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必修二unit4 Animal extinction


Animal extinction

Look at these pictures and answer questions:

Q1:What are they?

They are _________ dinosaurs

Q2:What happened to them?
They

___________________a disappeared /died out long time ago.

Guessing
What might be the reasons for their extinction?

Fast Reading

When did dinosaurs live? Tens of millions of years ago, long before humans came into being. When did dinosaurs die out?
Dinosaurs died out suddenly about 65 million years ago.

How did dinosaurs die out?
Maybe that’s because a huge rock from space hit the earth and put too much dust into the air or because the earth got too hot to live on.

Careful Reading

True or false
F 1. There are many different species of dinosaur and all of them have been found in China. a number F 2. Not long ago, a rare new species of bird-like dinosaur was discovered in Henan Province. Liaoning

Careful Reading

think F 3. Some scientists are sure dinosaurs died out because the earth got too hot for the dinosaurs to live on any more.

Language points
1. They lived on the earth tens of millions of years
ago, long before humans came into being…

long before “很久之前”,引导 ______从句。 时间状语
It will be long before +从句(很久之后才…)
It will (not) be long before +从句(不久就....)

Ex. It ___ long before we___ the result Of the experiment.

A. will not be; will know B. is; will know
C. will not be; know D. is; know

拓展:before long 不久以后

on the earth 在地球上。在earth, sun, moon等表达世 界上独一无二的名词前,要加the。 on earth 究竟;到底。

come into being 不可以用被动语态

◆ 2.come into being
社会团体形成

:形成, 产生

■ 漏油事件危害到了许多海鸟的生存,这促使了许多以保护鸟类为目标的

Incidents ______with oil spills ____many harm sea birds, which has encouraged societies to ____________, come into being whose ___ goal is to save the birds
■ 我们的学校是1997年建立的 ※ Our

school ___________ in 1997

A set up

B was set up

There is a story about how the word “ sandwich”___________ came into being B was come into being AA came into being B was came into being C came to power D was came to power

◆ 3.according to

: 按照,根据….所说

■ 根据标题和图片, 这篇文章主要讲的是什么内容?

What is the main idea of the passage _________ according to the ____ title and the pictures
■ We

are paid __________ how much work we did. many old people, he likes this kind of song. B according to D as a result of

■ ____________

A With the help of C In common with

4. Some scientists think it came after an unexpected incident when …

incident n. 事件;事变 The serious incident along the border increased our fears of the war.

accident, incident, event这些名词均有“事

故、事件”之意。
accident: 强调偶然或意外发生的不幸事情。

incident: 既可指小事件或附带事件,又可指 政治上具有影响的事件或事变。 event: 可指任何大小事件,但尤指历史上的 重大事件。

5.so that
野生动植物保护基金会定期视察大熊猫保护区,结果 那里的大熊猫得到了 很好的保护。 他们确保任何大熊猫捕猎者会受到惩罚,毫不留情。

The WWF _______ inspects the panda_______ reserve regularly _______ so that the pandas there are well protected. They make sure that anyone hunts a panda will be punish ____________ without mercy who ____


“结果…” “为了”

引导结果状语从句 引导目的状语从句

◆ so…that…


“如此…以至于”

Every body lent a hand so that the work (结果 ) was finished ahead of time. ■ Please speak loudly and clearly so that ( everyone can hear you 为了) ■ The flying carpet travelled so fast that next minute they were in Zimbabwe

Dodo

It stood about a meter (3 feet) tall, weighing about 20 kilograms, living on fruit, and nesting on the ground.

The dodo has been extinct since the mid-to-late 17th century. It became extinct in about 1681. Its extinction was directly attributable to human activity.

New expressions
set a trap 设圈套 They set a trap for him and he walked right into it. The police set a trap to catch the thief.

spear n. 矛 The fisher used a spear as his weapon.


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