关于英语中的half of和half

关于英语中的half of和half half与half of, 关于half of 的用法. 初二英语half of the class和half the class区别 关于half的英语问题 half students和half of the students有什么区别 half 关于half a pound of和a quarter of a pound of coffee half of them and a half half与half of的区别 a half 与half of 的区别? a quarter of pound of sugar,half pound of sugar,half怎么没有a 和o