Are these pens yours?不应该是Are these your pens?不懂.
问题描述：
Are these pens yours?不应该是Are these your pens?不懂.
答
Are these pens yours?的陈述句形式为These pens are yours.这些钢笔是你的.主语是These pens,系动词 是are.变为一般疑问句,系动词提前,为Are these pens yours?