为一段英文文本进行拼写检查和语法纠正。
“Tomorow is Saterday and I'm plannning on goinng to the park with my freinds. We will bring frisbee and have a picnick on the graas.”
"Tomorrow is Saturday, and I'm planning on going to the park with my friends. We will bring a frisbee and have a picnic on the grass."