1、名詞的復(fù)數(shù)變法,規(guī)則名詞復(fù)數(shù)形式的構(gòu)成及變化,可數(shù)名詞復(fù)數(shù)形式的不規(guī)則變化,man-men woman-women policewoman-policewomen policeman-policemen walkman-walkmans human-humans German-Germans foot-feet mouse-mice child-children ox-oxen tooth-teeth goose-geese Phenomenon-phenomena,單復(fù)數(shù)同形,Chinese fish sheep deer Japanese means Swiss series species 部分集合名詞即可作單數(shù)（整體），也可作復(fù)數(shù) （成員） family, class, group, public, union, team, audience, army, committee,復(fù)數(shù)形式單數(shù)概念,maths politics woods。