the upstairs
通常带定冠词the。
The upstairs is much cooler than the ground floor.
楼上比底层凉快得多。
上层楼。；楼层
the upper storey of a building; the part of a building above the ground floor
上层楼。
An upper storey.
楼上
the part of a building above the ground floor
The upstairs of the old house was converted into a studio.
那栋老房子的楼上被改造成了一间工作室。
用法提示：upstairs 在这里是名词，指建筑物上层空间。
AI contextual example
We spent the whole morning cleaning the upstairs.
我们花了整个上午打扫楼上。
用法提示：the upstairs 作名词，作 cleaning 的宾语，表示楼上部分。
AI contextual example
The upstairs is much cooler than the ground floor.
楼上比底层凉快得多。
用法提示：upstairs 作名词作主语，指楼上楼层。
AI contextual example
通常带定冠词the。
The upstairs is much cooler than the ground floor.
楼上比底层凉快得多。
All the bedrooms are in the upstairs.
所有卧室都在楼上。
表示某建筑物的楼上部分。
The upstairs of the building was renovated last year.
这栋建筑的楼上部分去年翻修了。
可以直接替换'upstairs'表示楼上，但更强调具体的楼层。
较正式，常用于描述建筑的层数。
强调位置关系，常作定语或表语。
grammar · medium
易错句子I went to upstairs to get my book.
正确表达I went to the upstairs to get my book.
作为名词时，'upstairs'前需要加冠词'the'，表示'楼上部分'。错误句子中缺少冠词，结构不完整。
grammar · medium
易错句子The cat is on upstairs.
正确表达The cat is upstairs.
'upstairs'作名词时不能直接用在介词'on'后表示地点；应直接用副词'upstairs'表示'在楼上'，或使用'the upstairs'但需搭配适当介词如'in'。当前错误是混淆了名词和副词的用法。
作为名词，指建筑物的楼下部分，与'楼上'相对
downstairs指楼下部分，upstairs指楼上部分，两者位置相反。
stairs指连接楼层的楼梯本身，而upstairs指楼上整个区域。
楼上
The upstairs has three bedrooms.
楼上有三间卧室。
楼上的邻居
Our upstairs neighbors are very noisy.
我们楼上的邻居很吵。
楼上的窗户
She looked out the upstairs window.
她从楼上的窗户向外看。
从楼上
I heard a loud noise from upstairs.
我听到从楼上传来一声巨响。
down + stairs
stair（词根）
stair + case
stair + way
stair + well
上帝；老天爷
He's praying to the man upstairs for a miracle.
他正在向上帝祈祷奇迹。
脑子不灵光；愚蠢
He tried to pay for a $5 coffee with a $100 bill; nobody's home upstairs.
他试图用100美元付5美元的咖啡钱，脑子有问题。
楼上，楼下
The upstairs of the house was beautifully decorated.
房子的楼上装饰得很漂亮。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.