名词变复数规则

(1)．一般情况下，直接加-s，如：book-books, bag-bags, cat-cats, bed-beds(2)．以s. x. sh. ch末端，加-es，如：bus-buses, box-boxes, brush-brushes, watch-watches(3)．以"辅音字母+y"末端，变y为i, 再加-es，如：family-families, strawberry-strawberries(4)．以"f或fe"末端，变f或fe为v, 再加-es，如：knife-knives(5)不规则名词复数：man ---men, woman---women, policeman---policemen, policewoman---policewomen, mouse---mice child---children foot---feet,.tooth---teeth fish---fish, people---people, Chinese---Chinese, Japanese---Japanese1. 主格一般用在句中作为主语，一般用在动词前（除疑问句）2. 宾格多用于动词介词后面。3. 形容词性物主代词后面必须要跟名词。4. 名次性物主代词＝形容词性物主代词+名词。

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