be going to

例句：

1. 1.I am going to the park tomorrow.
   我明天要去公园。
2. 2. She is going to study hard for her exams.
   她准备努力学习她的考试。
3. 3. We are going to have a picnic in the park this weekend.
   这个周末我们计划在公园野餐。