一般现在时：Bob usually goes to school at 7:30. 一般将来时：Bob will/is going to go to school at 7:30.一般过去时：Bon went to school at 7:30. 不知道您要求的是什么时态，我把最常见的三种都表达出来了，您自己根据时态选择句子吧。
Bobby goes to school at seven thirty.
