The ordinal number matching the number19 in a series 第十九在数列中与数字19相配的序数词
The ordinal number matching the number90 in a series 第九十在数列中与数字90相配的序数词
The ordinal number matching the number nine in a series 第九在数列中与数字9相配的序数词
The ordinal number matching the number14 in a series 第十四一序数词,一系列数中的第十四个
Know the difference between ordinal numbers and cardinal numbers 对比基数词和序数词的不同
Know how to distinguish and use ordinal numbers and cardinal numbers 掌握基数词和序数词的用法。
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。 )