come upstairs能不能换为go upstairs句子是这样旳Why not come upstairs and have a look

come upstairs能不能换为go upstairs句子是这样旳Why not come upstairs and have a look ,go upstairs come/run/go/rush upstairs有什么区别 四个短语的区别come upstairs ,go upstairs ,come gownsyairs ,go downstares的区别.（越详细越好） Come upstairs and see it.这里为什么不能把and替换为to? Let's go upstairs 为什么这里的upstairs 是形容词 上楼 下楼 英语怎么说 用go 还是come新概念第一册中 第13课和第119课 中分别提到上楼（come upstairs）和下楼（come downstairs）可是上楼下楼不明明是go upstairs和go downstairs 有区别吗,到底用go 还是co come upstairs and see it 与come upstairs to see it 那句对 come upstairs and see me为什么不能用come upstairs to see it Come upstairs to finish your homework.为什么要改Come upstairs and finish your homework. 为什么是go upstairs 中间为什么无to 不是只有 there 和 home 没有to的吗?急用呢、 come upstairs and see it的反意疑问句 Hi guys upstairs,I just come to say Hi~ Come upstairs to finish your homework.改病句 come upstairs to finish your homgwork.改错快 动词后面跟的一定是动词么,go upstairs中的upstairs是什么词? come upstairs and see it 为什么用and 不用to可是书上说不能用 come upstairs to see it ... go ,come