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学习英语数字ten ~ thirty-one的表达方式，并能在实践活动中进行运用。
2. 教学难点：
1）在较为真实的购物情景下，能运用所学的语言知识进行购物交际活动。
2）掌握基数词的基本变化规律。
三、教学过程
Ⅰ. Warming- up and revision
1. Greet the Ss. Check the homework.
2. First let students repeat the numbers 0-9. Then have a free talk like this:
S1: How much is the hat?
S2: It is five dollars.
S1: How much are the socks?
S2: They're three dollars.
Ss ask and answer about all the clothes in pairs.
Ⅱ.Presentation
1、T shows numbers about lucky or unlucky. And then explains the numbers about lucky or unlucky in different countries.
2、T guides Ss to learn the numbers 0-9、10-31 ，and gets Ss to read these numbers after T.
3、Then point to some numbers and ask students to say them out. Ask students to finish writing the numbers individually.
3、Let Ss find out the rules of the numbers.
① 13~19 规律：个位数字后加 teen；注意：thirteen, fifteen, eighteen的差别。
② 21～29及31~39等数字的规律：twenty或thirty后加连字符，再加个位数
③ 20、30等表示几十的数，大部分构成形式为：个位数后加ty，注意twenty, thirty, fifty等。
Ⅲ. Exercises
1、T gets Ss to translate some chinese phrases into English phrases.
2、T guides Ss to solve some math questions.
Ⅳ. Listening
T: Next you will hear a mother and a daughter talking about buying clothes. First listen and circle the numbers you hear in 1a.
Play the recording for the first time, Ss only listen. Then play the recording again. This time Ss listen and circle the numbers they hear.
1. Let Ss look at the picture in 1d. Kate and her mother are talking about some clothes. Ask one student to name the various items of clothing shown. Ask another to point at the price tags and read them aloud.
2. Now let's listen to the recording again and check the thing Kate buys.
(Play the recording for the Ss to listen and check the answers.)