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(共41张PPT)
Unit 5 Amazing nature
核心知识梳理总结
外研版（2024）七年级下册
Content
单元单词梳理
01
单元词形变换
02
单元短语梳理
03
单元句型梳理
04
目录
单元语法讲解
05
话题写作讲解
04
单元单词梳理
词汇 音标 词性 词义
plateau / pl t / n. 高原
cloud /kla d/ n. 云
soft /s ft/ adj. 柔软的
brightly / bra tli/ adv. 明亮地
lotus / l t s/ n. 莲花（图案），荷花（图案）
sky /ska / n. 天，天空
calm /kɑ:m/ adj. 镇静的，沉着的；心平气和的
above / b v/ prep. 在（……）上方
express / k spres/ v. 表达；表现
grassland / ɡrɑ:sl nd/ n. 草原
field /fi:ld/ n. 田地，田野
few /fju:/ adj. 很少，不多
present / preznt/ n. 礼物，赠品
proud /pra d/ adj. 自豪的，得意的
likely / la kli/ adj. 可能的；可能发生的；可能属实的
local / l kl/ adj. 地方性的，当（本）地的
designer /d za n (r)/ n. （服装、家具、设备等的）设计师，设计者
guide /ɡa d/ n. 指南，指导手册
describe /d skra b/ v. 描述，描写
landscape / l ndske p/ n. （陆上的）风景，景致，景色
common / k m n/ adj. 常见的，普遍的
mount /ma nt/ n. （缩写为 Mt）…… 山，…… 峰
tide /ta d/ n. 海潮，潮汐
exhibition / eks b n/ n. 展览（会）
tour /t (r)/ n. 参观，游览
lung /l / n. 肺
scientist / sa nt st/ n. 科学家
behaviour /b he vj (r)/ n. 行为，举止
land /l nd/ n. 陆地
aloud / la d/ adv. 出声地，大声地
salty / s :lti/ adj. 咸的，含盐的
lie /la / v. 躺，平卧
surface / s :f s/ n. 表面，面
level / levl/ n. 水平高度；相对高度
less /les/ det. 不那么多，（较）更少
suggest /s d est/ v. 暗示，暗指
such as 例如，诸如
snake /sne k/ n. 蛇
wood /w d/ n. 木头；木材，木料
disappear / d s p (r)/ v. 消失，不见
glacier / ɡl si (r)/ n. 冰川
national / n n l/ adj. 国家的，全国性的
cloud n. 云 → cloudy adj. 多云的；阴天的 → cloudless adj. 无云的；晴朗的
soft adj. 柔软的；柔和的→ softly adv. 柔软地 → softness n. 柔软；柔和
brightly adv. 明亮地→ bright adj. 明亮的 → brightness n. 明亮；亮度
lotus n. 莲花（图案），荷花（图案） → lotuses（复数形式）
calm adj. 镇静的，沉着的；心平气和的 → calmly adv. 平静地；冷静地
→ calmness n. 平静；冷静；沉着
express v. 表达；表现 → expression n. 表达；表情
field n. 田地，田野 → fieldwork n. 野外工作；实地考察
单元词形变换
present n. 礼物，赠品→ presence n. 存在；出席 → presentation n. 展示；介绍；赠送；陈述
proud adj. 自豪的；骄傲的 → proudly adv. 自豪地；骄傲地 → pride n. 自豪；骄傲 → proudness n. 骄傲；自豪
likely adj. 可能的；可能发生的 → unlikely adj. 不太可能的；不可能的
local adj. 地方性的，当（本）地的→ locally adv. 当地；在本地
designer n. 设计师，设计者→ design v. 设计；构思
guide n. 指南，指导手册 → guidance n. 指导；引导；领导 → guider n. 引导者；向导；指导者
describe v. 描述，描写 → description n. 描述；描写
common adj. 常见的，普遍的 → commonly adv. 通常；一般地；普遍地
→uncommon adj. 不常见的；罕见的；非凡的
tide n. 海潮，潮汐 → tidal adj. 潮汐的；受潮汐影响的
exhibition n. 展览（会）；展示 → exhibit v. 展览；展出；展示
→ exhibitor n. 参展商；展出者；展览者
tour n. 参观，游览→ tourist n. 游客；旅行者 → tourism n. 旅游业；旅游
scientist n. 科学家 → science n. 科学；自然科学 → scientific adj. 科学的
behaviour n. 行为，举止 → behave v. 表现
aloud adv. 出声地，大声地→ loud adj. 大声的；喧闹的 → loudly adv. 大声地；喧闹地
salty adj. 咸的，含盐的→ salt n. 盐，食盐→ saltiness n. 咸味；含盐量
lie v. 躺，平卧 → lying v. 躺；位于；说谎的现在分词形式
→ lier n. 说谎者 → lain v. 躺；位于的过去分词形式
less det. 不那么多，（较）更少→ lesser（比较级）→ least（最高级）
suggest v. 暗示，暗指；建议；提议→ suggestion n. 建议；暗示
wood n. 木头；木材→ wooden adj. 木制的
disappear v. 消失，不见→ disappearancen. 消失；失踪；不见
national adj. 国家的，全国性的→ nation n. 国家；民族→ nationality n. 国籍
一、根据句意及提示写单词。
1．Don’t forgot to invite your friends at primary school to join your bicycle t_________.
2．He wants to be a s_________because he wants to find out the secret of the unknown world.
3．These years the l_______of the sea has risen a little because of the greenhouse effect.
4．The s________ of the earth used to be covered by water billions of years ago.
5．The silk scarf feels s________ and smooth.
词汇练习
our　
cientist　
evel　
urface
oft　
6．My parents gave me some books as my birthday_______________(礼物).
7．—What can you see on the__________ (草原)
—Many sheep and cows.
8．If you get lost during the trip, you can ask the ________(当地的) people for help.
9．When you travel, a __________ (指南) can help you a lot.
10．Look! The bird is flying _________(在……上方) the trees.
11．Lei Feng is regarded as a model of good ___________________ /b he vj /.
12．Farmers grow rice in the _________[fi ld] every spring.
词汇练习
presents/gifts　
grassland　
local　
guide　
above　
behaviour/behavior
field
二、根据句意或用括号内所给词的适当形式填空。
1．There will be a Chinese painting __________ (exhibit) in this museum next week.
2．Disneyland is such an ___________ (amaze) amusement park.
3．We can find out the ________ (open) hours of the museum on the Internet easily.
4．You can look through the ___________ (introduce) to our company on the home page.
5．He got a good education and became a famous engineer when he _________ (grow) up.
词汇练习
exhibition　
amazing　
opening　
introduction　
grew　
6．It’s difficult to walk on some roads in the _________ (rain) season here.
7．In Eminem Park, you can enjoy the natural beauty, or simply__________ (breath) the fresh air.
8．I saw him _________ (lie) on the sofa when I came into the room.
词汇练习
rainy　
breathe　
lying　
单元短语梳理
1.natural wonder 自然奇观
2.be famous for... 因......著名
3.be full of... 充满......
4.like white sheep 像白色的绵羊一样
5.give sb a calm feeling 给某人平静的感觉
6.express love for... 表达对......的爱意
7.the colour of nature 大自然的颜色
8.run through 跑过
9.in one's heart 在某人心中
10.one of the most beautiful places 最漂亮的地方之一
11.learn about 了解,知道
12.the Natural History Museum 自然历史博物馆
13.all over the world 世界各地
14.free guided tours 免费提供导游的游览
15.opening hours 开放时间
16.introduction to... 关于......的介绍
17.in the dry season 在旱季
18.in the rainy season 在雨季
19.go back 回去
20.research on... 关于......的研究
21.on one's surface 在......的表面
22.many kinds of 许多种类的
23.cut down 砍倒
24.turn into 变成
25. water level 水位
26. climate change 气候变化
27. lie on 躺在；位于（文中指漂浮在）
28. go down 下降
29. dry up 干涸
30. in fact 事实上
31. year by year 逐年
32. such as 例如
一、完成句子（每空一词）。
1．我们住在同一栋楼里，但我的公寓在她的楼上三层。
We live in the same building but my flat is ________ _______ ______ hers.
2．这深邃的大海给我一种平静的感觉。
The deep sea ______ ____ ____ ________ _______.
3．我们学校的学生总数正在逐年增长。
The total number of students in our school is growing ______ ____ ______.
4．河流通常流入更大的河流或海洋。
Rivers generally ______ ______ a larger river or the sea.
短语句子练习
three floors above
gives me a calm feeling
year by year
flow into
5．我有很多爱好，例如唱歌、跳舞和游泳。
I have many hobbies, ______ _____singing, dancing and swimming.
6．我很自豪当一名团员。
I feel ______ ___ ____a League member.
7．在周末，图书馆里总是挤满了年轻的读者。
At weekends, libraries _____ always _____ ____ young readers.
8．法国以美食和酒而闻名。
France____ _________ ____its fine food and wine.
短语练习
such as
proud to be
are full of
is famous for
1.It is famous for the world's highest mountain.
它因拥有世界上最高的山而闻名。
2.But this area is also full of the most amazing colours in nature.
但是这个地区充满了自然界最令人惊奇的颜色。
3.The mountains shine brightly under the sun, like white lotus flowers.
群山在阳光下闪闪发光，像白色的莲花。
4.Words can't express my love for the rivers and lakes.
言语无法表达我对河流和湖泊的爱。
单元句型梳理
5.In my heart, it' s better than any other place.
在我心中,它比其他任何地方都好。
6.It's still one of the most famous rivers in China.
它仍然是中国最著名的河流之一。
7.Take less water, or I'll dry up within the next 100 years.
少抽些水吧,不然用不了一百年我就干涸了。
8.As my name suggests, I make rain for my plants and animals, such as monkeys, snakes and many kinds of flowers.
正如我的名字所暗示的那样，我为许多动植物提供雨水，比如猴子、蛇和各种各样的花。
9.However, people are cutting down my trees for wood and to make space for farming.
然而，人们正在砍伐我的树木，为农耕腾出空间。
10.Then my home is the best choice.
那么我家是最好的选择。
11.I'm not a sea but a lake. And I'm not dead.
我不是大海而是一个湖泊。并且我还没有干涸（死去）。
12. My water level is going down. I am becoming smaller year by year.
我的水位正在下降。我一年比一年变小。
13.The colour white meets your eyes all around. The clouds are clean and soft, like our white sheep.白色随处可见。云朵洁白柔软，就像我们的白羊。
1、比较级和最高级的定义
比较级用于描述两者在某个方面相比，一个比另一个 “更加......”；最高级用于三个及以上个体当中，哪个个体在某方面“最......”。
2、形容词、副词的级。
形容词、副词有原级，比较级，最高级之分，不进行比较时用原级，两者比较用比较级，三者及三者以上用最高级。
形容词、副词的比较级和最高级
单元语法讲解
3. 形容词、副词比较级和最高级的构成
构成方式 例词
规则变化 单音节和部分双音节词 一般在词尾加-er，-est small→smaller→smallest
loud→louder→loudest
以不发音的字母e结尾的词，加-r，-st large→larger→largest
以两个辅音字母加一个元音字母结尾的重读闭音节词，双写词尾的辅音字母，再加-er，-est big→bigger→biggest
early→earlierr→earliest
以＂辅音字母+y＂结尾的词，变y为i，再加-er，-est ugly→uglier→ugliest
busy→busier→busiest
少数以er或ow结尾的双音节词，词尾加-er，-est narrow→narrower→narrowest
多音节 其他双音节词和多音节词及分词形容词，在词前加more，most important→more important→most important quickly →more quickly →most quickly
不规则变化的情况（常见的如下）
bad/ill/badly→worse→worst；much/many→more→most；
good/well→better→best；far→farther/further→farthest/furthest；old→older/elder→oldest /eldest；little→less→least
【注意】
1. farther/farthest和further/furthest的区别：二者表示距离时，往往可互换，但是用于引申义，表示程度时，只能使用后者。
eg：He can throw much farther/further than you. 他可以比你扔得远得多。
4. 两个事物进行比较的基本结构：
“A + 谓语动词 + 比较级 + than + B”，表示 “A 比 B 更……”。
eg：My sister is taller than me.我姐姐比我高。
He runs faster than his brother.他跑得比他哥哥快。
比较级前可以用：far（远）, even（甚至）, much（许多）, still（更，还）, a lot（许多）, a little / bit（一点）, rather（相当地）, slightly（略微）, three times（三倍）等修饰，用来加强比较的程度，表示 “…… 得多”“甚至更……” 等。
eg：This book is much more interesting than that one.这本书比那本书有趣得多。
It's even colder today than yesterday.今天甚至比昨天更冷。
【拓展】比较级的其他句型：
①比较级+and+比较级 “越来越……”
eg：The weather is getting colder and colder. 天气越来越冷。
②the+比较级, the+比较级 “越……，就越……”
eg：The more you practice，the better you get. 你练习得越多，就变得越好。
The harder you work, the better your grades will be.你学习越努力，成绩就会越好。
5. 三个及以上事物进行比较的基本结构：
A + 谓语动词 + the + 最高级 + 比较范围 A 在…… 中是最…… 的
比较范围由 of 或 in 来表示，of 后接同类事物的复数名词或代词，in 后接比较的范围或场所。
eg：Tom is the tallest of all the boys.汤姆是所有男孩中最高的。
This is the most expensive dress in the shop.这是商店里最贵的裙子。
【拓展】最高级的其他句型：
可用“one of the+最高级+名词复数”表示“最……之一”，
eg： Mount Everest is one of the highest mountains in the world. 珠穆朗玛峰是世界上最高的山之一。
一、用括号内所给词的适当形式填空。
1. In summer it's_________ (hot) in Wuhan than in Beijing.
2. Which is _________________ (difficult),physics or biology
3.This part is of the_________ (little) importance of all.
4.It's becoming__________________ (hard) to find a job in China.
5.Tom is______________ (young) child in his family. His parents love him best.
语法练习
hotter　
more difficult　
least　
harder and harder　
the youngest　
二、单项选择
1．Exercising on the playground is as ________ as studying in the classroom.
A．important B．more important C．the most important
2．Of all the rivers in China, the Changjiang River is ________
A．long B．longer C．the longest
3．— I’m getting a COVID-19 vaccine (接种新冠疫苗) this afternoon.
—Everyone should take a vaccine, or we will be in even ________ danger.
A．greatest B．greater C．smaller D．smallest
语法练习
A
C
B
4．— How do you find the chat show on CCTV, Lucy
— Wonderful! It’s the ________ program I’ve ever watched.
A．better B．best C．worse D．worst
9．Putting out forest fire is regarded as one of ___________ problems in the world today.
A．difficult B．more difficult C．most difficult D．the most difficult
12．—Who is better at speaking, Jenny or Spencer
—Jenny, I think. But she does ________ in writing.
A．a bit bad B．a little worse C．much better D．a bit good
语法练习
B
D
B
13．Credit cards (信用卡) is used ________ than before. We usually pay with smart phones now.
A．little B．fewer C．less D．more
18．Although I read the novel last year, I decide to read it again __________ to get a better understanding.
A．less carefully B．more carefully
C．the least carefully D．the most carefully
语法练习
C
B
黄河是中华民族的母亲河，保护黄河是每个中国人的义务。你校英文报拟发布关于保护黄河的倡议书。请你根据以下思维导图用英文介绍一下黄河并倡导大家共护母亲河。
话题写作讲解
要求：
1.须包含上述要点，可适当发挥；
2. 语句通顺，意思连贯，语法正确，书写规范；
3. 词数70~90。
Protect the Yellow River
Dear schoolmates,
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
1. 体裁： 倡议书；
2. 人称： 以第一人称和第二人称为主；
3. 时态： 以一般现在时为主。
4. 写作内容：文章开篇点明黄河是中国的“母亲河”，介绍了其长度、在我国河流中的排名以及流经的省份数量，让读者对黄河有一个基本的了解。然后阐述黄河现状：指出黄河目前存在的问题，强调保护黄河的重要性。针对黄河面临的问题，提出了具体的保护措施。最后发出呼吁：最后呼吁大家共同努力，保护黄河。
写作思路点拨
第一段：点题，总体上介绍黄河。
第二，三段：阐述黄河存在的问题，提出了具体的保护措施。
主题：保护黄河
第三段：总结升华，呼吁大家努力保护黄河
The Yellow River is known as....It is the second longest river....
However, the Yellow River is in a poor situation...So it’s important for us to protect it.Firstly, ... Secondly, ...Thirdly, ...And we should....
Let’s work together and protect our beautiful “mother river”!
文章结构
Protect the Yellow River
Dear schoolmates,
The Yellow River is known as Chinese people’s “mother river”. It’s about 5, 464 kilometers long. It is the second longest river in our country and runs through nine provinces.
However, the Yellow River is in a poor situation. The water and soil loss is very serious. And the water is badly polluted. Also, water shortages are even more worrying. So it’s important for us to protect it.
Firstly, we should stop fishing. Secondly, our government must make laws to protect our mother river. Thirdly, we should plant more trees on both sides of the river. And we should pick up rubbish along the river to keep it clean.
Let’s work together and protect our beautiful “mother river”!
【范文赏读】
谢谢
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