Sing a song Old MacDonald Has a Farm,farm,Unit 3 Numbers and AnimalsPart A,Listen and follow （P16）,cow,horse,sheep,How many cows do they have? How many horses do they have? How many sheep do they have? How many pigs do they have?,单复数同形,How many cows do they have?,They have thirteen cows .,13,How many horses do they have?,They have fourteen horses .,14,How many sheep do they have?,They have fifteen sheep .,15,How many pigs do they have?,They have sixteen pigs .,16,thirteen fourteen fifteen sixteen,teen 是后缀，表示“十”，构成从1319英文数字的一部分,three four five six,thirteen fourteen fifteen sixteen,cows,horses,sheep,pigs,Look and say P17,I have,语音教学 ee,