请问句子Is there a boy here 中的there 可以省略吗?为什么

请问句子Is there a boy here 中的there 可以省略吗?为什么 is there a library near here?yes .there is .为什么there是主语吗?可以用 there is a boy standing on the tree 可以改成there is a boy to st Is there a passport here?最后为什么要加here? There is a hotel 可以改为：Here is a hotel there is a boy play basketball outside. 这个句子为什么错了? 可以说There is a pen here吗 在全解上看见这么一句“There is a new bed here.”there be句型里可以用here吗? Here is a photo in my house.请问为什么不用 there? Is there a supermarket are here?中的are为什么错了?跪求错误原因. Is there a bank near here这句话为什么没错,here不是副词吗? 请问Is there a lake here?作否定回答,