Warn of
大学 College警告…,有…危险
🧩 词语组成解析
warn
[wɔrn]
vt. 警告，告诫;通知;预告;
vi. 发出警告;
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
The weather during our holiday was perfect.
我们度假时天气好极了。
Look before you leap.
慎思而后行。
The shortest answer is doing.
最简短的回答是干。