一、 教学目标与要求
1.知识与能力目标
知识目标：
能够听说的单词和短语：difficult, choose, screen
能够听说认读的单词和短语： perfect,powerful,computer game,能够听说读写的单词和短语： beautiful expensive cheap purple
能听说读的句子：
This one is perfect. It’s small and powerful.
能听说读写的句子：
This computer is beautiful. It’s purple. It’s small.
And it’s cheap.
能力目标：
通过多种活动，培养学生综合语言运用能力和观察判断能力。通过学习语言知识，培养学生对于知识的迁移能力和发散思维的能力。
2.情感态度目标
培养学生的审美能力以及勤俭节约的优良品质。
二、 教学重点及难点
本单元重点学习的是用形容词来形容物品。主要句型是：This …is…. 以及It’s…. 让学生学会用形容词描述事物.本单元的难点是如何让学生准确地用形容词来形容物品。
三、课前准备
电脑多媒体，录音机，单词卡片以及各种与教学内容相关的实物。
四、教学过程
Step 1 Warm up and review.
T leads the Ss to review the adjectives by the game “I say, you say the opposite and do it”
E.g.: T: Long (伸展双手，做出long的样子)
S: short (伸展双手，做出short的样子)
(Long-short old-new big-small tall-short )
在学生对形容词有了直观的感知和回顾之后引领学生复习颜色，对下面的学习做好铺垫。
T: What color is it? (Point to the desk)
Ss: It’s yellow.
T: Yes, it’s black. This desk is yellow.
(渗透This ……is ……句型，为新授做好准备)
T: Now let’s find out the colors in the classroom.
Ss: Black. (Point to the board)
T: Yes,(引领学生一起说)This board is black.
(板书This ……is ……，强调this 大写)
Ss: Red. (Point to the flower)
T: Yes,(引领学生一起说)This flower is red
Ss:……
Step 2 lead in and presentation
联系上一环节，T拿出一本书来，问“What color is it?”
Ss: Green. (Point to the book)
T: Yes. This book is green. I bought it yesterday. It’s 1 yuan. So it’s very cheap. (板书cheap, 并渗透语音和拼写)
This book is only 1yuan. So this book is cheap.
然后教师出示投影仪上的图片（紫色的长铅笔，标价0.2元）
T: Is it cheap?
Ss: Yes, this pencil is cheap.
教师引导学生说出铅笔的其他特征
S1: This pencil is new.
S2: This pencil is long.
S3: This pencil is … .
(T 教授新词purple用Perfect进行评价，然学生感知perfect的含义)
T: What about this one?
出示另一张图片，上面有一黑白相间形状小巧的MP4,但无标价.
S1: This MP4 is black.
S2: This MP4 is …..
S3: This MP4 is … .
教师出示标价，1200元
T: It’s 1200 yuan. Is it cheap?
Ss: No, it isn’t.
T: It isn’t cheap. It’s expensive. (把expensive板书，领读，操练)
教师出示两张电视的图片。(green and blue)
T: Guess, which one is cheap? Which one is expensive?
让认为绿色电视便宜的同学起立。
Ss: (point to the green TV)This TV is cheap, (point to the blue TV) and this TV is expensive.
让认为蓝色电视便宜的同学起立。
Ss: (point to the blue TV) This TV is cheap, (point to the green TV) and this TV is expensive.
Step 3
T: Look ,I have a cell phone (出示实物).
Who can tell me what it looks like?
Ss: This phone is small.
This phone is new.
T: Yes, This phone is small, and it’s new.
(板书，操练)
T: It also can be used as music player, camera, radio, counter, etc. (展示给学生看，帮助他们理解)
It can do so many things, so it’s powerful.。l (板书powerful并领读操练)
Do you think it’s beautiful?
Ss: Yes, it’s beautiful(板书beautiful并领读操练)
Step 4
出示两台电脑，形状颜色不同，价钱分别为1200元和8999元。电脑旁标明了电脑的属性（powerful, good for computer games, etc）
学生小组竞赛，说明你喜欢的是哪一台电脑，并说明理由，看那个小组学生描述这两幅图片描述的句子最多。
句型参照黑板I like this one ,This …is … .It’s … .
Step 5
T: Sam 一家也去买电脑， 他们会选什么样的电脑呢？
带着问题听录音，找出答案。
Qs: Which computer will they choose?
A: purple and beautiful
B: expensive but good for computer games.
C: small and powerful
打开书，听并跟读，注意模仿。
Step 6
教师拿出一个玩具，
用This …is…It’s … .进行描述。
让学生拿出自己的东西四人小组进行描述。
Step 7
小结与作业
由学生对本课所学内容进行梳理和汇总，让他们自主地在小结时思考和整理本课的所学与所得。
Homework:
1. Listen and repeat the dialogue 2 times.
2. Describe something around you. (5 sentences)