为什么water the flowers中的flowers要加s

为什么water the flowers中的flowers要加s The flowers need_(water)now.water怎么变?为什么? water the flowers还是 water flowers water the flowers英语 water the flowers的意思 The teacher said she--- (water)the flowers your sister can the water the flowers? 种花grow flowers和浇花water the flower为什么前者无the后者有? the flowers need_____(water)every day. water the flowers的过去式是什么?同上 The flowers must ________(water)every day. They___(not water)the flowers last Tuesday your,flowers,can,the,water,sister your,flowers,can,the,water,sister?中文 they ___(water) the flowers tomorrow I enjoyed the flowers I _______ 该填water、watering还是watered?为什么? jim is often made to water the flowers 为什么用被动语态? 浇花过去式浇花water the flowers动词water的过去式