A and B是单数还是复数

A and B是单数还是复数 A and B 算复数还是单数 跟动词的单数形式还是复数形式? one apple and a half是复数还是单数? one cake and a half 谓语是单数还是复数 worker and writer是复数还是单数 英语and的用法A（复数）and B（单数）后面接is还是are a dozen eggs 是复数还是单数 no A and no B 做主语,谓语动词用单数还是复数? a knife and a fork 动词用单数还是复数 a girl and a boy谓语用单数还是复数 one hour and a half 的谓语是单数还是复数,one and a half hours 的谓语是单数还是复数我们老师说第一个是复数,第二个是单数, 主语是a boy and a girl,谓语动词用单数还是复数如题 a knife and fork 后面接单数还是复数 one and a half 后面加名词单数还是复数? one and a half apples 作主语时谓语动词到底是单数还是复数 one hour and a half 后面是复数谓语还是单数谓语 A boy and his classmate后面是用单数还是复数,需要就近原则吗? every boys and girls是单数还是复数?