Unit 2 Saving the Earth(拯救地球)

Unit 2 Saving the Earth

Topic 1 Pollution has caused too many problems

.

Section B

dge aims

：

掌握本课的重点词汇和短语，正确运用现在完成时进行问答。

aims:

能通过观察课文插图来预测课文内容。

能听懂用现在完成时表达的对话。

能朗读和表演有关环保的对话。

能正确运用连读和停顿的技巧，使发音流畅，富有韵律感。

nal aims: (optional)

引导学生关注环境问题，树立绿色环保意识，增强忧患意识和社会责任感。

e awareness: (optional)

通过谈论环境问题，让学生了解不同种类的污染及其危害。

Ⅲ

. The key points and difficult points

1. Key points:

Words and phrases: pain, produce, awful, bear, harmful, chest, editor, breathe/breath,

soil

get

a pain in…, what’s worse, too much noise, too many problems,

breathing problem, be harmful to, make a mess of, throw…around

Sentences: It’s difficult for me to breathe.

I’ve got a pain in my throat.

It’s really awful.

A: How long have you been like this?

A: Have you seen a

doctor?

B: I’ve been like this since la

st week.

B: Not yet.

Grammar: Present Perfect

的问答。

2.

Difficult points

：

能在不同语境中，正确判断单词的不同词性。

在朗读中，能正确地把握连读和停顿的技巧。

Ⅳ

. Learning strategies

通过

1a

， 教会学生善于利用插图理解有关污染的对话。

通过

2< /p>

，训练学生在不同的语境中学会转换词性，并拓展学生的词汇量。

通过< /p>

3a

，引导学生通过观察图片分析和了解不同的信息。

通过

3b

，要求学生掌握连读，停顿的发音技巧，反思 自己的发音中的问题。

Ⅴ

. Teaching aids

单词卡片

（如：

breathe/ breath, pain, harmful/harm

）

；

关于污染的图片或者幻灯片；

录音机；小礼品若干等

Step1

Getting students ready for learning

（

2 mins)

1

、

Guide the Ss to discuss different kinds of pollution in groups and share the

answer together.

T: How many kinds of pollution do you know?

S1: Air pollution

S2: Water pollution

S3: Litter

S4...

Step2

Lead-in (5 min)

Let

the

Ss

look

at

the

pictures

in

3a

on

page

30

and

guess

the

meaning

and

pronunciation of “soil”. Ask them to pay attention to the types of pollution.

T: Look at these pictures, what kinds of pollution are these?

S1: Air pollution

S2: Water pollution

S3: Litter

S4: Light pollution

S5: Noise pollution

Step3

Pre-listening(5-7 mins)

Show the picture of soil pollution, teach the new words and check the answers of

3b. Pay attention to the pronunciation, liaison and pause while reading.

T: Look at this picture, what kind of pollution is this one?

(Lead the Ss to pronounce it.)

S6: Soil pollution.

T:

Right.

People

use

too

many

chemicals

in

their

fields,

/and

soil

pollution

causes

unhealthy food. The food is harmful to our health.

(Teacher write down the words and phrases on the Bb.)

T: Now try to fill in the blanks in 3b with the words and phrases in 3a.

…

T: Now let’

s check the answer.

S1: water pollution

S2: air pollution

S3: noise pollution

S4…

T:

OK,

let’

s

read

the

sentences

together.

Pay

attention

to

the

pronunciation,

liaison

and pause.

(Teacher can give an example if necessary)

Step4

While-listening(5-7 mins)

1: Show a picture of the polluted West Hill, let the Ss listen to 1a once and tick

the questions they hear in part A of 1b. Then check the answers together.

T: As we know, the West Hill has changed a lot. Look at this picture, what pollution

can you find in the picture?

Ss: Air pollution, water pollution, noise pollution…

T: Right. Whatever the pollution is, it is harmful to people’

s health. Mrs. Zhou gets a

pain in her chest because of the bad air. Now listen to the dialog between Kangkang

and Mrs. Zhou and tick the questions you hear to finish part A in 1b.

…

T: OK, let

’

s check the answer

s.

S1: What’

s wrong with you?

S2: How long have you been like this

？