这句英文中：It's been a great pleasure showing you the singhts of Beijing.为什么是Showing,而不是"to show"or" to showing"?

这句英文中：It's been a great pleasure showing you the singhts of Beijing.为什么是Showing,而不是to showor to showing? 晚秋最后一句说的什么呀~求英文原话呀~知道了，it's been a long time~ It's been a while It's been a long it's been a long i'm still alive must have been a miracle,it's been a hell of ride Destinati 求歌名求歌名乐队 这是第一句 It`s been a pleasure to talk to you.中 It`s 是It has 还是It is? 此句中been是什么意思,省去意思有什么不同?Thanks for your help; it's been very valuable What's it feel like to be a 我想知道这句英文的意思. 找一首英文歌 第一句是it s been a long long time It'S Been A While 歌词 it's been a good life It'S Been A Year 歌词 一个英文句子解释it's really been a while,try again.这里为什么要用been.为什么不用it only take a while. 这句英文oh,its too hard!”是什么意思? 英文中 It's OK. 找一英文歌,歌词里反复出现这句,it's been a long time a day;女声,唱到long time 的时候,是拉长了音 It's always been up to you,这句的意思?