以下为课件内提取的文本内容，仅供参考：

Unit4 Green world

The Birth of a Science

Warming up

Look at the pictures and match each flower with its correct name.

Peony

Peony

the Chinese national flower

牡丹，国色天香，一直被国人视为富贵、吉祥、幸福、繁荣的象征。 牡丹是原产于我国的木本名贵花卉。从唐代起，牡丹就被推崇为“国色天香”。尽管朝代更迭，世事沧桑，牡丹统领群芳，影响深远，地位尊贵。 我国有种牡丹、赏牡丹的悠久历史，并形成了丰厚的牡丹文化。牡丹分布广泛，品种繁多，对牡丹的喜爱和培育，我国有着广泛深厚的群众基础。赏牡丹、唱牡丹、开牡丹花会成为各地、各民族的一种喜庆盛事。

Tulip

Rose

Sunflower

Which flower is your favorite? Explain why.

Pre-reading

Why was Carl Linnaeus important to the history of botany as a science?

His system of grouping plants in families was unique, which based on the arrangement of the male and female organs in the flowers.

While-reading

I. Fast reading

How many people are mentioned in the passage?

Carl Linnaeus

Daniel Solander

Joseph Banks

Captain Cook

II. Careful reading

Before Linnaeus botany was ________．A．studied by doctors B．unknown to anyoneC．fully developed D．a branch of medicine

2. Some economic species plants such as____could help to develop local economies．A．rose and peony B．tea and appleC．cocoa and hemp D．Cocoa and lemon

3. It was ____ who made Kew a centre of scientific and economic research．A．Joseph Banks B．Captain CookC．Linnaeus D． Daniel Solander

4.Paragraph one of the text mainly tells us ___ ．A．the importance of botanyB．how to classify plant species into groupsC．Linnaeus’contribution to botanyD．Linnaeus’discoveries about different species

5.Captain Cook made ___voyages altogether around the world.A．one B．Two C．Three D.four

Post-reading

1. How did scientists classify plants before Linnaeus?

2. What were the goals of James Cook’s first voyage around the world?

Some scientists classified plants into herbs and trees, or according to the shape of the fruit, or whether they had flowers or not.

To study the passing of the planet Venus across the sun; to record, classify and describe all plant and animal life observed during the trip; to search for an unknown southern continent.

3. Why did Joseph Banks have to supply his own money to equip part of the expedition?

4. What could be a possible explanation for the name “strawberry”?

Because the government would not pay for such a new field of science as botany.

When people plant strawberry, they spread straw under the fruit to reduce the necessary amount of watering.

Language points

1. group (v.)

The children group round the piano. ( )

We can group animals into several types.( )

2. promote

My daughter’s just been promoted! ( )

The organization works to promote friendship between nations. ( )

集合

类集

提升

促进

3. 向某人提供某物

supply sb. with sth. / supply sth. to sb.

provide sb. with sth. / provide sth. for sb.

offer sb. sth. / offer sth. to sb.

他们向受灾地区的人们提供了食品援助。

They supplied the people in the flood-stricken area with food aids.

你还可以怎样翻译？

他成为一个卓越的学者，但却牺牲了健康。

他自己出钱印了书。(have sth. done)

4.由某人负担费用

牺牲,以……作代价

at one’s expense

at the expense of

He became a outstanding scholar, but only at the expense of his health.

He had his book printed at his own expense.

Consolidation

Translate the following phrases into English:

1. 详细地

2. 处于支配的地位，负责

3. 由……负责

4. 任命某人为……

5.将……分类成

6. 计算……之间的距离

in detail

in charge of

in the charge of

appoint sb. as

classify…into…

calculate the distance between…

7. 一代一代传下去

8.建于……之上；以……为基础

9.参与; 陷入 ……的活动

10.根据;视……而定；按照

11.搜索；寻找

12.总而言之

pass on from one generation to the next

be based on

be involved in

according to

search for

altogether