人教版（2024）八年级上册英语Unit4 Amazing Plants and Animals单元复习课件(共44张PPT)

(共44张PPT)
Unit4 Amazing
Plants and animals
单元复习课件
目录
单词讲解
01
短语归纳
02
句型积累
03
知识精讲
04
单元写作
05
当堂检测
06
单词讲解 words
PART 01
单词讲解
1. amazing (adj. 令人惊叹的)→ ______________ (v. 使惊奇) →______________ (n. 惊奇)
2. ______________(v. 比较)→ comparison (n. 比较)
3. connection (n. 联系)→ ______________(v. 连接) /______________ (adj. 相关的)
4. folding (adj. 折叠式的)→ ______________ (v. 折叠)
搭配：folding fan 折扇；folding chair 折叠椅
搭配：compare A with B 比较 A 和 B；in comparison 相比之下
搭配：be connected with 与… 有关联；close connection 密切联系
compare
amaze
amazement
connect
connected
fold
单词讲解
5. bamboo (n.竹子)→ 复数bamboos（强调数量）注：多数情况下用 bamboo（不可数或单数）
6. weigh (v. 称重)→_____________ (n.重量)/weightless (adj. 失重的)
7. disappointed（adj.失望的,修饰人）→_____________（adj.令人失望的,修饰事）
8. communicate (v.交流)→ _____________ (n.交流)
搭配：communicate with sb. 与某人交流
搭配：weigh up to 200 tons（重达200吨）；lose weight（减重）
搭配：bamboo forest 竹林；bamboo shoots 竹笋
weight
disappointing
communication
单词讲解
9. importance (n.重要性)→_____________ (adj.重要的)
搭配：the importance of sth.…的重要性
10. protect (v. 保护)→ _____________(n. 保护)
搭配：protect sb./sth. from…保护…免受…；protect wildlife保护野生动物
important
protection
短语归纳 Phrases
PART 02
短语归纳
谈 论___________________________
散 步___________________________
折 扇___________________________
实际上__________________________
例 如___________________________
为 了___________________________
考 虑___________________________
因 为___________________________
散 步___________________________
...... 的象征 ___________________________
成千上万的___________________________
直到；达到___________________________
努 力 工作___________________________
合 作___________________________
与…… 交流___________________________
…... 的数量___________________________
活到；达到___________________________
出于这个原因___________________________
talk about
take a walk
folding fan.
in fact
for example=such as
in order to
think about
because of
take a walk
a symbol of
thousands of
up to
work hard
work together
communicate with
the number of
live up to
for this reason
短语归纳
19．随意做某事___________________________
例句：Feel free to ask me any questions.
20．是…的栖息地 ___________________________
例句：Large trees are home to many birds.
21．A和B之间的联系___________________________
22．与…有关联___________________________
例句：People, plants, and animals are connected with each other.
feel free (to do sth.)
be home to
the connection between A and B
be connected with
短语归纳
23．使用某物做某事___________________________
24．被用来做某事___________________________
25．参与某事;在…中起作用___________________________
use sth. to do sth.
be used to do sth.
play a part (in sth)
例句：1：We use pens to write.我们用钢笔写字
例句：Brooms are used to sweep the floor.扫帚被用来扫地
例句：Brooms are used for sweeping the floor.扫帚被用来扫地
引申：同义句be used for doing
句型积累 Sentences
PART 03
1. 蓝鲸是地球上最大、最重的动物。
The blue whale is the largest and heaviest animal on earth.
2.竹子是中国画中最受欢迎的主题之一。
Bamboo is one of the most popular subjects in Chinese paintings.
3. 竹子在中国似乎是一种非常受欢迎的植物。
Bamboo seems to be a very popular plant in China.
句型积累
最高级句型：主语 + be + the + 形容词最高级 + 名词 + in + 范围
最...之一句型：主语 + be + one of the + 形容词最高级 + 复数名词 + in + 范围
似乎是…：seem to be + 名词/形容词（用于表达推测或看起来的状态）
句型积累
4.因为这是观赏它的最美时节。As it is the most beautiful time to see it.
5. 没有它们的劳作，世界上约 80% 的植物都无法生长。
without their work, about 80 per cent of the plants in the world cannot grow.
6. 人们相信这些明亮的黄叶能给他们带来心灵上的喜悦.
People believe the bright yellow leaves can bring joy to their heart.
这是做某事的最…时候：it is + 形容词最高级+ time to do sth.
没有…，…无法…：Without…，cannot…
believe + 宾语从句,表示“相信…”
句型积累
7. 它是中国文化中美好品质的象征。
It’s _______________goodness in Chinese culture.
8. 人们可以用它来建造房屋、制作工具和乐器。
People can use it _______________ houses and make tools and instruments.
9. 然而，蜜蜂的数量正在减少。
However, the number of bees _______________.
10. 它的体重可达200吨。
It can weigh_______________ 200 tons.
11. 蓝鲸的寿命可达 90 岁。
Blue whales can _______________ 90 years.
a symbo of
to build
is dropping
as much as
live up to
知识精讲
language points
PART 04
添加标题
知识精讲
知识点1：seem 用法，似乎，好像
①seem + (to be) + 形容词 / 名词★
Bamboo seems to be a very popular plant in China.
②seem + to do sth.★
Bees seem to play an important role.蜜蜂似乎起重要作用。
③It seems + that 从句
It seems that pandas love bamboo.似乎熊猫喜欢竹子。
④seem like + 名词
This problem seems like a challenge.这个问题似乎是个挑战。
原句：Bamboo seems to be a very popular plant in China.
添加标题
知识点2：thousand 用法
知识精讲
原句：Thousands of tourists visit the Bamboo Sea.成千上万的游客参观竹海。
①具体数字+ thousand+名词复数（thousand 用原形）
There are three thousand students in the school.学校有三千名学生。
②thousands of + 名词复数（表约数，意为“成千上万的”）
Thousands of tourists visit the Bamboo Sea.成千上万的游客参观竹海。[P35]
易错点：
five thousand people five thousands people thousands of trees
添加标题
知识精讲
知识点3：区别among vs. between
①among：用于三者或以上的 “在… 之中”（强调范围）。
A bird sang among the flowers.一只鸟在花丛中歌唱。
②between：用于两者之间（常与and连用）。
The path is between two mountains.小路在两座山之间。
原句：Discuss the connection between plants, animals, and our lives.
原句：Among all animals, I love pandas the best.在所有动物中，我最喜欢熊猫。
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知识精讲
原句：The ginkgo tree is one of the oldest living trees in streets, parks, and gardens across China.
across在此意为“遍及；在…各处”
知识点4：区别across vs. cross vs. through
引申：across还可以表示“穿过”，具体用法和区别如下
①across（介词）：从表面“穿过”（如马路、河流）。
They walked across the bridge.他们走过桥。
②cross（动词）：= go across，意为“穿过”。
Be careful when you cross the road.过马路时要小心。
③through（介词）：从内部“穿过”（如森林、隧道）。
The river flows through the city.河流穿过城市。
添加标题
知识精讲
原句：the number of bees is dropping。
知识点5：the number of 与 a number of用法
短语 含义 谓语动词 例句
the number of… …的数量 单数 The number of bees is 10,000.
a number of… 许多… 复数 A number of plants need pollination.
添加标题
知识精讲
原句：
What do you know about the connection between humans and other insects, such as ants and butterflies
For example, they work hard together to make their homes.
知识点6：such as和for example
such as与前面的句子之间用逗号隔开，后面列举两个以上的同类人或事物
for example一般只列举同类人或事物的一个，在句中作插入语。用逗号隔开，可置于句首/句中/句末。
I like sports, such as tennis and basketball.我喜欢运动，例如网球和篮球。
Ball games, for example, is very popular with young people.例如，球赛非常受年轻人欢迎。
添加标题
知识精讲
原句：
Can you give another title for the text
What other interesting facts do you know about bees
知识点7：another、other、others、the other的主要用法
1.another:表示 三者或三者以上中的另一个（单数），强调 “泛指”，无范围限制。
This coat is too small. Can I try another 这件外套太小了，我能试另一件吗？
2.the other:特指两者中的另一个
I have two cats. One is black, the other is white.我有两只猫，一只黑色，另一只白色。
3.others:表示“其他的人或物”，相当于other +复数名词，泛指无范围的剩余部分。
Some people like coffee, others prefer tea.有些人喜欢咖啡，其他人喜欢茶。
添加标题
知识精讲
知识点8：too、also、either的用法,都表示“也”
1.too:用于肯定句或疑问句，常用句末，用逗号隔开或省略逗号
I like coffee, and she likes it too.我喜欢咖啡，她也喜欢。 Are you a student too 你也是学生吗？
2.also:用于 肯定句中，较正式。
①句中（实义动词前，be 动词 / 助动词 / 情态动词后）
He also plays the piano.他也会弹钢琴。 She is also a teacher.她也是一名老师。
②句首（用逗号隔开，强调“此外”）
Also, we need to buy some snacks.此外，我们需要买些零食。
3.either:用于否定句中，表示“也不”，常用句末，用逗号隔开或省略逗号
I don’t like tea, and she doesn’t like it either.我不喜欢茶，她也不喜欢。
原句：Actually we eat bamboo shoots too.
Bees are also one of the most interesting animals in the world.
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知识精讲
知识点9：辨析except、besides、but（都表示除了）
1. except：“除…之外（不包含）”，指从整体中排除部分。
I work every day except Sunday.（周日不工作）
区别于expect（动词）期望，预计，expect to do sth.期待做某事。
2. besides（介词/副词）：“除…之外（还包含）”，指在整体基础上增加。
Besides math, I like physics.（数学和物理都喜欢）
区别于beside（介词）“在…旁边”，表示位置。
3.but：“除…之外”（常用于 nobody, nothing, all 等词后）
Nobody but him can solve this problem.（只有他能解决）
还可以表示转折，意为“但是”
He is poor but happy.
原句：Blue whales live in all oceans except the Arctic Ocean.
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知识精讲
知识点10：宾语从句
原句：
Do you know why the Chinese love bamboo
Scientists believe that bees play a key role.
一、定义：在句子中充当宾语的从句，通常位于及物动词（如say, know, think, believe）、介词（如about, in）或某些形容词（如sure, glad, afraid）之后。
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知识精讲
二、引导词
1. 陈述句 → 用that(无实际意义，可省略)引导
She believes (that) honesty is important.
2. 一般疑问句→用 if/whether(意为“是否”)引导，以下情况只能用whether：
①与or not连用时：I wonder whether he will come or not.
②从句作介词宾语时：We’re talking about whether we should change the plan.
③从句位于句首时：Whether it rains tomorrow doesn’t matter.
④与不定式连用时：She doesn’t know whether to accept the offer.
3. 特殊疑问句→用原疑问词(what, who, which, when, where, why, how 等)引导
Tell me what you want.
I don’t know where she lives.
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知识精讲
三、语序
宾语从句用陈述句语序（即“主语+谓语”）。
I asked what time it was. I asked what time was it.
四、时态
主句时态 从句时态 例句
现在时态（一般现在时现在进行时现在完成时） 根据实际情况选择，不受主句限制 She says (that) she is happy today.
He knows (that) they will leave next week.
过去时态（一般过去时、过去进行时） 相应变为过去的某种时态 He said (that) he was busy yesterday.
She told me (that) she would visit her uncle.
任何时态 表示客观真理或事实，始终用一般现在时 The teacher said (that) the earth goes around the sun.
He knew (that) water freezes at 0°C.
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知识精讲
一、单项选择
She says ______ she likes reading novels.
A. that B. what C. if D. where
2.Do you know ______ he lives
A. that B. when C. where D. which
3.I wonder ______ she will come to the party or not.
A. that B. if C. whether D. what
4.He asks me ______ my favorite subject is.
A. what B. who C. where D. why
A
C
C
A
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知识精讲
二、合并句子
原句：“Are you free tomorrow ” He asked me.
合并：
原句：“What do you want ” She asked.
合并：
He asked me if/whether I was free the next day.
She asked what I wanted.
三、时态填空
She said (that) she ______ (visit) Beijing next month.
The scientist explained (that) light ______ (travel) faster than sound.
答案：would visit（主句为过去时，从句用过去将来时）
答案：travels（客观真理用一般现在时)
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知识精讲
知识点7：形容词副词最高级（单元语法）
【定义】最高级用于三个或三个以上的人或事物之间的比较，常用of/in短语来说明比较的范围，of 表示比较的对象属于同一范畴；in则表示不属于同一范畴。
【注意】形容词最高级前要加定冠词the，副词最高级前的the可以省略。
He is the cleverest student of all. 他是所有学生中最聪明的。(他属于学生)
He is the cleverest student in his class. 他是他班中最聪明的学生。(他在班级范围内)
This is his most interesting book. 这是他最有趣的一本书。
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知识精讲
【变化规则】
规则变化
单音节词和 部分双音节词 一般在词汇尾加-est tallest
以字母e结尾的词，在词尾加-st nicest
重读闭音节词词尾只有一个辅音字母时，先双写该辅音字母，再加-est 大胖瘦热脸湿红
biggest
以“辅音字母+y”结尾的双音节词，先把“y”变为“i”，再加-est funniest
多音节词和 部分双音节词 在词前加most most carefully
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知识精讲
不规则变化
1. good/well → best（最好的 / 地）
2. bad/badly/ill → worst（最坏的 / 最糟的）
3. many/much → most（最多的 / 地）
4. little → least（最少的 / 地）
5. far → farthest/furthest（最远的 / 最深远的，前者指距离，后者指程度）
The library is the farthest building on the left.图书馆是左边最远的那栋楼。
Love can reach the furthest corners of the heart.爱能抵达心灵最深远的角落。
6. old → oldest/eldest（最年长的 / 最古老的，前者指老的，旧的，后者作定语，指年龄）
表语：My grandfather is the oldest in the family.我祖父是家里年纪最大的。
定语：This is the oldest tree in the park.这是公园里最古老的树。
Her eldest son is a lawyer.她的长子是一名律师。
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知识精讲
【句型结构】
1.基本句型
①主语+ be+ the+形容词最高级+in/of ...
Tom is the tallest of these students. (Tom与students是一类) 汤姆是这些学生中最高的。
Tom is the tallest in his class. (Tom与class不是一类)汤姆是班里最高的。
②主语+实义动词（+the）+副词最高+in/of ...
Tom works (the) hardest in Class 3.汤姆是三班学习最刻苦的。
2.疑问句型
①疑问词+be/行为动词+最高级，A、B or C？
Who runs fastest, Tom, John or Jim 汤姆、约翰和吉姆谁跑得最快？
②疑问词+助动词+主语+动词原形（+the)+副词最高级，A、B or C？
Which city do you like best, Beijing, Shanghai or Guangzhou
你最喜欢哪个城市，北京、上海还是广州？
添加标题
知识精讲
【句型结构】
3.最高级加修饰词的句型
①主语+be+ one of the+形容词最高级+可数名词复数+in/of ... 最...之一
Hangzhou is one of the biggest cities in China.杭州是中国最大的城市之一。
②主语+be + the+序数词+形容词最高级+可数名词单数+in/of短语
The Yellow River is the second longest river in China.黄河是中国第二长河。
注意：如果最高级前有物主代词、指示代词、名词所有格等修饰时，则不用定冠词the。
My eldest daughter is 16 years old. 我最大的女儿16岁了。
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知识精讲
【句型结构】
4.比较级表达最高级的句型
①主语+be+比较级+than+any other+名词单数+in/of ...
②主语+be+比较级+than+the other+名词复数+in/of ...
Nanjing is larger than any other city/the other cities in Jiangsu Province.
南京比江苏省其他任何城市都大。
【活学活用】
1.Which subject is ______ for you, math, English, or history
A. difficult B. more difficult C. most difficult D. the most difficult
2.He is ______ than his brother, but he is ______ in the family.
A. younger; the youngest B. young; youngest
C. youngest; younger D. the youngest; younger
D
A
单元写作 Writting
PART 05
单元写作
【话题分析】
围绕“神奇的动植物”展开，可选取课文中提及的蓝鲸、竹子、蜜蜂等案例，结合“动植物的独特特征”“与人类的联系”“重要性”等角度，突出“动植物的奇妙之处及保护意义”。
单元写作
【思路点播】
①时态
以一般现在时为主（描述动植物的特征、习性等客观事实）。
可穿插现在完成时（如“科学家已经发现…”）或情态动词（should, must等，表达保护建议）。
②结构
·引入：点明主题（如“自然界有许多神奇的动植物”）。
·中间：分点介绍动植物的特征、作用及与人类的联系（可结合课文案例）。
·结尾：呼吁保护动植物或总结其重要性。
③细节
·运用最高级（如the largest, the fastest, the most important）体现“神奇”。
·结合数据（如蓝鲸体重200吨、竹子一天生长一米）增强说服力。
·加入感官描写或情感表达（如“蜜蜂的舞蹈很有趣”“蓝鲸的游动很美”）。
单元写作
【写作题目】
题目：The Wonder of [动植物名称]
提示：选择一种你觉得神奇的动植物（如蓝鲸、竹子、蜂鸟）；描述其独特之处（如体型、习性、功能）；说明它为何让你感到神奇或对自然的意义。80-100词。
【佳作展示】The Wonder of Bamboo
Bamboo is one of the most amazing plants in nature. It can grow almost 1 meter a day. Unlike trees, bamboo is a grass, but it can be as tall as a 10-floor building.
It’s the most useful plant in daily life too. People use it to build houses, make tools, and even eat bamboo shoots.In Chinese culture, bamboo is a symbol of strength and honesty.
bamboo shows how closely we’re connected to nature. We can’t live without them. Let’s protect them and keep our planet lively!
当堂检测 Exercise
PART 06
当堂检测
一、词汇变形填空
The ______ (amaze) thing about pandas is their ability to survive on bamboo.
We should protect wildlife to keep the ______ (connect) between plants and animals.
The ______ (weigh) of a blue whale can reach 200 tons.
She felt ______ (disappoint) because the flowers didn’t bloom.
Good ______ (communicate) is important for teamwork.
答案：1. amazing 2. connection 3. weight 4. disappointed 5. communication
当堂检测
二、句型转换
The blue whale is the largest animal on earth.（改为同义句）
No other animal is ______ ______ ______ the blue whale on earth.
2."Do bees play an important role " She asked.（改为宾语从句）
She asked ______ bees ______ an important role.
3.蜜蜂似乎在生态系统中起着关键作用。
Bees ______ ______ ______ a key role in the ecosystem.
4.没有植物，人类无法生存。
______ plants, humans ______ survive.
答案：1. as large as 2. if/whether; played 3. seem to play 4. Without; can’t
当堂检测
三、改错
The teacher told us that the moon moved around the earth.
错误：______ 改为：______
2.I wonder if to go hiking or stay at home.
错误：______ 改为：______
3.There are two thousands students in our school.
错误：______ 改为：______
thousands → thousand
moved → moves
if → whether
Thanks