英语句型单复数转化

题目

英语句型单复数转化
his birthday is january 18th ,and his father's birthday is too january 18th
my father don't konw Mr wu's phonenumber
(是单数化复数 ,是复数化单数）

答案

1,His birthday is January 18th ,and his father's birthday is january 18th too.
2,My father doesn't konw Mr.wu's phone number.