为什么不能说welcome to here

为什么不能说welcome to here "welcome here" of "welcome to here"? welcome to here 还是welcome here Welcome back to here 为什么welcome back to school前面有to,而welcome back home不能加to?schoo You are welcome to stay here.welcome为什么不加d,变成被动啊? welcome to be here 还是welcome to here welcome to there还是here welcome to here哪里错 welcome to为什么后面要加to You are welcome to b( ) your brother here. Welcome to Dongwei Restaurant.Here's the m________.