he dug a hole ,a second one and a third one 求句子翻译,为什么不是the s

he dug a hole ,a second one and a third one 求句子翻译,为什么不是the s a third one和the second he dug a hole (plant)a tree He dug a hole in the ground____his bare hands 填空 a second one 和 the second one~分别怎么翻译 a hole dug in the ground one ...another...a third...还是the third a second one,another one ,the second one 的区别 This is a third of a pizza.这里为什么不是one third of a pizza one and a third billion是什么意思? The old farmer dug a hole two feet one-second 还有two-third又是什么意思?有a half of the children 这种说法吗