谁能说说havebeenfor的意思啊?Themostcommonuseoftelecommunicationsatellites,however,hasbeenfortransmittingtelephonecalls.然而,通讯卫星最普遍的用途是用来传送电话.

Question

谁能说说have been for的意思啊?
The most common use of telecommunication satellites,however,has been for transmitting telephone calls.然而,通讯卫星最普遍的用途是用来传送电话.

Answer 1

has been for不是个固定短语 你的句子中的for是个介词表示对象 use...for...用.来做.如use a pen for writing 用笔来写字
has been 是现在完成时 表示从过去某时间开始一直延续到现在的动作或情况 也就是说表是的是通讯卫星从过去某个时间一直到现在都是被用来.你的翻译中省略了
如 she has been reading for two hours.她读了两个小时的书了./ 这两个小时她一直在读书
解释成这样应该明白了吧