There was no classes yesterday.把class当做一个整体,用was吗?class是集体名词

I was late for class yesterday __________ there was somethin there was a chess c____ in our class yesterday afternoon 用jim,class,late,yesterday,for,was,拼成一句话 Last Monday ,there was an interesting class meeting in Class 49.You should have told me there was no class today.I —all t was class late lilei for yesterday 连词成句 怎样判断一个集体名词（如class,family）在句中指整体还是各个成员?谓语的单复数没法判断啊…… We have no (class/classes) on Sundays. She was late for class yesterday.（用tomorrow改写句子） Bob was late for class yesterday改为同义句Bob__ __for class yeste 集体名词的用法people是集体名词吗?它是当复数名词用的吧?那么class,family,也当复数用吗?我在课本上看到 the reason （ ）he was late yesterday for class was ( )his mot