in advance=?ahead of=?hold on=?go on=?

in advance=?ahead of=?hold on=?go on=? in advance 和ahead of schedule的区别 ahead of和 in advance的区别和用法 ahead of time 与 time in advance有什么区别? in advance 和ahead区别 英语 in advance 和ahead of time .ahead of schedule.区别.请问他们之间的区别.举几个例子. in advance 与ahead of time 之间的区别.请附例句. in advance of 何意 ahead of,in spite of He drove fast and arrived an hour____ of schedule. A.in advance B.ahead C.abreast D.in front 请解释 ahead of date 和 date in advance区分如何区分呢,提前时间,两个都可以用还是有区别呢, ahead of time=( )( ) 翻译：In advance of an official announcement ■学英语学到cells增加Columbus was_____________his times in his belief that the Earth was round.A.in front of B.in advance ofC.beforeD.ahead of请问选什么,其他错误的理由是? ahead（of） 与in front of 有什么区别?辨析ahead,ahead of与in front of ahead of time ,与 time in advance 区分1.提前时间收到,翻译用哪个呢,或（有更好的词）2.这两个单词有语法错误吗.3.它们区分是什么,可以互换吗? 英语高手进,帮忙区分两个词的用法.employ和hire以及in advance和in ahead 的区别, in advance 中advance词性