🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
If you're under twenty-one years of age ...
如果你还不到二十一岁……
Much water runs by the mill that the miller knows not of.
当前发生诸种事，大多为人所不知。
I live in a tall building in the middle of the city.What about you?
我住在这个城市中心的一幢高楼里。你呢？