英语翻译：她是我祖父的继母，但是他对待我的祖父视如己出

1.She was my grandfather's stepmother, but he treated my grandfather as her son.
2.Though she was my grandfather's stepmother, he treated my grandfather as her own.
3.She was my grandfather's stepmother, but he cherished my grandfather as her own.
4.She was my grandfather's stepmother, but he raised my grandfather as her own.

我来试下：

Though she is only my grandpa 's step mother, she treat him as her own child.

She is my grandfather's stepmother, but he treats me like their grandfather

楼上翻得已经很好了，我再加工下～
Though she is my grandpa 's step mother, she treats him as her own child.