1.Scientists have already made robots walk and dance.（变为否定句）

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• 1.Scientists have already made robots walk and dance.（变为否定句）Scientists ______ _____ robots walk and dance ______.2.There are many famous predictions.The predictions never came true.(合并为一句）There are many famous predictions _______ never ______ ______.谢谢——痛哭流涕——鞠躬
• Scientists have already made robots to walk and dance 改错
• Japanese companies have already made robots walk and dance.中为什么有个have?是什么时态,
• Some scientists have already made robots walk and dance.为什么要用 walk and dance?
• Japanses companies have already made robots walk and dance . This kind of robot will also be fun to（接上）watch.问题1：前一句说：日本公司已经制造出这类机器人了,那为什么在后一句中,又要用“will"将来时态呢?问题2：robot为什么不用复数,这类机器人 应该有许多个的啦,就应该要用复数形式啊?
• Japanese companies have already made robots walk and dance.中为什么有个have?是什么时态,
• Some scientists have already made robots walk and dance.为什么要用 walk and dance?
• Japanses companies have already made robots walk and dance . This kind of robot will also be fun to
• 1.Scientists have already made robots walk and dance.（变为否定句）
• 英语翻译2.Japanese companies have already made robots walk and dance3.he thinks that it will be difficult for a robot to do the same things as a person4.they think that robots will be able to talk to people in 25 to 50 years5.for example,there are already robots working in factories亲.
• 三个共点力,它们的大小分别为5N 20N 23N 它们的合力的最大值和最小值分别是多少
• 客车和货车同时从甲乙两地相对开出,客车每小时行54千米,货车每小时行48千米.两车相遇后又以原速继续前进,客车到达乙地后立即返回,货车到达甲地后也立即返回,两车在距中点37.8千米处第三次相遇.求甲乙两地距离?