明。
3.  作者在写作的时候使用了许多含金量较高的词汇,如decrease, in order to, nature reserves, make laws, stop sb. from doing sth.等,这些词汇的灵活使用体现了作者良好的英语功底。
小 试 身 手
本周末有一批外国游客要来动物园参观大熊猫,假如你是他们的导游,请你根据下面的要点提示写一篇发言稿,向这些游客简要地介绍一下大熊猫,要求不少于80词。开头已给出,不计入总词数。
要点提示:
1. 大熊猫的外貌及性格特点是什么?
2. 大熊猫以什么为食?它们主要生活在哪些地区?
3. 大熊猫的生存现状如何?中国政府为保护大熊猫采取了哪些措施?
Ladies and gentlemen,
Welcome to China! I’m glad to be your guide today. We will see lovely pandas soon. Now let me tell you something about pandas.
____________________________________________________________________________________________________________________
One possible version:
Ladies and gentlemen,
Welcome to China! I'm glad to be your guide today.
We will see lovely pandas soon. Now let me tell you something about pandas. Pandas are black and white. They are very cute and friendly to people. They feed on bamboo. They mainly live in some forests and mountains in Sichuan Province, Gansu Province and Shaanxi Province. Now pandas are becoming fewer and fewer. So the Chinese government is thinking about ways to protect them. People build many research bases to care for baby pandas. Some education programs also send people to schools to tell children about the importance of saving pandas. Besides these, the government is also planting more bamboo so there will be more forests to live in and more food to eat for pandas.
快速阅读技巧之“查读”
“Scanning”的含义是查读,又称“寻读”。它同略读(skimming)一样也是一种快速阅读的技巧。擅长阅读理解的学生总是善于运用“查读”的技巧来捕捉文章中的具体信息,以提高阅读效率。
培优课堂      
查读是一种从大量的资料中查找某一项具体事实或某一项特定信息——如人物、事件、时间、地点、数字等,而对其他无关部分则略去不读的快速阅读方法。运用这种方法,读者就能在最短的时间内掠过尽可能多的内容,定位到所需要的信息。
【典例】
Most animals on land are known to us, but many underwater living things are not. Now let’s get to know some of them.
Sea Cucumber(海参) Sea cucumbers are strange animals living at the bottom of the sea. They wear brown or pale green coats with many sticks up. When summer comes, they stay deep to sleep because they are afraid of heat. And when it is autumn, they move to shallow(浅的) water and get their food.
Cuttlefish(乌贼) A cuttlefish can swim quite fast, so it is also called“rocket(火箭) fish”. It has eight arms and two feelers on its head, just around its mouth. It ejects ink(喷墨) when it is in danger. Its meat is delicious, and it is often the first choice for many people.
Octopus(章鱼) An octopus has long arms, with which to catch food and protect itself. When it is sleeping, one or two of its arms are still on duty, keeping moving. Once it feels something dangerous, it can wake up at once to take action.
【题目】
1. Sea cucumbers stay deep to sleep in summer because they    .
A. are afraid of high temperature B. want to get strong and fat
C. are afraid of their enemy D. want to live alone
2. The    of an octopus can help protect it when in danger.
A. color B. arms
C. sound D. smells
A
B
【解析】 上述两道题都可以利用“查读”或“寻读”的技巧来解答。
1. 由“Sea Cucumber(海参)”描述中的“When summer comes, they stay deep to sleep because they are afraid of heat.”可知答案为A。
2. 由“Octopus(章鱼)”描述中的“An octopus has long arms, with which to catch food and protect itself.”可知答案为B。
【实战演练】 见单元分层训练七Ⅴ的第3题和第4题
谢 谢 观 看!