为什么一般现在时里There's going to be a film tonight.这里有个be 是为什么

为什么一般现在时里There's going to be a film tonight.这里有个be 是为什么 There is going to be an American film tonight中的American为什么是主 There's going to ___a film tonight.A.is B.are C.has D.be there is going to be an （American film ）tonight.括号里的什麼成分 There is going to be a new English film on TV to night.一般现在时 There is going to be a film on TV tonight怎样变反意疑问句 There ________(be） a film tonight There is going to be an American film tonight.中的There is goi -- What's on tonight?-- I hear there is going to be a pop so There is going to be an American film tonight.求 这个句子的成分分析. There's going to ___a film to night.A.is B.are C.be D.has There is going to be a meeting next Friday.为什么是be?