A
mine是I第一人称单数的名词性物主代词,they're mine 相当于they're my umbrellas。
your和her 分别是第二人称和第三人称的形容词性物主代词,后面必须加一个成分才能表达需要的意思,如“your umbrellas”“her umbrellas”
复数they,them,their,theirs
主格:I,you,he,she,it,we,you,they
宾格:me,you,him,her,it,us,you,them
形容词性物主代词:my,your,his,hers,its,ours,theirs
名词性物主代词:mine,yours,his,hers,its,ours,theirs
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