在英语中，母亲的直接亲戚有如下几种称呼：

Mother's sister: Aunt
Mother's brother: Uncle
Mother's sister's husband: Uncle (by marriage)
Mother's brother's wife: Aunt (by marriage)
Mother's father: Grandfather
Mother's mother: Grandmother

例如：

My mother's sister is my aunt.
My mother's brother is my uncle.
My mother's sister's husband is my uncle (by marriage).
My mother's brother's wife is my aunt (by marriage).
My mother's father is my grandfather.
My mother's mother is my grandmother.

希望这能帮到你！