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(共23张PPT)
Unit 4
Amazing Plants and Animals
Section B
Vocabulary in Use 2a-2d
Learning objectives
Review
What knowledge point comes to mind when you see this picture
Do you still remember the rules for forming the superlative
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
2a
/ h pin s/
n. 幸福；快乐
/ d s p nt/
v. 使失望；使破灭
Circle the odd ones. Then give your reasons.
1. habit height size weight
2a
“height”“ size” and“ weight”are about physical characteristics(身体特征), while“habit”is about what a person usually does.
Circle the odd ones. Then give your reasons.
2. joy happiness fun enjoy
2a
“Joy” “happiness” and “fun” are all nouns, while “enjoy” is a verb.
Circle the odd ones. Then give your reasons.
3. angry disappointed smart sad
2a
“Angry”“disappointed” and “sad” are all used to describe people’s negative emotions(负面情绪),while“smart” is mainly used to describe a person’s intelligence or quick-witted qualities(机智的品质)
Circle the odd ones. Then give your reasons.
4. appear look seem watch
2a
“Appear”“look” and “seem” are all linking verbs, while “watch" is a main verb.
Circle the odd ones. Then give your reasons.
5. honey milk juice bread
2a
“Honey” “milk” and “juice” are drinks or can be used in drnks , while “bread” is food.
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 _________________
goodness
appearance
reality
imagination
connection
popularity
communication
importance
2b
action
kindness
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
Langage points
1.happiness 幸福
happiness【不可数名词】幸福;快乐
e.g. I want to share my happiness with you.
我想和你分享我的幸福。
【拓展】 英语中,有些形容词加后缀-ness 可构成名词,表示性质、状态。类似的常见词还有:
good→ goodness 美德 ill→illness 疾病 sad→sadness 悲伤
Langage points
2.It weighs/weighed a ton. 它非常重。
ton【可数名词】吨
e.g. An elephant weighs several tons.一头大象重达几吨。
【拓展 】tons of 大量的;许多的，后接可数名词复数或不可数名词,相当于a lot of/lots of.
e.g. She often gets tons of presents on her birthday.
她在生日那天常收到很多礼物。
They have tons of work to do.他们有很多工作要做。
Langage points
3.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。
Langage points
3.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 )
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。
Langage points
4.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。
Langage points
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。
Langage points
5.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。
Langage points
【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。
Summary
key words:
happiness; disappoint; mushroom; ton; role; pea; climate
key phrases:
play a part (in sth); be home to sb / sth; play a role (in)
Homework
Memorize the new words and phrases.
Preview the next part：预习教材 Section B 后续的内容，提前了解相关的话题和词汇，为下节课的学习做好准备
Thank you！

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