妈妈过生日那天,家里来了很多客人,非常热闹。我想:妈妈过生日,我要勤快点,不能让妈妈太劳累。于是,我主动问妈妈:“有什么需要我帮忙的吗?”妈妈说:“准备得差不多了,你把碗拿到桌上摆好。一共有12个人,每人1个饭碗,2个人合用1个菜碗,3个人合用1个汤碗。”我急忙问:“那一共需要多少个碗呢?”妈妈笑着说:“你自己算一算吧。”我认真地思考:一共有12个人,每人1个饭碗, Mom’s birthday, the family came a lot of guests, very lively. I think: Mom birthday, I want diligently, can not let mother too tired. So, I take the initiative to ask her mother: “What do you need me to help it?” “Mom said: ” Preparation is almost the same, you put the bowl on the table, a total of 12 individuals, 1 per person, 2 Personal combination of a vegetable bowl, 3 combination of a soup bowl. “I hurriedly asked: ” How many bowls do you need? “Mom said with a smile: ” Serious thinking: a total of 12 individuals, one for each job,