Darling ,it must be terrible to be grown up .句中为什么to be ,to be ,有什么作用

Darling ,it must be terrible to be grown up .句中为什么to be ,to be ,有什么作用 ‘Darling,it must be terrible to be grown up '请问：grown up前面为什么有个be, Darling .I am very happy to be your wife .I think it must be a good thing . 新概念英语第二册第17课 Darling,it must be terrible to be grown up问中to be grown up 为什么grown加 If anyone ever asks her how old she is ,she always answers,‘Darling,it must be terrible to begrown up '为什么没有使用主将从现 It Must Be?歌词 it must be if anyone ever asks her how old she is,she always answers,Darling,it must be terrible to be grown up!这里的ever是强调什么的呢 如果去掉ever不可以吗? be my darling It Must Be Love 歌词 It must be some catch. It must be him 歌词 it must be _____(interest) it must be rainy( )( )(随后) it must be imagination 歌词 It must be very happy. It must be something like it. 新概念英语第二册第17课一个疑问最后一句,If anyone ever asks her how old she is,she always answers,Darling,it must be terrilbe to be grown up!”为什么是to be grown up而不是to grow up