There is going to be a sports meetThere is going to be a sports meet next weekend.为什么句子要用be going to be 而不用be going to have?

There is going to be She is going to be there. There is going to be ___this afternoon. 求问There is going to be There is going to be there will be there is going to be discussions this afternoon为什么不是there are going to be there is going to be和there is going to have的区别 there be、there will be、there is going to be与have区别 There is going to there is going to be和there is going have的区别 There _____a music festival in our school tomorrow.A、will be going to B、is going to be C、is going to D、will be going to be be going to be与be going to do的区别there a partya is going to be b is going to have ( )there ( )a new film tomorrow?Yes,there is.A.ls;going to have B:Is;going to be C:Are; going to have D:Are; going to be 造句：There is going to be+名单+地点+将来时 There is going to be a football match next week there is going to be +raining?rain?rainy? Is there going to be a film this evenign?翻译 storm is be going to a there 连词成句