previous和beforehand还有in advance的区别及用法?说错了，是previously和beforehand还有in advance的区别及用法？

previous和beforehand还有in advance的区别及用法?说错了，是previously和beforehand还有in advance的区别及用法？ beforehand和in advance 的区别? a little beforehand中的little和beforehand分别都是什么词性? previous previous previously和beforehand还有in advance的区别及用法? 词汇辨析-beforehand和previously,ahead的区别 former 和 previous 的区别 previous和former有哪些区别? previous和prior有什么区别? previous year和last year的区别 He said that he read this book two days __A____ examination.A.previous to B.in advance C.beforehand D.ahead请高手讲下以下4个词的意思,再讲下,为什么要选A,我将感激不尽! former和previous officer和official这两族词语的区别 in advance beforehand previously区别 previous to Previous是什么意思? previous cargos previous pregnancy