您要查找的是不是：
- The children were playing about in the backyard. 孩子们在后院玩耍。
- The children are playing about in the yard. 孩子们正在院子里玩耍。
- The children are playing on the swings in the park. 孩子们在公园里荡秋千。
- The children are playing with a toy train. 孩子们正在玩一列玩具火车。
- The children are playing on the hillock. 孩子们正在小土堆上玩。
- The children are playing marbles. 孩子们在玩弹子游戏。
- The children are playing about. 孩子们正玩耍。
- The children were playing in the sand pit. 孩子们在沙坑中玩耍。
- The children are playing at catching a spy. 孩子们在玩抓特务的游戏。
- The children were playing at keeping shop. 孩子们假装开商店玩儿。
- The children are playing card in the living room. 孩子们在客厅玩扑克牌。
- The children are playing cheerfully in the garden. 孩子们在花园里愉快地玩着。
- The children are playing blind man's buff. 孩子们正在玩捉迷藏。
- The children are playing on the mound. 孩子们正在小土墩上玩。
- The children are playing a march. 孩子们正在演奏一首进行曲。
- The children are playing beneath the window. 孩子们正在窗下玩。
- The children are playing downstairs. 孩子们在楼下玩耍。
- The children are playing in a tent. 孩子们在帐蓬里玩。
- The children are playing in the sunlight. 孩子们正在阳光下玩。
- The children are playing on the sands. 孩子们在沙地上玩。
