for a while和in a while有什么区别?

for a while和in a while有什么区别? after a while,in a while ,for a short while的区别和用法 英语语法：in a while 和 for a while 的区别是什么 I haven't seen him in(for)a while. for a while 和 after a while 和once in a while 和 all the while的意思 和区别（求详解） for a while 和 in a while的区别我想问下.for a little while 和 in a little while一样么?还有.in the school 和 at school 有什么不同. 问下for a while,in a while,after a while,all the for a while和after a while的区别 in a while一般用于句首、句中还是句末?还有after a while和for a while 呢? for a while for a while 和 for a moment 有区别吗 英语翻译Avril Lavigne is a girl who knows what she wants.And when it came to writing her eagerly awaited third album,The Best Damn Thing,she had one very clear goal in mind:To make it fun.While touring in 2004 for her last album,Under My Skin,whi 英语翻译Avril Lavigne is a girl who knows what she wants.And when it came to writing her eagerly awaited third album,The Best Damn Thing,she had one very clear goal in mind:To make it fun.While touring in 2004 for her last album,Under My Skin,whi once in a while in a while是什么意思 in a little while I smoked only once in a while and for run. he usually goes out for a walk( )he usually goes out for a walk( )A in a few while B for a little while C in a little while D for few while for a while的词性