【she is next door】为什么是she is?

【she is next door】为什么是she is? she is next door. She's next door 这里的she's 是不是she is?She is next door? she is next door 为什么不加in she is next door.此处next door she is next door 这里next door 是做什么词性 she is my next－door neighbour she is my next door 语法都对吧 she is the girl who lives next door先行词是哪个 she lives next door. she is leaving____shanghai next week 直接引语变间接：“who lives next door?”she asked. "where is the airpo Our next door n____ is an old lady ,she keeps a little dog .