This Sunday evening ,my family and I decide to go out for dinner,for my little sister had won the first prize in the English competition.We eat Chinese food in the restaurant.We laugh and sing on the way home.All of us had a great time.翻译成中文这个星期天的晚上，我和我的家人决定外出就餐，因为我的姐姐在英语比赛中获得了第一名，我们在一家中国饭店吃饭，在回家的路上我们聊天、唱歌，所有人都度过了快乐的时光。补充一下for my little sister had won 里面把had改为have，时态我弄错了