half the books还是half of the books?

half the books还是half of the books? half the books是单数还是复数 是in the half-time 还是on the half-time还是at the half-time half of the books 做主语是单数还是复数请说明仔细一点. 是in the half-time 还是on the half-time 还是at 他和half time half Half half half the food是复数还是单数 一半的警察翻译：half of policemen还是half of the policemen还是half of the police? Half the angel,half the devil a half hour还是half an hour? a half apples还是a half apple 是half hour还是half an hour? a half mile 还是half a mile half 加名词单数还是复数比如 一半的青少年 half the +teenagers还是teenager 英文中一般用pay half the price 还是用offer half the price 为什么? Good start is the half of success 还是Good start is half the success