a crowd of加可数么,一群,许多两种意思用法一样么

a crowd of加可数么,一群,许多两种意思用法一样么 a crowd 是许多还是一群 那么a BIG crowd 类似于a group of的表示“一大群,许多.”的词组,并写出它们后面加（不）可数名词,单数啊,复数啊rte.g.a number of+可数名词复数（只可以加可数名词复数） 英语的群体量词为什么比汉语丰富?一群青年妇女 a bevy of young woman一群商人 a company of merchant一群人 a crew of people,a crowd of people一群访问者 a flock of visitors一群鸟 a cloud of birds一群蚂蚁 an army of b a crowd of people 这个短语中crowd是什么词性 请问a large crowd of people had gathered under the Town Hall为什么加had a number of和the number of都是加可数名词复数么?可以加不可数名词么? a number of后加可数名词复数还是单数 a kind of 后加可数还是不可数名词 A number of后面加可数 还是不可数的 a large amount of加可数名词还是不可数名词 a myriad of加可数名词还是复数名词 A great deal of是否可加可数名词 a bit of后加可数名词还是不可数名词 a flood of后面能否加可数名词? A great deal of是否可加可数名词 a bit of 后面加可数名词马? a bit of后面加可数名词还是不可数名词