when's your sister birthday?it's in sunday改错
问题描述：
when's your sister birthday?it's in sunday改错
答
答案：将后面的in 改成 on
具体某一天，要用on，不能用in
答
when's 好像不可以缩写吧。。
your sister's birthday 所属，你姐的生日，现在没有“的”
on sunday...在某天，用on；在某月，用in...
答
是不是 in 也得改啦？去掉？
答
正确的句子是：
When is your sister's birthday ?
It's on Sunday .
答
when's your sister birthday?it's in sunday改错
when's your sister's birthday?it's on sunday.