如题所述
形式为单数,但意义可以用为单数或复数这类集合名词包括 ：
family(家庭）,team(队),class(班),audience(听众)等,
其用法特点为：若视为整体,表示单数意义；若考虑其个体成员,表示复数意义.比较并体会：
例句 His family is large.他的家是个大家庭.
His family are all waiting for him.他的一家人都在等他.
This class consists of 45 pupils.这个班由45个学生组成.
This class are reading English now.这个班的学生在读英语.
2形式为单数,但意义永远为复数这类集合名词包括：
cattle(牛,牲畜),people(人),police(警察)等,
其用法特点为：只有单数形式,但却表示复数意义,用作主语时谓语用复数；不与 a(n) 连用,但可与the连用
例句：People will laugh at you.人们会笑你的.
The police are looking for him.警察在找他.
Many cattle were killed for this.就因为这个原因宰了不少牲畜.
注：表示牲畜的头数,用单位词 head(单复数同形).如：five head of cattle 5头牛,fifty (head of ) cattle 50头牛
3形式为复数,意义也为复数这类集合名词包括 ：goods(货物),clothes(衣服)等,
其用法特点是：只有复数形式(当然也表示复数意义,用作主语时谓语也用复数),但通常不与数词连用.
如：Clothes dry slowly in the rainy season.衣服在雨季不易干.
Such clothes are very expensive.那样的衣服很贵.
If goods are not well made you should complain to the manufacturer.如果货物质量不好,则理应向制造商提出控诉.
4.形式为单数,意义也为单数这类集合名词包括 baggage / luggage(行李),clothing(衣服),furniture(家具),machinery(机器),poetry(诗),scenery(风景),jewelry(珠宝),equipment(设备)等,
其用法特点为：是不可数名词,只用单数形式,不用不定冠词(当然更不能用数词),没有复数形式.如：Our clothing protects us from [against] the cold.我们的衣服可以御寒.
Have you checked all your baggage?你所有的行李都托运了吗?
The thief stole all her jewelry.小偷把她所有的首饰都偷走了.
The hospital has no decent equipment.这家医院没有像样的设备.
The Tang Dynasty is thought of as the high summer of Chinese poetry.人们认为唐朝是中国诗歌的全盛时期.
注：machinery,poetry,jewelry,scenery等相应的个体可数名词是 machine,poem,jewel,scene等.如：a poem / a piece of poetry 一首诗many machines / much machinery / many pieces of machinery 许多机器
