Three.ducks.are.swimming.什么意思

Three.ducks.are.swimming.什么意思 the ducks are [swimming] 对括号部分提问 in,swimming,the,are,pond,ducks,the.连词成句 Some ducks are swimming in the pond对some ducks进行划线部分提问 There are many ducks are swimming in the lake.纠错解析. Three boys are swimming.这句错在哪里? Those ducks are (swimming) in the river.对括号部分提问 是The ducks are swimming on the river 还是in the river?是There a The ducks are swimming in the lake.对in the lake提问 there is a small river ____ the hill.Six ducks are swimming The ducks are swimming in the river.为什么用介词in,而不用on goes swimming什么意思