资源简介

(共34张PPT)
Section B
2a-2d
Unit
Amazing Animals
and Plants
Learning Aims
语言能力
文化意识
思维品质
学习能力
Acquire and apply academic vocabulary to describe biological features.
Use context clues and word maps to expand lexical networks independently.
Classify words by themes and analyze word-formation patterns.
Recognize how vocabulary reflects human understanding of global plant-animal diversity.
2a
Circle the odd ones. Then give your reasons.
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
happiness performance reality education movement decision
Do you know these nouns
Are they the original forms or changed ones
We can change verbs/adjectives into nouns by adding suffix.
We can add suffixes to their endings
[ s f ks] 后缀
happy (adj.) + -ness → happiness (n.)
perform (v.) → performance (n.)
educate (v.) → education (n.)
real (adj.) → reality
move(v.)-movement (n.)
decide(v.)-decision (n.)
2b
Add the endings -ance, -(t) ion, -ness, and -ity to form nouns. Use your dictionary.
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 Add the endings -ance, -(t)ion, -ness, and -ity to form nouns. Use your dictionary.
词缀affix
前缀prefix
后缀suffix
To change the meaning or the part- of - speech
后缀suffix
-age
-ee/-er/-or/-ist
-ication/ -tion/-sion
-dom
-ance/-ence
-al
-ment
-(i)ty
-ness
-ism
-ery
Can you classify them
Do you know some suffix
后缀suffix
-age
-ee/-er/-or/-ist
-ication/ -tion/-sion
-dom
-ance/-ence
-al
-ment
-(i)ty
-ness
-ism
-ery
Can you classify them
Do you know some suffix
加在v.后
加在adj.后
加在v./adj.后
-age
-ee/-er/-or/-ist
-ication/-tion/-sion
-al
-ment
-ery
a state, condition, trait, or quality, an action, a place for such, or its result
表达一种状态、条件、特点、品质、动作、地点或结果
-dom
-(i)ty
-ness
加在adj.后
a state, condition, trait, or quality表达一种状态、条件、特点、品质
-ance/-ence
-ism
加在v./adj.后
a state, condition, trait, or quality, an action, a doctrine, theory, or a set of guiding principle表达一种状态、条件、特点、品质、动作、教条或是理论主义
加在v.后
Summary
Complete the sentences with the correct forms of the words in the box.
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/appeared
store
weighs/weighed
imagine
2c
/ m r m /
n. 蘑菇；伞菌
/t n/
n. 吨
Complete the passage with the correct forms of the words in the box.
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
2d
/ kla m t/ n. 气候
/pi / n. 豌豆
/r l/ n. 作用；职能；角色
play a role (in)
在……中发挥作用；
扮演角色
Read 2d again and complete the tasks.
1. What role do frogs play in our ecosystem ( )
A. An unimportant role B. An important role C. A destructive role
2. How small can the smallest frogs be ( )
A. About the size of a pea B. As big as a human hand C. As big as a mouse
3. How do frogs help to protect farms ( )
A. By pollinating plants B. By eating insects C. By loosening the soil
B
A
B
4. Why are frogs popular subjects for studies on climate change and
the ecosystem ( )
A. Because they are brightly colored and easy to observe.
B. Because they have a very long lifespan.
C. Because they can live on both land and in water, making them sensitive
(敏感的) to environmental changes.
C
5. What is the main purpose of this passage ( )
A. To tell a fun story about frogs.
B. To describe the different sizes and appearances of frogs.
C. To introduce the important role of frogs in the ecosystem and
some of their key features.
C
Language points
Point 1
I can’t imagine my life without my pets. They mean a lot to me.
imagine意为“想象”，后可接名词、代词或动词-ing形式作宾语。mean a lot to sb. 表示“对某人意义重大”。
常见例句：
I can't imagine living without electricity.
我无法想象没有电的生活。
Point 2
You may not realize it, but frogs play an important role in our planet's ecosystem.你可能没有意识到，但青蛙在我们地球的生态系统中起着重要的作用。
play a role ( in )
①(在…中)发挥作用;(在…中)有影响,其中 role 用作名词,意为“作用;职能;角色”。同义短语:play a part(in sth)
e.g. Schools play an important role in education.
学校在教育中起着重要的作用。
②扮演角色
e.g. He will play an important role in the movie.
他将在这部电影中扮演一个重要的角色。
Point 3
The smallest frogs are about the size of a pea, while larger ones can grow as bigas a human hand.最小的青蛙大约只有豌豆那么大，而大一点的青蛙能长到人类手掌那么大。
while 【连词】
①而;然而 表示两种情况的对比。
e.g. I like coffee while my sister likes tea.
我喜欢喝咖啡,而我姐姐喜欢喝茶。
②与……同时;当……的时候
引导时间状语从句,从句谓语动词须用延续性动词。它强调主句的动作是在从句动作发生的过程中发生的,或者主从句的动作几乎同时进行。
e.g. While we were talking, the teacher camein.
当我们在说话时,老师进来了。
e.g. I was doing my homework while my mother was cooking.
我妈妈在做饭时,我在做家庭作业。
Point 4
However, not everyone understands their importance in nature.然而,并不是每个人都了解它们在自然界中的重要性。
部分否定
not与every及含有every的不定代词连用时表示部分否定,意为“并不是每个……都”。
e.g. Not everyone is interested in the movie.
并不是每个人都对这部电影感兴趣。
【拓展】① not 与 all 连用,意为“并不是所有的都;并不都”,表示部分否定。
e.g. Not all the students like English.
并不是所有的学生都喜欢英语。
② not 与 both 连用,意为“并不是两个都”表示部分否定。
e.g. Both of them are not good at dancing.并不是他们两个都擅长跳舞。
Point 5
1. -ance
规则：通常加在动词后面 ，构成抽象名词表示行为、状态、性质等 。
e.g. perform（v.表演；执行 ）→ performance（n.表演；表现 ）
appear（v.出现；显得 ）→ appearance（n.出现；外貌 ）
The rules for forming nouns with the suffixes -ance, -(t)ion, -ness, -ity:
2. -(t)ion
规则：通常加在动词后，构成名词表示行为、过程或结果。
e.g. educate（v.教育 ）→ education（n.教育 ）
decide（v.决定 ）→decision（n.决定 ）
imagine（v. 想象 ）→ imagination（n. 想象力）
3. -ness
规则：通常加在形容词后，构成抽象名词表示形容词所描述的性质、状态。
e.g. happy（adj.幸福的；快乐的 ）→ happiness（n.幸福；快乐 ）
kind（adj.善良的 ）→ kindness（n.善良；仁慈 ）
4. -ity
规则：通常加在形容词后，(部分词需对词尾做适当变化 , 如去掉
不发音 -e 等)，构成名词，表示具有某种特性。
e.g. active（adj.积极的 ）→ activity（n.活动；活跃 ）
possible（adj.可能的 ） → possibility（n.可能性 ）
Point 6
disappointed adj.失望的；沮丧的
一般不用于进行时。
由“disappoint (v. 使失望；使破灭) + -ed(后缀)”构成。
be disappointed with/in sb./sth.对某人/事失望
be disappointed at/by sth.对某事失望
be disappointed to do sth.对做某事感到失望
Disappointed 失望？ (P36 1b)
disappointed
disappointing
“失望的；沮丧的”，通常表示人的主观感受。
“令人失望的；令人沮丧的”，通常表示事物自身具备的性质。
通常，-ed 形式的形容词表示人的(身体上 或精神上的)状态或人内心的感受，常意为“感 到……的”；而-ing形式的形容词则表示事物的 性质或特征，常意为“令人……的”。
【辨】disappointed与disappointing
Point 7
in order to 为了；以便 表示目的，后接动词原形，可放在句首或句中，其否定形式为in order not to。
Teachers are strict with their students in order to help them make great progress.为了帮助学生取得巨大进步，老师对他们要求严格。
In order to store honey, they create honeycombs. 为了贮存蜂蜜，它们建造了蜂巢。 (P36 1b)
【拓】动词不定式和in order that 也可表示目的，两者有时可与in order to进行同义转换。
I worked hard to get good grades.=I worked hard in order that I could get good grades.=I worked hard in order to get good grades.
我努力学习以便能取得好成绩。
Exercises
单项选择
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
二. 用方框中所给词的适当形式填空
in one’s hometown， play a role in， as…as…， in nature， the size of，
live up to， do studies on
1. The new library is three classrooms put together.
2. My sister is not tall I am， but she is much stronger.
3. Regular exercise keeping our bodies healthy.
4. We can see many amazing sights ， like rainbows.
the size of　
as　
as　
plays a role in　
in nature　
6. There is a beautiful park ， and I usually relax there on weekends.
7. She needs to her promise to finish the project on time.
in my hometown　
live up to　
5. Scientists in this city how plants grow
in different conditions(条件) last year.
did studies on　
二、用所给单词的适当形式填空
1. The _____________ (appear) of the sun from behind the clouds made us happy.
2. We should show ____________ (kind) to the poor.
3. It's ___________ (importance) for us to learn a foreign language well.
4. The two cities are __________ (connect) by a railway.
appearance
kindness
important
connected
5. The little cat is one year old and (weight) one kilogram.
6. In autumn， you can find many (mushroom) in
the forest.
7. (climate) change makes summers hotter and
winters warmer.
weighs　
mushrooms　
Climate　
8. Everyone went to the party John. He had to look after his little sister at home.
except　
9. We all look for (happy) in our lives.
10. She felt (disappoint) with the results of
the exam.
11. your help， we won’t be able to get there.
12. This truck(卡车) can carry several (ton) of goods.
happiness　
disappointed　
Without　
tons　
三、 完成下列句子（每空一词）。
1. ——关于蓝鲸什么地方令人神奇？
——它是世界上最大的动物。
— 　What’s　 amazing 　about　 the blue whale？
— It’s 　the　 　largest/biggest　 animal in the world.
2. 竹子是在中国绘画中最受欢迎的主题之一。
Bamboo is 　one　 　of　 　the　 　most　 　popular　 　subjects　 in Chinese paintings.
3. 竹子在中国似乎是非常受欢迎的植物。
Bamboo 　seems　 　to　 　be　 a very popular plant in China.
What’s　
about　
the　
largest/biggest　
one　
of　
the　
most　
popular　
subjects　
seems　
to　
be　
一
二
三
4.这片雨林是许多珍稀动植物的家园。
This rainforest ___ ______ ___ many rare animals and plants.
5.为了照料庄稼，农民们每天早起。
Farmers get up early every morning ____ ______ ____ take care of their crops.
6.蜜蜂在授粉过程中发挥着重要作用。
Bees _____ ____ _________ _________ ___ the pollination process.
in order to
is home to
play an important part/role in
7. 事实上，没有它们的工作，世界上大约80％的植物无法生长。
In fact， without their work， about 　80　 　per　 　cent　 　of　 the plants in the world cannot grow.
8. 然而，蜜蜂的数量在下降，科学家们很担心。
However， 　the　 　number　 　of　 bees 　is　 dropping，
and scientists are worried.
80　
per　
cent　
of　
the　
number　
of　
is　
9. 考虑你能做什么来保护地球上最神奇的动物之一。
　Think　 　about　 what you can do 　to　 　protect　 one of the
most amazing animals on earth.
Think　
about　
to　
protect　
一
二
三
本课句型
Summary
我都 学会了!
Key words
Expression
happiness; disappoint; mushroom; ton; role; pea; climate
play a part (in sth); be home to sb / sth; play a role (in)
You may not realize it, but frogs play an important role in our planet's ecosystem.
The smallest frogs are about the size of a pea, while larger ones can grow as bigas a human hand.
Sentences
Basic (必做)
Read the textbook or use the dictionary to find more nouns that end with -ance, -(t)ion, -ness, and -ity.
Improving(选做)
2. Draw your own mind map about frogs. Then write a short passage based on the mind map about frogs.
Extend (选做)
3.Find more information about frogs and share it with friends.
Homework
Thank you !

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