高中英语外研版 (2019)必修 第二册Unit 6 Earth first学案

Book2 Unit 6 Earth first

Starting out

Learning Aims:

      To think about some environmental problems we are facing.

      To express your ideas on how these environmental problems arise by watching a video and looking at some pictures.

      To discuss with classmates on how to protect the earth.

Step1 Warming up

Look at the cartoons on Page 81 and List the top 10 environmental problems.

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Step2  watch and see

1.How much do you know about the serious situation humans faces? Watch the video and answer the questions.

1） Which of the facts in the video do you find most alarming?

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2） What does the video want to tell us?

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2. Listen and complete the missing numbers.

1）  _______ square kilometers of forest disappear every year

2）  around _______ trees are cut down each day just to make toilet paper

3）  each day, around _______ to _______ species of plants and animals become extinct-nearly _______ times the natural rate of extinction

4）  over ________ animals are killed by ocean pollution each year

5）  _______ people don't have clean drinking water

6）  a plastic bottle can take ______ years to break down

7）  the ice caps are more than ______ thinner than they were ______ years ago.

3.Look at the cartoons on page 81 and answer the questions.

1）What environmental problem does each cartoon refer to?

2）What are the causes of these problems?

3）What do you think is the most serious environmental problem we face today?

Step 3 Exercises

 Match the words with meanings

(1)shark　　　　       (1)v.使(某人)惊恐,吓唬

(2)scare              (2)n.鲨(鱼)

(3)dive                (3)n.灭绝,绝种

(4)target             (4)v.致力

(5)extinction             (5)n.残酷;残暴

(6)highlight             (6)v.(通常指使用呼吸设备的)潜水

(7)cruelty             (7)v.把……作为目标

(8)hunting             (8)v.建立

(9)damage             (9)n.干旱,旱灾

(10)affect             (10)v.使恢复

(11)adopt             (11)v.(使)漏,(使)渗漏

(12)reusable             (12)v.使……突出,使注意力集中于

(13)release             (13)v.搬走,移走,去掉

(14)campaign          (14)v.竭力主张,强烈要求,敦促

(15)fog                 (15)adj.可再度使用的,可多次使用的

(16)infection             (16)adj.焦急的;担忧的

(17)sustainable          (17)v.促成,造成(某事发生)

(18)contribute          (18)v.破损;损害

(19)reserve              (19)n.雾

(20)fin                 (20)v.切去(鱼的)鳍 n.鱼鳍

(21)drought              (21)v.影响

(22)restore              (22)n.(宣传)活动

(23)leak                (23)v.释放,排放

(24)remove             (24)n.感染,传染病

(25)devote             (25)adj.可持续的,不破坏环境的

(26)concerned          (26)n.(野生生物)保护区

(27)urge               (27)v.采取(某种方法)

(28)establish             (28)n.打猎;狩猎