(共28张PPT)
人教版八年级上册
SectionB
2a-2c
Unit 4 Amazing Plants and Animals
Learning objectives
1.复习阅读部分内容，梳理文章结构，能精准复述文本内容。
2.识别并理解词汇的基本含义、词性及构词规律，掌握名词后缀的基本用法。
3.能够正确运用词汇的适当形式完成句子和语篇填空，理解词汇在语境中的具体含义。
4.能够在真实情境中创造性使用所学词汇表达个人情感、描述事物，并初步理解词汇在生态语境中的引申意义。
Let’s enjoy a video about bees.
Warming-up
情景设问：超市空架 → 引出主题
Fact 1: 蜜蜂授粉；
Fact 2: 蜜蜂趣事
现状危机＋号召行动
General Introduction (The topic of the text)
Body (The example and supporting details)
Para. 1
Para. 2
Para. 3
Para. 4
Conclusion (Problem and call to action)
Revision
Analyze the structure:
50 to 100 flowers
pollination
plants grow
hard-working
important
interesting
They work hard together to make their homes and create honeycombs to store honey.
They communicate with each other by dancing.
dropping
Revision
Analyze the content:
supporting details
Retell the text according to the information.
hard-working
most important
most interesting
The problem bees face: The number of bees ...
Call to action: Think about what ...
People, plants, and animals are all connected. We need each other to live.
one of the best examples
supporting details
their greatest work ...
visit ...
take ..
help ...
without ...
work hard ...
how they ...
Bees
supporting details
Revision
New drills
Pay attention to these words.
What do the words in the same group have in common
habit height size weight
joy happiness fun enjoy
angry disappointed smart sad
appear look seem watch
honey milk juice bread
nouns
positive feelings
adjectives
verbs
nouns
1. habit height size weight
2. joy happiness fun enjoy
3. angry disappointed smart sad
4. appear look seem watch
5. honey milk juice bread
Circle the odd ones. Then give your reasons.
2a
different
Tips: you should pay attention to the words’ part-of-speech,semantic category,grammatical function,substance category.（注意单词的词性、词义范畴、语法功能和物质类别）
3. angry disappointed smart sad
2. joy happiness fun enjoy
1. habit height size weight
height（身高；高度 ）、size（大小；尺寸 ）、
weight（重量 ）都用于描 述事物的 “物理量化属性”。
它是动词，其他三个是名词表示积极情绪：“joy”
（欢乐 ）、“happiness”（幸福 ）、“fun”（乐趣 ）
smart说的是个人聪明特质，其他三个是负面情绪形容词：angry”（生气的 ）、“disappointed”（失望的 ）、“sad”（难过的 ）
Check the answers:
5. honey milk juice bread
4. appear look seem watch
watch是实际的观看动作，其他三个是表达表象 / 印象的: appear”（似乎）、“look”（看起来 ）、“seem”（好像；仿佛 ）
bread”（面包 ）是 “固体食物” ，和前三个是液体饮品类
(1) act
(2) good
(3) kind
(4) appear
(5) real
(6) imagine
(7) connect
(8) popular
(9) communicate
(10) important
Divide the words into two groups (verb and adjective).
Verb 动词
Adjective 形容词
act
good
kind
appear
real
imagine
connect
popular
communicate
important
Practice
kind (adj.)
名词 n.
+ ness
kindness
perform (v.)
+ ance
discuss (v.)
+ ion
performance
discussion
able (adj.)
+ eity
ability
名词后缀
Discussion
How can a verb or an adjective become a noun
[ s f ks] 后缀
Add the endings -ance, -(t) ion, -ness, and -ity to form nouns.
Use your dictionary. 给以下词汇添加后缀，使之变成名词。
1. act_________________ 2. good _________________
3. kind_________________ 4. appear _________________
5. real_________________ 6. imagine_________________
7. connect_________________ 8. popular _________________
9. communicate _____________ 10. important _________________
action
goodness
kindness
appearance
reality
imagination
connection
popularity
communication
importance
2b
Can you find any rules Share your findings with your partner.
verbs → nouns adjectives → nouns
act good
appear kind
imagine real
connect popular
communicate important
action
appearance
imagination
connection
communication
goodness
kindness
reality
popularity
importance
v.＋ -(t)ion / -ance
adj.＋ - ness / - ity / - ance
n.
-ance 结尾（多表 “行为、状态” ）
-(t) ion 结尾（多表 “动作、结果” ，动词变名词常用 ）
-ness 结尾（形容词 + ness 变 “状态、性质” ，超规律 ）
-ity 结尾（形容词 + ity 变 “性质、状态” ，稍正式但基础 ）
-ness
kindness
happiness
illness
-ment
development
amusement
management
-ce
convenience
silence
patience
-ion
pollution
suggestion
discussion
-ing
building
meaning
meeting
-t
complaint
weight
-ity
curiosity
diversity
表示事物 抽象名词居多
Summary
height
security
1. I felt ____________ when my favourite flowers died.
2. After the rain, some mushrooms ________ in the garden.
3. In my hometown, people often use bamboo baskets to ______ food.
4. What did you put in your luggage It _______ a ton.
5. I can’t ________ my life without my pets. They mean a lot to me.
appear disappoint imagine store weigh
disappointed
appear
store
weighs
imagine
形容词
动词原形
动词原形
动词原形
动词单三
Complete the sentences with the correct forms of the words in the box.
2c
mushroom / m r m /
n. 蘑菇；伞菌
ton /t n/ n. 吨
对……来说意义重大
The smallest ones are as tiny as a pea, and some big ones can be as large as your hand!
They can jump in the field.
They live in water or on land.
Guess what animal is it
pea /pi / n. 豌豆
Guessing game
It’s a frog.
What do you know about frogs
Frogs play an important role in our ecosystem.
[ i k s st m] 生态系统
play a role (in) 在……中发挥作用；扮演角色
You may not realize it, but frogs play an important role in our ________ ecosystem. The smallest frogs are about the size of a pea, while larger ones can grow as big as a human hand. Many people know that frogs help to _______ farms by eating insects. _________, not everyone understands their __________ in nature. Frogs can live on _____ and in water. Because of this, they are popular subjects in studies on climate change and the ecosystem.
however important land planet protect
planet's
protect
However
importance
land
形容词
动词原形
副词
名词
名词
Complete the sentences with the correct forms of the words in the box.
2c
但是
重要的
陆地
行星地球
保护
You may not realize it, but frogs play an important role in our
planet's ecosystem. (课本P38, 2d)
你可能没有意识到,但青蛙在我们星球的生态系统中起着重要作用。
① act/play the role of... 扮演……的角色
② play a role in... 在……中扮演角色/发挥作用
She acted/played the role of Lady Macbeth in the play.
她在剧中扮演麦克白夫人这一角色。
He was invited to play a role in this TV play.
他被邀请在这部电视剧里扮演一个角色。
Let’s learn and take notes:
The smallest frogs are about the size of a pea, while larger ones can grow as big as a human hand. (课本P38, 2d)最小的青蛙大约只有豌豆那么大，而较大的青蛙能长到人类手掌那么大。
Let’s learn and take notes:
这是一个并列复合句，由“while”连接两个分句，对比说明青蛙体型的两种极端情况，突出青蛙体型差异之大。
Some students prefer to study alone, while others like to work in groups.有些学生喜欢独自学习，而另一些学生则喜欢小组学习。
She likes to stay at home on weekends, while her brother enjoys going out to play sports. 她周末喜欢待在家里，而她弟弟则喜欢出去运动。
Complete the mind map about frogs.
protect farms by ___________
popular subjects of ___________
and the _____________
_________
Frogs
____________
____________
____________
_________
living places
sizes
eating insects
climate change
ecosystem
the size of a pea
as big as a human
hand
on land
in water
importance
What can frogs do for nature
Frogs help to protect farms by eating insects.
Frogs can help in studies on climate change and the ecosystem.
Frogs play an important role in the planet's ecosystem.
一、单项选择
( )1. I was very ______ when I heard the bad news.
A. angry B. anger C. angrily D. angrier
( )2. The little boy can’t ______ how big the world is.
A. imagine B. imagine about
C. imagine with D. imagine to
( )3. The old man likes to ______ his old photos in the box.
A. store B. save C. enjoy D. hold
( )4. The ______ of the elephant is about 5 tons.
A. high B. height C. weigh D. weight
A
A
A
D
Exercise
1. I’d like to buy some sausages, ___________ (mushroom), onions and cheese to make a pizza.
2. Volunteers bring _________ (happy) to the elderly in nursing homes.
3. She experienced ______________ when she didn’t get the job she had applied for. (disappoint)
4. The film Coco helps viewers understand the ___________ (important) of family and dream.
5. Let’s find out what else we can do __________ (protect) as many animals as possible.
mushrooms
happiness
disappointment
importance
to protect
二、用所给单词的适当形式填空
基础作业：
整理名词后缀的知识点，并画成思维导图。
提升作业：
模仿2d的段落结构，写一个关于另一种动物（如蜜蜂、蝴蝶等）的短段落，使用至少3个本课学到的词汇。
拓展作业：
研究青蛙或其他两栖动物在生态系统中的重要性，用英文写一段80词左右的介绍，尽量使用本课学到的词汇。
Homework
谢谢
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