grandmother 是合成词吗（grandmother用法）

grandmother，是合成词，由grand+mother两个单词合成。

词根grand壮丽的，重大的，+词根-mother，妈妈，母亲。

n.(外)祖母;奶奶;外婆;

例句

When my parents were away, my grandmother would take care of me.

我父母外出的时候，总是祖母照看我。

变形

复数grandmothers