为什么“half of us” 中的of不能省略,不是可以说half an hours吗?

为什么“half of us” 中的of不能省略,不是可以说half an hours吗? half a cup of milk 为什么half要放在前面 half of +物主代词中的of可以省略么? many of us 和 several of us哪个对为什么 Being aware of your surroundings is only half of the equation.当中的equation、half of the equation是什麼意思? Six is half of ( ). half a kilo of half of the 关于英语中的half of和half这两句话相等吗?Half of the girls are here.=The half girls are here. all of us like our school 中的all of To save time,our teacher has ____ students do half of the exercise in class and complete the halffor homework.为什么用us不能用we? 为什么?我选的是cTo save class time,our teacher has _____students do half of the exercise in class and complete the other half for homework.a.us b.we c.our d.oursour students 为什么不行 翻译Surveys show that at least half of us believe intellgent life exists on other planets. surveys show that at lest half of us believe intelligent life exists on other planets翻译 half与half of的区别 a half 与half of 的区别? one of us是第三人称单数,为什么?“我们当中的一个” 如何理解第三人称单数? most of us为什么of后面不加the