Last weekend . In the morning, I went out play with my grandparents! We came to the park, where the air was good, there were many beautiful flowers and trees. There were many elderly people in the exercise, my grandparents were doing the exercise, this is a good place. In the afternoon, I went to the Boulder Dam, I took many photos, I met one of my classmates and his parents, this is a happy Sunday, I am very happy.
帮你改过了,只是文中好像有一些语法错误