there have been many great inventions 为什么用have

there have been many great inventions 为什么用have There have been many great inventions,things that changed th There have been many great inventions, things that changed t 谁能帮我找到'文章开头为there have been many great inventions,things tha There have been many great inventions that change the way we 一篇英语阅读题There have been many great inventions,things that cha there have been great changes为什么用have been 以There are many inventions that have causde great changes in There have been many changes in this place.这句中为什么用have?主语是什么 There have been many changes in this place. 这句中为什么用have?主语是什 There have been many great changes in our city____（最近几年） Many inventions have made our life ____