for some reason it cold not be used then这里面最后一个单词then是什么意思啊?

but for some reason it could not be used then.but for some reason请问在句中作什么成份? “There must be some reason for it”中的“for it”有什么用? but for some reason it could not be used then 这里的then是为了接下句吗还是怎么回事 for some reason it cold not be used then这里面最后一个单词then是什么意思啊? for some reason 的用法正确吗?新概念第二册Lesson21的课文上有这样一句话:The airport was built years ago,but for some reason it could not be used then.很奇怪for some reason的用法,reason不是可数名词吗,为什么不加s, It's for this reason _ the sky was so blueA for which B why C that答案c 为什么 He didn't attend the meeting for ___ reason. A.a certain B.different C.many D.a some for some reason造4个句子要求有翻译 课文中有but for some reason..reason不是可数名词吗? the reason for it is还是the reason for this is? for some reason ,i keep thinking it's friday today..不知为什么,我总觉得今天是周五这是同位语从句吗 matthew___to an important position,but he gave it up for some reason.为什么用could have been promoted .而不用should have been promoted. 定语从句中的谓语动词I met some one who said he know you.I like the music for the very reason that he dislike it. The airport was built during the war,but for some reason it could not be used then.后面是不是then,为加它,不加行不行? but for some reason it could not be used then.请问use在句中是use+ed的形式吗?如何翻译这个词? It's for that reason that reason这里的for能否换成it's because of that reason谢谢，但是that reason也是短语啊？原句是it's for that reason that the language of the USA is english It's all there for a reason中文意思 Ellen was a painter of birds and of nature,_______,for some reason ,had withdrawn from all humanA,which B,who C,where D,whom