T says:Oh,my bag is broken, Lingling's bag is broken ,too.Lingling will be back to China .Ms Smart to buy a new bag for her.What colour is it ? Is it big or small?(通过本课的学习，我们要如何描述事物的特征)

（设计意图: 用实物形象直观，学生更容易理解新单词,）

StepⅢ New structures learning

1、 Listen to the tape and answer two questions:

(1)、What colour is it?

(2)、Is it big or small?

2、Listen again.（分段播放）Underline"light、heavy、poket、broken"

师板书重点句:This black bag is nice.It's big.

This blue one is big and light.It'll be easy for her.

3、教师分段播放录音，学生跟读。 （设计意图: 让学生听录音初步了解课文内容。教师向学生讲解"We'll take it ,please."中take的意思为buy。）

教师向学生讲解"We'll take it ,please."中take的意思为buy。

4、 Practice these sentences.

5、 Listen and repeat.

Read the text in pairs.(让学生找出不理解的单词或句子，教师加以讲解)