如何让区分our、ours、us、mine、my、yours? 另外,主格、宾格是什么答:my pen 可以用mine代替,your teacher可以用yours 代替。比如:These are our books. =These books are ours.This is my pen.= This pen is mine.主格是指用作主词的代词,比如:I, you, he, she, they, we...宾格是指用作宾语的代词,对应上面的:me, you, him, her, them, us ...