There have been great changes in our country since 1990...有几个疑问：为什么 There 后面是 have 而不是has 还有为什么是great changes 而不是单数?我要的是为什么.

have been there 中文翻译 have been there have been there 还是 have been to there Have you been in there?写成Have you been there? i have always been there i have never been there They have a____ been there There have been 一般疑问句 have you brother been there? 小学阅读英语习题7道.An exciting trip激动人心的旅行 I have just received a letter from my brother,Tim.He is in Australia.He has been there for six months.Tim is an engineer.He is working for a big firm and he has already visited a grea I have been there,have been 是have been in还是have been to的缩写? there have been great changes为什么用have been have been there =have been in there?have been和have been in 有什么区别呢? have been there与 have gone there的区别 have been there 和 have lived there 有啥区别? there has/have been的用法 “have been there ”and “have been in there”have been there 和 have been in there这两者的区别是什么 Have you been to there 哪里错 He is said to have been there