他的女儿需要一件紫色的毛衣用英文怎么说

用英语说，"His daughter needs a purple sweater."

"Sweater" 是一种针织衫，是英语中常用来描述厚衣服的词汇。这个词源自中世纪英译拉丁语"excapare"，最初用来形容一种手工制作的粗针织衫。

例句：

"She put on her purple sweater before heading out in the cold." (她穿上她的紫色毛衣，在寒冷的天气里出门。)
"He gave his daughter a new purple sweater for her birthday." (他给了他女儿一件新的紫色毛衣作为她生日礼物。)
"She loves to wear her favorite purple sweater when it's chilly outside." (当外面有点冷时，她喜欢穿她最喜欢的紫色毛衣。)