欣欣向上，
on the ground比较常用吧？举2个例子：He dropped the nails on the ground and successive clangs were heard. 他把钉子掉到了地上，听见了一连串的叮当声。 They put some wreathes on the ground. 他们把一些花环放在地上。
月野小兔纸
in the ground 是指掩埋者的， the potatoes are in the ground. (土豆在地里（埋着））on the ground 是在地面上，the potatoes are on the ground 土豆在地（面）上
