The girl is in a green hat.She is my sister.(合并为一句）明天交的,好的给分
问题描述：
The girl is in a green hat.She is my sister.(合并为一句）明天交的,好的给分
答
The girl in a green hat is my sister.或The girl who is in a green hat is my sister.
答
The girl who is in a green hat is my sister.
不明白的再问哟,请及时采纳,多谢!