主格做主语,放在陈述句句首 i am he has... 宾格作宾语,放在动词或者介词后面 help me look after them 形容词性物主代词,必须加名词,例如 my name his book 名词性无助代词=形容词性物主代词+名词 例如 it's mine theirs are new 不需要再加名词了。
第2个回答 2019-11-15
my My book is mine. your Your book is yours. his His book is his. her Her book is hers. its Its book is its. our Our books are ours. their Their books are theirs.