What can the duck do in the river?好像错了解析：The duck can swim in the river.(对swim 提问）The duck can swim in the river.意思是：这只鸭子在河里会游泳。swim是游泳，动词，作谓语，对谓语动词提问，只能是what什么，can能、能够，情态动词，帮助句子形成情态、能愿。 in the river在河里，介词短语，表示地点看看，你还什么不清楚，请继续追问。祝你学习进步。Alice likes reading books at school.(改否定句）谢谢您！解析：Alice likes reading books at school.(改否定句）爱丽丝喜欢在学校里看书。爱丽丝是第三人称单数，动词like加s，表示助动词是does，does的否定形式是doesn't Alice doesn'tlike reading books at school.爱丽丝不喜欢在学校里看书。Can thoseboys jump and run ?(改肯定句）谢谢！解析：Can thoseboys jump and run ?(改肯定句）那些男孩会跳和跑步吗？ Thoseboys can jump and run.那些男孩会跳和跑步。就把情态动词can放到，实意动词 jump and run的前面，然后句首大写。谢谢您，晚安！Good night！晚安！l like playing basketball.(改成否定句）l like playing basketball.(改否定句）？l like playing basketball.(改成否定句）l like playing basketball.(改成否定句）