谁告诉我下面这些单词的复数形式mother this that sister brother parent
网友回答
mother sister brother parent ,这几个词,变复数直接加s
this复数 these that 复数those
======以下答案可供参考======
供参考答案1:
mother these there sister brother parents
供参考答案2:
mothers，these,thoes,sisters,brothers,parents
供参考答案3:
mothers these those sisters brother parents