crowd什麼時候做單數什麼時候是複數

crowd什麼時候做單數什麼時候是複數

當強調人群中每個人接踵而行時,crowd做複數.eg.Thecrowd were walking to the square.
當強調人流、人群(擁擠)時,crowd作單數eg.Therewas a crowd of people in front of the town hall.