baby n. 婴儿；幼畜；雏鸟 baby-sitter n. 临时保姆
back n. 背部；背后；后部 At the back of the house there is a kitchen garden.
adv. 回原处，在原处 Now you can go back to your seat, Tom.
v.向后退 Attention, please. This car is backing up.
bad adj.(worse, worst) 坏的；讨厌的；质量低劣的
badly adv. (worse, worst)严重地，非常，很差
bag n.袋子 handbag 手提袋 schoolbag 书包
baggage n. luggage 行李（不可数名词） baggage Am.E luggage Br.E
bake v. cook in an oven 烘；烤 baker n. 面包师 bakery n. 面包店
balance n. & v. 平衡 n. 天平 n. 结余
ball n. 1.球；球状体 2. （正规的）大型舞会
