1
on the rooftop
rooftop 常指（通常是平坦的）屋顶，搭配 on 表示在屋顶上。
We had dinner on the rooftop.
我们在屋顶上吃了晚餐。
屋顶
rooftops — plural of rooftop
先理解核心含义，再看它在真实句子里的用法。
屋顶
the top of a roof, typically flat
We had dinner on the rooftop.
我们在屋顶上吃了晚餐。
屋顶的顶层；覆盖或构成屋顶的材料。
The top layer of a roof; the material covering or composing a roof.
(通常是平的)屋顶顶部
the top of a (usually flat) roof
We sat on the rooftop and watched the sunset.
我们坐在屋顶上看日落。
The hotel has a beautiful rooftop garden for its guests.
这家酒店为客人设有一个漂亮的屋顶花园。
From the rooftop, you can see the whole city.
从屋顶上，你可以看到整座城市。
rooftop 常指（通常是平坦的）屋顶，搭配 on 表示在屋顶上。
We had dinner on the rooftop.
我们在屋顶上吃了晚餐。
from the rooftop 表示从屋顶这个位置向外看或呼喊。
They watched the fireworks from the rooftop.
他们从屋顶观看烟花。
rooftop 可直接放在名词前作定语，如 rooftop garden（屋顶花园）。
The hotel has a rooftop garden.
这家酒店有一个屋顶花园。
Not this
They sat on rooftop and watched the sunset.
Use this
They sat on the rooftop and watched the sunset.
The countable singular noun 'rooftop' needs a determiner such as 'the' when referring to a specific rooftop; Chinese's '在屋顶上' does not use an article, so learners often drop it in English.
Not this
The restaurant is at the rooftop of the hotel.
Use this
The restaurant is on the rooftop of the hotel.
Use 'on' to show that something is on the surface of the rooftop; 'at' would indicate a point or place but not contact with the surface.
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
屋顶酒吧
We watched the sunset from a rooftop bar.
我们在屋顶酒吧看日落。
屋顶露台
The hotel has a rooftop terrace with great views.
这家酒店有一个视野极佳的屋顶露台。
屋顶花园
They grow vegetables in a rooftop garden.
他们在屋顶花园里种蔬菜。
屋顶通道
Rooftop access is restricted for safety reasons.
出于安全原因，屋顶通道受到限制。
屋顶视野
The café is known for its rooftop view.
这家咖啡馆以屋顶视野著称。
屋顶用餐
Rooftop dining is popular in summer.
夏季屋顶用餐很受欢迎。
公开宣布；到处宣扬
When she heard the news, she wanted to shout from the rooftops.
听到这个消息时，她想让所有人都知道。
我站在屋顶的边缘，看着眼前的风景。
The rooftop offers a panoramic view of the entire city.
屋顶可以欣赏到整个城市的全景。
发长 /uː/ 音 (如 food, boot)
Use rooftops naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 roof（屋顶）和 top（顶端）拼在一起记：站在屋顶最高处就是 rooftop。
语域：neutral 常见场景：日常对话、建筑描述 rooftop 在日常和一般书面语中都常用，多用于描述建筑物顶部；口语中也很自然。
roof 的 oo 发 /u/，注意 hoof 常读 /hʊf/，oo 读音不同。top、stop、drop、flop、mop 的 -op 都读 /ɑp/，与 rooftop 的第二音节押韵；不要把 -op 读成 rope /roʊp/ 的 -ope。
Dictionary facts from ECDICT, WIKTIONARY.
Watch the sound change