海伦妈妈的毛衣英文怎么说

在英语中，海伦妈妈的毛衣可以用 "Helen's mom's sweater" 来表示。

"Helen" 是海伦的名字，"mom" 是母亲的意思，"sweater" 是毛衣的意思。这种表达方式可以准确地描述海伦妈妈的毛衣，告诉读者或听众这件衣服属于海伦的母亲。

下面是几个例句，希望对您有帮助：

"Helen's mom gave her the sweater as a birthday present." (海伦妈妈在海伦生日时送给她这件毛衣。)
"Helen tried on her mom's sweater and it was too big for her." (海伦试穿了海伦妈妈的毛衣，但是太大了。)
"Helen's mom's sweater is made of soft wool." (海伦妈妈的毛衣是用柔软的羊毛做的。)