早晨8:00骑车去叔叔的农场,8:30到达.上午参观农场,干农活.中午野餐.下午画画,钓鱼.下午4：30准备回家 （如何用过去式翻译呢?）

I rode my bike to my uncle's farm at 8 am, arrived at 8:30 am. I visited the farm and did farm work in the morning, drew pictures and went fishing in the afternoon.I was about to go home at 4:30 pm.