You're not fit to be a mother!

你不适合做母亲！

《柯林斯英汉双解大词典》

Be a mother to him, forgive him.

作为他的母亲，原谅他吧。

youdao

No other mom could be a mother like you are.

没有别的母亲能像您这样。

youdao

It wasn't something a young wife should see, especially a young wife who would soon be a mother herself.

VOA: special.2010.01.09

So, you would expect a child who just grew up with a mother or just grew up to be a father--with a father to be in some sense psychologically damaged by that, failing to go through the normal psychosexual stages.

你会看到由单身母亲抚养长大的孩子,或由单身父亲抚养长大的孩子,在某种意义上,会因此而形成心理创伤，从而无法正常地经历所有的性心理阶段。

耶鲁公开课 - 心理学导论课程节选

It might be like a single, a single mother, you know. She might not get home from work until like 6.

也有可能是个单亲母亲。她下班到家可能要6点之后了。

哈莱姆的变迁 - SpeakingMax英语口语达人

She also found time to be a mother of four and was a role model to millions.

CNN: From an empress to a florist: Five unsung heroines

I'm in charge of raising a young woman one day, to be a mother and hopefully a wife.

CNN: T-Boz brings reality to TV

Mr. NAYDER: This is I Want To Be A Mother, the title track from the Mormon Kids Sing album.

NPR: Annoying Mother's Day Music