请问两个英文句子的区别

问题描述:

请问两个英文句子的区别
The application is to be heard before the High Court on Friday,16 August.
The application is heard before the High Court on Friday,16 August.

第一个将来时.第二个过去时.
申请将在Friday,16 August被高院审理

申请已在Friday,16 August被高院审理
为什么将来 没有用be +going +to将来时多了去了。。be to do就是个。。