stomach－stomachs radio - radios, photo - photos, piano - pianos
bamboo - bamboos, zoo - zoos
a German－three Germans, an American－two Americans
man servant－men servants; woman doctor－women doctors;
man cook - men cooks; woman singer - women singers
papers 报纸, 文件manners礼貌　 goods货物 works　工厂, 著作
looks　外表　 glasses　眼镜 greens青菜 hairs几根头发　
times　时代 　　sands 沙滩, 沙地　 irons脚镣手铐 drinks饮料
forces 军队 spirits 酒精, 情绪
keep(break) one's word 守(失)信 leave word 留言
a man of his word 有信用的人 in a word 简言之
word for(by) word 逐字地 upon my word 说实在话
eat one words 收回前言, 认错 in other words 换句话说
the last words 临终的话 waste one's words 白费口舌
have words with 与某人吵嘴
have a few words (a word) with 与某人说几句话
a friend of my father's; a few friends of Liming's ;
that book of Liming's; two friends of my brother's
1)主语形式虽为单数, 但意义为复数, 谓语动词用复数。例如:
The crowd were running for their lives．
单数形式代表复数内容的词有:people, police , cattle, militia(民兵)等。
2)主语形式为复数, 而意义上却是单数, 谓语动词用单数。例如:
The news was very exciting．
形复意单的单词有news, works(工厂)和一些以ics结尾的学科名称,physics, politics, economics,mathematics等。
某些集体名词, 如people, police, cattle, militia 等, 只当复数看待, 谓语动词必须用复数。例如:The police are searching for him.
Five minutes is enough to do this exercise．
Each boy and each girl wants

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