很多很多,列舉如下：
名詞復(fù)數(shù)的不規(guī)則變化
1)child---children foot---feet tooth---teeth mouse---mice man---men woman---women
注意：與 man 和 woman構(gòu)成的合成詞,其復(fù)數(shù)形式也是 -men 和-women.
如：an Englishman,two Englishmen.但German不是合成詞,故復(fù)數(shù)形式為Germans；Bowman是姓,其復(fù)數(shù)是the Bowmans.
2)單復(fù)同形　如：deer,sheep fish,Chinese,Japanese li,jin,yuan,two li,three mu,four jin
但除人民幣元、角、分外,美元、英鎊、法郎等都有復(fù)數(shù)形式.如:a dollar,two dollars; a meter,two meters
3)集體名詞,以單數(shù)形式出現(xiàn),但實(shí)為復(fù)數(shù).
如：people　police　cattle 等本身就是復(fù)數(shù),不能說(shuō) a people,a police,a cattle,但可以說(shuō)a person,a policeman,a head of cattle,the English,the British ,the French,
the Chinese,the Japanese,the Swiss 等名詞,表示國(guó)民總稱時(shí),作復(fù)數(shù)用.
如:The Chinese are industries and brave.中國(guó)人民是勤勞勇敢的.
4)以s結(jié)尾,仍為單數(shù)的名詞,如：
a.maths,politics,physics等學(xué)科名詞,為不可數(shù)名詞,是單數(shù).
b.news 是不可數(shù)名詞.
c.the United States,the United Nations 應(yīng)視為單數(shù).
The United Nations was organized in 1945.聯(lián)合國(guó)是1945年組建起來(lái)的.
d.以復(fù)數(shù)形式出現(xiàn)的書名,劇名,報(bào)紙,雜志名,也可視為單數(shù).
"The Arabian Nights" is a very interesting story-book.是一本非常有趣的故事書.
5) 表示由兩部分構(gòu)成的東西,如：glasses (眼鏡)　trousers,　clothes等若表達(dá)具體數(shù)目,要借助數(shù)量詞 pair(對(duì),雙);　suit(套); a pair of glasses; two pairs of trousers
6) 另外還有一些名詞,其復(fù)數(shù)形式有時(shí)可表示特別意思,如：goods貨物,waters水域,fishes（各種）魚