Know the difference between ordinal numbers and cardinal numbers 对比基数词和序数词的不同
2.
Know how to distinguish and use ordinal numbers and cardinal numbers 掌握基数词和序数词的用法。
3.
Once upon a time 用在基数词前表示一个数量单位
4.
Three hundred and forty - five 基数词写法和读法
5.
Now look at the numbers carefully ， try to find out the changing rules . please pay attention to the colorful words and letters （让他们注意观察彩色单词和字母，找出基数词变序数词的规律，允许他们用中文说。 ）
