Unit 4 How old are you,Sing a song,one,two,three,four,five,six,seven,eight,nine,ten,one,two,three,four,five,six,seven,eight,nine,ten,本单元主要单词,one 一 nine 九 boy男孩 two 二 ten 十 she她 three 三 old 老的；旧的 four 四 how old 多大年龄 five五 girl 女孩 six六 the 这；那（定冠词） seven七 baby 婴儿 eight八 birthday生日,Lets guess,How old is Nick,Nick is years old,six,How old is Mike,Mike is years old,nine,How old is Kate,Kate is years old,ten,How old is the baby,The baby is year old,baby,one,How old is the girl,The girl is years old,gi
