1
sb's stepmother
stepmother 指父亲再婚的妻子，与 mother-in-law（岳母/婆婆）不同。
Her stepmother is a doctor.
她的继母是一名医生。
继母
先理解核心含义，再看它在真实句子里的用法。
继母
the wife of your father by a subsequent marriage
Her stepmother is a doctor.
她的继母是一名医生。
父母离婚或分居后,或生母去世后,父方再婚或再同居的女性伴侣。
A woman who is a subsequent wife or partner of a person's parent, usually following the divorce or separation of their parents, or the death of one's biological mother.
父亲再婚后的妻子
the wife of your father by a subsequent marriage
(女同性恋伴侣中)非生母的另一方母亲。
Synonym of co-mother (“the non-birth mother of a child in a lesbian couple”).
My stepmother treats me like her own daughter.
我的继母待我像亲生女儿一样。
He introduced his stepmother to the whole class.
他把他的继母介绍给了全班同学。
Some children live with their stepmothers after their parents remarry.
有些孩子在父母再婚后和继母一起生活。
stepmother 指父亲再婚的妻子，与 mother-in-law（岳母/婆婆）不同。
Her stepmother is a doctor.
她的继母是一名医生。
become 后接名词，表示成为某人的继母。
She became my stepmother when I was six.
我六岁时她成了我的继母。
可以用 to 引出继母所面对的人，强调与对方的关系。
She has been a loving stepmother to his children.
她一直是他孩子们慈爱的继母。
Not this
She is stepmother.
Use this
She is my stepmother.
stepmother 是可数普通名词，作表语时不能没有限定词。中文的“她是继母”在英语里要说 She is my stepmother，用物主代词 my 来指明关系。
Not this
My father's new wife is my mother-in-law.
Use this
My father's new wife is my stepmother.
mother-in-law 指配偶的母亲（岳母/婆婆），不是继母；父亲再婚的妻子应称为 stepmother。用 mother-in-law 会混淆两种家庭关系。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
恶毒的继母
The fairy tale begins with a wicked stepmother who is jealous of her stepdaughter.
这个童话的开头是一个嫉妒继女的恶毒继母。
成为继母；当继母
She became a stepmother to two children when she married their father.
她嫁给了两个孩子的父亲，成为了他们的继母。
继母般的人物
After her father remarried, her kind neighbor became a stepmother figure to her.
她父亲再婚后，那位好心的邻居成了她继母般的人物。
慈爱的继母
She is a loving stepmother to her husband's children.
她是丈夫孩子们慈爱的继母。
Use stepmother naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
step是“步”，父亲再婚“步入”新婚姻，带来的这位母亲就是继母。
语域：neutral 常见场景：日常家庭交谈、正式表格或法律文书、文学叙述 “stepmother”是中性词，通常用于日常交谈，也可用于正式表格或书面叙述，没有明显的正式或非正式色彩。
重音在 step- 上，因此严格说 stepmother 与 mother、brother 等并不整词押韵；但它们的词尾 -mother 拼写和读音相同。拼写相似的 grandmother、stepfather 重音也在前一部分，读音与 stepmother 不同。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.