关于downtown的用法

downtown
1.n.市中心区；市中心
例句： Ardastra Gardens,a short taxi ride from downtown

2.downtown用作副词的意思是“在商业〔闹市〕区”,还可表示“往商业〔闹市〕区”。作“在商业〔闹市〕区”解时,一般与静态动词(如live)连用; 作“往商业〔闹市〕区”解时,往往与动态动词(如come, go, move等)连用,表示运动的方向。
downtown无比较级和最高级。
例句：You have to be downtown in a hurry.
3.downtown有时也可用作形容词,意为“商业〔闹市〕区的”。
例如:They are delinquents roaming the downtown streets.
他们是在闹市区闲逛的不良分子。
I live in downtown New York.我住在纽约的闹市区。

downtown通常做形容词或副词，但是在美语里也有名词词性。
可以说go downtown或者go to downtown
go downtown里，downtown做副词
go to downtown里，downtown做名词

可以的吧,我美国朋友来的时候,就说go to downtown的,去市中心啊~~怎么不可以了?!?!

downtown=the center of the city, where the neighbourhood looks like a lively city place. So it is a noun.

I am 100% sure it is a noun.

I searched the "downtown of Philadelphia", and here is the result: Local results for downtown of near Philadelphia, PA