Unit8 Who is the first（课件）剑桥国际少儿英语二级下册

Unit8 Who is the first? 单元学习 1．Listen and circle. How many balloons can you see? I can see five balloons. How many apples can you see? I can see three apples. How many books can you see? I can see ten books. How many kangaroos can you see? I can see four kangaroos. How many cars can you see? I can see eight cars. How many cars can you see? I can see fifteen cars. How many peaches can you see? I can see nine peaches. How many kites can you see? I can see six kites. 快速说一说 15 9 22 20 12 19 5 25 16 11 3 13 zero one two three four five six seven eight nine zero first second third fourth fifth sixth seventh eighth ninth He is the first. He is the second. He is the third. 2．Look and say. Who is the first, the second and the third? 3．Let’s sing and point. This is the first. This is the second. This is the third. This is the fourth. This is the fifth. This is the sixth. This is the seventh. This is the eighth. This is the ninth. This is the tenth. 表示次序的数词叫序数词，是由基数词变化而来的。 基数词 序数词 one first 1st two second 2nd three third 3rd 其余的序数词是由基数词后加-th 变化而来。 缩写 几个特殊变化的序数词 基数词 序数词 缩写 five fifth 5th twelve twelfth 12th eight eighth 8th nine ninth 9th 整十的序数词把 y 变成 i加-eth 基数词 序数词 缩写 twenty twentieth 20th thirty thirtieth 30th forty fortieth 40th fifty fiftieth 50th 你能写出 sixty seventy eighty ninety 的序数词吗？ first second third Tom Peter Sam Who is the first？ Liu Xiang is the first. 基数变序数口诀： 第一、二、三要全变， （即 first ，second ，third 没有规律，需死记硬背） 其它th 加后边， （基本规律是在词尾加th） 加th 时有例外， 你需格外记明白： 八减 t ， (eight-eighth) 九去 e ， (nine-ninth) 字母f 代 ve ， (five-fifth, twelve-twelfth) ty 变成tie ， (即以ty结尾的整十数把ty变成tie：twenty-twentieth,thirt