the downstairs + singular verb
作名词时通常与定冠词 the 连用，指房子的底层，谓语动词用单数。
The downstairs is bright and has a big kitchen.
楼下很明亮，还有一个大厨房。
房子的底层,有时在地面以下
房子的底层,有时在地面以下
The lower floor of a house, at ground level, or sometimes below.
The downstairs is much cooler than the upstairs in summer.
夏天楼下比楼上凉快得多。
用法提示：此句中downstairs作名词，指房屋的底层（楼下）。
We need to clean the downstairs before the guests arrive.
客人到达之前，我们需要打扫楼下。
用法提示：此句中downstairs作名词，表示房屋底层这一空间。
The downstairs was flooded after the heavy rain.
大雨过后，楼下被水淹了。
用法提示：此句中downstairs作名词，用作主语，指房屋底层。
作名词时通常与定冠词 the 连用，指房子的底层，谓语动词用单数。
The downstairs is bright and has a big kitchen.
楼下很明亮，还有一个大厨房。
用 of 引出所属的建筑，表示某栋房子或建筑的底层部分。
The downstairs of the house is rented out to a shop.
这栋房子的底层租给了一家商店。
常与 the upstairs 对举使用，用来对比楼上和楼下。
The upstairs is carpeted, but the downstairs is tiled.
楼上铺着地毯，而楼下铺着瓷砖。
grammar · medium
易错句子Let's meet at downstairs at six.
正确表达Let's meet downstairs at six.
此处 downstairs 作副词，表示“在/到楼下”，本身已含“在……地方”的意思，前面不能再加介词 at；汉语“在楼下”的“在”不能直译出来。删去 at 即可。
grammar · medium
易错句子The downstairs are being painted this week.
正确表达The downstairs is being painted this week.
downstairs 作名词时指房子的“底层、楼下”这整个空间，是单数概念，作主语时谓语要用单数 is；汉语名词没有单复数一致的要求，所以容易误用复数 are。
楼下的卧室
They turned the downstairs bedroom into a home office.
他们把楼下的卧室改成了家庭办公室。
楼下的浴室
The downstairs bathroom is right next to the kitchen.
楼下的浴室就在厨房旁边。
楼下的卫生间
There's a small downstairs toilet near the front door.
前门附近有一个小小的楼下卫生间。
楼下的厨房
The downstairs kitchen opens onto the garden.
楼下的厨房通向花园。
楼下（整层）
The downstairs is bright and open, while all the bedrooms are upstairs.
楼下明亮宽敞，而所有卧室都在楼上。
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