人教版 (新课标)选修7&8Unit 3 Under the sea教学设计

Period 4　Using Language：Reading，Discussing and Writing

Teaching aims　　　　　

1．Learn to pronounce the names of sea creatures mentioned in the text correctly.

2．Learn to describe the creatures mentioned in the text properly according to the pictures with the expressions like：...＋looking，...＋shaped，...＋spotted，...＋like，...＋striped.

3．Learn to use the adjectives in the correct order to describe the pictures prepared by the teacher.

4．Learn to use proper expressions to convey their exact feelings in their past experiences.

Teaching procedures　　　　　

Step 1　Warming up and lead－in

First，show students the picture above and ask them some questions as a revision：

Where are they？What are they doing？Why do they go snorkelling?

Next，draw a conclusion and lead into the text：

As the sea is a world full of magic，many tourists head to the sea，and the author of this text is one of them.

Look！The other day，the writer went snorkelling with her friends and experienced a lot.Let's take a brief look at sea creatures through her diary.

Then，take a closer look at the photos she taken and describe them with what you can find in your textbook.

Pictures in the text in Using Language give the following information：

corals with vivid colors and shapes，elegant fishes，little orange and white fish，small cleaner fish，the yellow and green parrotfish with hard bird－like mouth，yellow－spotted red sea－slug and blue sea－stars and wise－looking turtles，eels with strong sharp teeth，giant clam with thick green lips，grey reef sharks about one and a half meters long，the edge of the reef with a sharp drop to the sandy ocean floor

Step 2　Fast reading

Read the passage and put the following topics into the correct order according to the text.

Step 3　Careful reading

Task 1：Read and choose the best answers.

1．Judging from the text，what the author mainly wants to tell us in the diary is ______.

A．that the sea is fantastic with vivid colors

B．that the water where she was snorkelling is not deep but shallow

C．what she saw and how she felt in the sea

D．that all the plants in the sea are poisonous

2．What was hanging upside down in the sea according to the text?

A．The orange and white fish.　　　　　　　B．The yellow－spotted red sea－slug.

C．The yellow and green parrotfish.  D．The blue sea－stars.

3．The author was afraid of getting too close to the eel because ______.

A．it has strong sharp teeth  B．it has thick green lips

C．it has a frightening shape  D．it gives out poisonous liquids

4．Which of the following sentences show that the author couldn't help feeling excited in the sea？______

A．My heart was beating wildly.

B．That didn't stop me from feeling scared to death.

C．Every cell in my body woke up.

D．I felt very exposed in such deep clear water.

5．We can infer from the text that the author felt that ______.

A．compared with the whole world，man is tiny

B．compared with the whole world，the ocean is tiny

C．there were more delights than dangers when snorkelling

D．there were more dangers than delights when snorkelling

Keys：CCACA

Task 2：Do Exercise 3 on Page 25.

Keys：1.warm night　2.the waving long thin　3.hard bird－like　4.a yellow－spotted red

5．a large wise－looking　6.strong sharp　7.thick green　8.two grey

Note the use of adjectives：

number—opinion—shape/size—age—color—place—material—noun

e．g.a cute little brown puppy 　two thick green spotted sea－stars

Task 3：Practice

1．Several ______ sharks.(a.large grey　b．grey large)

2．Some ______ whales.(a.giant blue　b．blue giant)

3．Scores of ______ turtles.(a.white－striped and grey　b．grey and white－striped)

4．Many a ______ seal.(a.black－spotted and light grey  b．light grey and black－spotted)

5．Many ______ anemone fish.(a.little orange and white　b．orange and white little)

6．Plenty of ______ angelfish.(a.orange and blue－striped　b．blue－striped and orange)

7．A number of ______ corals.(a.huge colorful　b．colorful huge)

Keys：aabbaaa

Step 4　Discussing and speaking

Suppose an aquarium is being designed in our city.As the two main directors of the aquarium，you and your partner are talking about what sea creatures should be brought in.

Example：

A：Since the aquarium will be opened soon，the varieties of sea creatures require discussing now.What about putting a number of huge colorful corals in it?

B：Can't agree more！I'm considering bringing in several large grey reef sharks as people are all looking forward to seeing them.

A：It's great！Do you mind our buying scores of grey and white－striped turtles?

B：Not at all！I'm also thinking of getting some little sea creatures.

A：You are right.It's good having some orange and blue－striped angelfish as they are that lovely.

B：All in all，we may bring in as many sea creatures as possible because people can't stand being cheated as they spend much money buying the tickets.

Step 5　Learning phrases and sentences

Useful phrases：

reflect on the day 回忆当天的事情

a day of pure magic 神奇的一天

go snorkelling 潜泳

extraordinary beauty 奇妙的美景

all kinds of small，neat and elegant fish 种类繁多、小巧整齐、姿态优雅的鱼

explore small caves 探索小石洞

narrow passages 狭窄的通道

hang upside down 倒挂着

a yellow－spotted red sea－slug 带着黄斑点的红色海蛞蝓

a large wise－looking turtle 一只长相聪慧的大乌龟

look straight at me 直直地盯着我

sharp teeth 利齿

a tasty fish 一条美味的鱼

the giant clam half buried in some coral 一个巨大的蛤蚌半掩在珊瑚礁中

thick green lips 宽厚的绿嘴唇

two grey reef sharks 两条灰色的珊瑚鲨

appear from behind some coral 从珊瑚后面出来

feel scared to death 吓得要命

swim over the edge of the reef 游过珊瑚礁的边沿

look down into the depths of the ocean 往下看海底

Beautiful sentences：

I'm sitting in the warm night air with a cold drink in my hand and reflecting on the day—a day of pure magic!

...it was the most fantastic thing I have ever done.

It was like discovering a whole new dimension of life.

...every cell in my body woke up.

The first thing I became aware of was all the vivid colours surrounding me...

...they were shaped like fans...

...I could have touched it.

My heart was beating wildly—I felt very exposed in such deep clear water.

What a wonderful，limitless world it was down there!

And what a tiny spot I was in this enormous world!

Step 6　Homework

Give a written introduction to the aquarium to be opened.The introduction should include the following aspects.